Energy Conservation Program: Test Procedures for Residential Clothes Washers, 13888-13950 [2012-4819]
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Federal Register / Vol. 77, No. 45 / Wednesday, March 7, 2012 / Rules and Regulations
DEPARTMENT OF ENERGY
10 CFR Parts 429 and 430
[Docket No. EERE–2010–BT–TP–0021]
RIN 1904–AC08
Energy Conservation Program: Test
Procedures for Residential Clothes
Washers
Office of Energy Efficiency and
Renewable Energy, Department of
Energy.
ACTION: Final rule.
AGENCY:
The U.S. Department of
Energy (DOE) establishes new test
procedures for residential clothes
washers under the Energy Policy and
Conservation Act. The new test
procedures include provisions for
measuring standby mode and off mode
energy consumption, and update the
provisions for measuring active mode
energy and water consumption. This
final rule also amends the certification,
compliance, and enforcement
requirements for residential clothes
washers, amends provisions for
calculating the estimated annual
operating cost for clothes washers,
eliminates an obsolete clothes washer
test procedure, and amends certain
provisions in the currently applicable
test procedure.
DATES: This final rule is effective April
6, 2012. Manufacturers will be required
to certify compliance using the
appendix J2 test procedure beginning on
the compliance date of any final rule
establishing amended energy
conservation standards that address
standby and off mode power for
residential clothes washers. Before that
time, manufacturers may continue to
certify compliance using the test
procedure at appendix J1.
The incorporation by reference of
certain publications listed in this
rulemaking is approved by the Director
of the Office of the Federal Register as
of April 6, 2012.
ADDRESSES: The docket is available for
review at https://www.regulations.gov,
including Federal Register notices,
framework documents, public meeting
attendee lists and transcripts,
comments, and other supporting
documents/materials. All documents in
the docket are listed in the
regulations.gov index. However, not all
documents listed in the index may be
publicly available, such as information
that is exempt from public disclosure. A
link to the docket Web page can be
found at: www.regulations.gov/
#!docketDetail;D=EERE-2010-BT-TP0021. The regulations.gov Web page
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SUMMARY:
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contains instructions on how to access
all documents, including public
comments, in the docket.
For further information on how to
review the docket, contact Ms. Brenda
Edwards at (202) 586–2945 or by email:
Brenda.Edwards@ee.doe.gov.
FOR FURTHER INFORMATION CONTACT:
Mr. Stephen L. Witkowski, U.S.
Department of Energy, Office of
Energy Efficiency and Renewable
Energy, Building Technologies
Program, EE–2J, 1000 Independence
Avenue SW., Washington, DC 20585–
0121. Telephone: (202) 586–7463.
Email:
Stephen.Witkowski@ee.doe.gov.
Ms. Elizabeth Kohl, U.S. Department of
Energy, Office of the General Counsel,
GC–71, 1000 Independence Avenue
SW., Washington, DC 20585–0121.
Telephone: (202) 586–7796. Email:
Elizabeth.Kohl@hq.doe.gov.
SUPPLEMENTARY INFORMATION: This final
rule incorporates by reference into part
430 the following industry test
standards:
(1) AATCC Test Method 79–2010,
Absorbency of Textiles, Revised 2010.
(2) AATCC Test Method 118–2007,
Oil Repellency: Hydrocarbon Resistance
Test, Revised 2007.
(3) AATCC Test Method 135–2010,
Dimensional Changes of Fabrics After
Home Laundering, Revised 2010.
(4) IEC Standard 62301, Household
Electrical Appliances—Measurement of
Standby Power, Edition 2.0, 2011–01.
Copies of AATCC standards can be
obtained from the American Association
of Textile Chemists and Colorists, P.O.
Box 12215, Research Triangle Park, NC
27709, (919) 549–3526, or
www.aatcc.org.
Copies of IEC standards can be
obtained from the American National
Standards Institute, 25 W. 43rd Street,
4th Floor, New York, NY 10036, (212)
642–4900, or https://webstore.ansi.org/.
Table of Contents
I. Authority and Background
A. General Test Procedure Rulemaking
Process
B. DOE Test Procedure at Appendix J1
C. Clothes Washer Test Procedure Updates:
Authority and Regulatory Background
II. Summary of the Final Rule
A. Standby and Off Mode
B. Water Consumption
C. Updated Consumer Usage Patterns
D. Energy Test Cycle Definition
E. Capacity Measurement Method
F. Test Cloth, Detergent, and
Preconditioning Test Equipment
G. Testing Conditions
H. Clarifications and Corrections
I. Annual Operating Cost Calculation
J. Revisions to Appendix J1
K. Removal of Appendix J
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L. Certification, Compliance, and
Enforcement Requirements
III. Discussion
A. Products Covered by This Test
Procedure Final Rule
B. Standby Mode and Off Mode Test
Procedure Provisions
1. Version of IEC Standard 62301
2. Determination of Modes To Be
Incorporated
a. Active Mode
b. Delay Start Mode
c. Cycle Finished Mode
d. Self-Clean Mode
e. Standby Mode
f. Off Mode
g. Network Mode
h. Disconnected Mode
3. Power Stabilization Criteria and
Measurement Methods
a. Stable, Non-Cyclic Power
b. Unstable (Varying), Non-Cyclic Power
c. Cyclic Power
4. Use of Default Settings
5. Test Room Ambient Temperature
Conditions for Standby Power Testing
6. Power Supply and Power Measuring
Instruments
7. Calculation of Energy Consumption in
Each Mode
8. Integrated Modified Energy Factor
(IMEF)
C. Active Mode Test Procedure Provisions
1. Integrated Water Consumption Factor
(IWF)
2. Technologies Not Covered by the
Current Test Procedure
a. Steam Wash Cycles
b. Self-Clean Cycles
c. Adaptive Control Technologies
d. Demand Response Technologies
3. Consumer Usage Patterns
a. Number of Annual Wash Cycles
b. Test Load Size Specifications
c. Load Usage Factors
d. Temperature Use Factors
e. Dryer Usage Factor
f. Load Adjustment Factor
4. Energy Test Cycle Definition
a. Part (A) of the Proposed Definition
b. Part (B) of the Proposed Definition
c. Part (C) of the Proposed Definition
d. Part (D) and Part (E) of the Proposed
Definition
e. New Section 2.13
f. Reporting Requirements
5. Capacity Measurement Method
6. Test Cloth, Detergent, and
Preconditioning Test Equipment
a. Test Cloth Definitions
b. Energy Test Cloth Size and Weight
Tolerances
c. Detergent Specification and Dosage
d. Test Cloth Preconditioning Wash
Requirements
e. AATCC Test Methods
f. Required Extractor Tests
g. Extractor Specification
h. Bone Dryer Specifications
i. Procedures for Preparing and Handling
Test Cloth Bundles
j. Clarification of the RMC Nomenclature
and Application of the RMC Correction
Curve
k. Removal of Redundant Sections
7. Testing Conditions
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a. Water Supply Pressure
b. Water Inlet and Drain Hoses
8. Clarifications and Corrections
a. Correction of Cold Rinse Definition
b. Clarification of Wash Time Setting for
Electromechanical Dials
c. Clarification of Cold Wash Definition
d. Removal of Obsolete Note in Water
Factor Calculation Section
e. Correction of Typographical Error in Hot
Water Consumption Calculation
f. Removal of Energy Factor Calculation
g. Clarification of Waiver Field Test
Equation
h. Clarification of Water Factor
Terminology
9. Test Procedure Performance
Specifications
D. Annual Operating Cost Calculation
E. Revisions to Appendix J1
1. Revision of Introductory Text
2. Correction of Typographical Errors in
Materials Incorporated by Reference
3. Correction of Cold Rinse Definition
4. Removal of Redundant Sections
5. Detergent Specification and Dosage
6. Wash Time Setting for
Electromechanical Dials
7. Clarification of Cold Wash Definition
8. Removal of Obsolete Note in Water
Factor Calculation Section
9. Clarification of Water Factor
Terminology
10. Correction of Typographical Error in
Hot Water Consumption Calculation
11. Extension of Test Load Size Table
12. Clarification of Waiver Field Test
Equation
13. Corrections to Provisions for
Calculating the RMC Correction Curve
F. Removal of Obsolete Test Procedure at
Appendix J
G. Compliance With Other EPCA
Requirements
1. Test Burden
2. Integration of Standby Mode and Off
Mode Energy Consumption Into the
Energy Efficiency Metrics
3. Impacts on Commercial Clothes Washers
4. Certification, Compliance, and
Enforcement Requirements
H. Impacts of the Test Procedure
Amendments on EnergyGuide and
ENERGYSTAR
IV. Procedural Issues and Regulatory Review
A. Review Under Executive Order 12866
B. Review Under the Regulatory Flexibility
Act
C. Review Under the Paperwork Reduction
Act of 1995
D. Review Under the National
Environmental Policy Act of 1969
E. Review Under Executive Order 13132
F. Review Under Executive Order 12988
G. Review Under the Unfunded Mandates
Reform Act of 1995
H. Review Under the Treasury and General
Government Appropriations Act, 1999
I. Review Under Executive Order 12630
J. Review Under Treasury and General
Government Appropriations Act, 2001
K. Review Under Executive Order 13211
L. Review Under Section 32 of the Federal
Energy Administration Act of 1974
M. Congressional Notification
N. Approval of the Office of the Secretary
I. Authority and Background
Title III of the Energy Policy and
Conservation Act (42 U.S.C. 6291, et
seq.; ‘‘EPCA’’) sets forth a variety of
provisions designed to improve energy
efficiency. (All references to EPCA refer
to the statute as amended through the
Energy Independence and Security Act
of 2007 (EISA 2007), Public Law 110–
140 (Dec. 19, 2007)). Part B of title III,
which for editorial reasons was
redesignated as Part A upon
incorporation into the U.S. Code (42
U.S.C. 6291–6309), establishes the
‘‘Energy Conservation Program for
Consumer Products Other Than
Automobiles.’’ These include residential
clothes washers, the subject of this final
rule. (42 U.S.C. 6292(a)(7))
Under EPCA, this program consists
essentially of four parts: (1) Testing, (2)
labeling, (3) Federal energy conservation
standards, and (4) certification and
enforcement procedures. The testing
requirements consist of test procedures
that manufacturers of covered products
must use as the basis for certifying to
DOE that their products comply with
the applicable energy conservation
standards adopted under EPCA, and for
making representations about the
efficiency of those products. Similarly,
DOE must use these test requirements to
determine whether the products comply
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with any relevant standards
promulgated under EPCA.
A. General Test Procedure Rulemaking
Process
Under 42 U.S.C. 6293, EPCA sets forth
the criteria and procedures DOE must
follow when prescribing or amending
test procedures for covered products.
EPCA provides that any test procedures
prescribed or amended under this
section shall be reasonably designed to
produce test results which measure
energy efficiency, energy use or
estimated annual operating cost of a
covered product during a representative
average use cycle or period of use and
shall not be unduly burdensome to
conduct. (42 U.S.C. 6293(b)(3)) If DOE
determines that a test procedure
amendment is warranted, it must
publish proposed test procedures and
offer the public an opportunity to
present oral and written comments on
them. (42 U.S.C. 6293(b)(2))
DOE is codifying these changes to the
clothes washer test procedure as a new
appendix J2 in 10 CFR part 430 subpart
B. Manufacturers will not be required to
use appendix J2 to demonstrate
compliance with clothes washer energy
conservation standards until the
compliance date of amended energy
conservation standards that consider the
methods and measurements included in
the new test procedure. Until that time,
manufacturers may continue to use
appendix J1.
EPCA requires DOE to review its test
procedures at least once every seven
years to determine whether
amendments are warranted. (42 U.S.C.
6293(b)(1)) This rulemaking satisfies
EPCA’s periodic review requirement.
Table I.1 provides a summary of prior
key regulatory and legislative actions
regarding the residential clothes washer
test procedure and energy conservation
standards, which are relevant to this
final rule. The first column contains the
abbreviated names used in this
preamble to refer to each action.
TABLE I.1—SUMMARY OF RELEVANT REGULATORY AND LEGISLATIVE ACTIONS FOR RESIDENTIAL CLOTHES WASHERS
Name
Action
Citation and date
Summary of action
TEST PROCEDURES
Final Rule ..........................
September 2010 NOPR ......
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August 1997 Final Rule .......
Notice of Proposed Rulemaking.
62 FR 45484 (August 27,
1997).
75 FR 57556 (September
21, 2010).
October 2010 public meeting.
August 2011 SNOPR ..........
Public meeting ...................
October 28, 2010 ..............
Supplementary Notice of
Proposed Rulemaking.
76 FR 49238 (August 9,
2011).
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Established new test procedure at appendix J1.
Proposed new appendix J2 to incorporate standby and
off mode and to amend certain active mode provisions; proposed changes to appendix J1; proposed
removal of appendix J.
Public meeting to discuss proposed test procedure
amendments.
Proposed revisions to new appendix J2 to incorporate
provisions of IEC Standard 62301 (2nd Ed.); proposed minor amendments to appendix J1.
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TABLE I.1—SUMMARY OF RELEVANT REGULATORY AND LEGISLATIVE ACTIONS FOR RESIDENTIAL CLOTHES WASHERS—
Continued
Name
November 2011 SNOPR .....
Action
Citation and date
Supplementary Notice of
Proposed Rulemaking.
Summary of action
76 FR 69870 (November
9, 2011).
Proposed amended definition of the energy test cycle
for the proposed new appendix J2.
ENERGY CONSERVATION STANDARDS
January 2001 standards
Final Rule.
Final Rule ..........................
66 FR 3314 (January 12,
2001).
August 2009 standards
framework document.
September 2009 standards
public meeting.
Framework document ........
74 FR 44306 (August 28,
2009).
September 21, 2009 ..........
Public meeting ...................
Required use of appendix J1 to demonstrate compliance with amended energy conservation standards
as of January 1, 2004; amended test procedure provisions related to remaining moisture content and
test cloth.
Developed to consider amended energy conservation
standards.
Public meeting to discuss energy conservation standards rulemaking; included test procedure issues.
LEGISLATION
EPCA ...................................
Legislation .........................
EISA 2007 ...........................
Legislation .........................
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B. DOE Test Procedure at Appendix J1
The DOE test procedure for clothes
washers currently being manufactured
is found at 10 CFR part 430, subpart B,
appendix J1, which was adopted by
DOE in the August 1997 Final Rule.
DOE added the new appendix J1 so that
appendix J could still be used until DOE
amended the residential clothes washer
conservation standards 1, which DOE
published in the January 2001 standards
Final Rule. Until the compliance date of
any amended standards for residential
clothes washers, manufacturers may
continue to use the appendix J1 test
procedure to demonstrate compliance
with current energy conservation
standards.
The test procedure at appendix J1
includes provisions for determining the
modified energy factor (MEF) and water
factor (WF). The test procedure at
appendix J1 does not address energy use
in standby or off modes.
C. Clothes Washer Test Procedure
Updates: Authority and Regulatory
Background
EISA 2007 amended EPCA to require
DOE to amend its test procedures for all
covered products to integrate measures
of standby mode and off mode energy
consumption into the overall energy
efficiency, energy consumption, or other
energy descriptor, unless the current
test procedure already incorporates
standby and off mode energy
1 Because appendix J applies only to clothes
washers manufactured before January 1, 2004,
appendix J is now obsolete.
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Energy Policy and Conservation Act, Pub. L.
94–163.
Energy Independence and
Security Act of 2007,
Pub. L. 110–140.
Established authority for energy conservation standards and test procedures.
Required standby and off mode energy to be integrated into overall energy descriptors for residential
clothes washers, if technically feasible.
consumption, or if such integration is
technically infeasible. If an integrated
test procedure is technically infeasible,
DOE must prescribe a separate standby
mode and off mode energy use test
procedure for the covered product, if a
separate test is technically feasible. (42
U.S.C. 6295(gg)(2)(A)) Any such
amendment must consider the most
current versions of International
Electrotechnical Commission (IEC)
Standard 62301, ‘‘Household electrical
appliances—Measurement of standby
power’’ (‘‘IEC Standard 62301 (Second
Edition)’’ or ‘‘Second Edition’’) and IEC
Standard 62087, ‘‘Methods of
measurement for the power
consumption of audio, video, and
related equipment.’’ 2 Amendments to
test procedures to include standby and
off mode energy consumption are not
used to determine compliance with
previously-established standards. (42
U.S.C. 6295(gg)(2)(C))
DOE is considering amending
standards for clothes washers in a
separate rulemaking, including
amendments to the water consumption
standards established in EISA 2007.3 (42
U.S.C. 9295(g)(9) In the August 2009
standards framework document,
available at https://www1.eere.
energy.gov/buildings/
appliance_standards/residential/pdfs/
2 IEC standards are available online at
www.iec.ch.
3 EISA 2007 amended EPCA, in relevant part, to
revise the energy conservation standards for
residential clothes washers. The revised standards
established a maximum water consumption factor
(WF) of 9.5, effective January 1, 2011.
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clothes_washers_framework.pdf, DOE
requested comments on revising the
clothes washer test procedure. Issues
presented in the framework document,
including issues related to the test
procedure, were discussed at the
September 2009 standards public
meeting.
In response to the August 2009
standards framework document, DOE
received comments stating that it should
consider changes to the active mode test
procedure for clothes washers. As a
result, DOE proposed in the September
2010 NOPR to address issues regarding
the active mode provisions of the test
procedure, in addition to proposing the
inclusion of measures for standby and
off mode power. The proposals are
discussed in greater detail below.
DOE proposed a number of revisions
and additions to the test procedure in
the September 2010 NOPR, including:
(1) Incorporating standby and off mode
power into a combined energy metric;
(2) addressing technologies not covered
by the appendix J1 test procedure, such
as steam wash cycles and self-clean
cycles; (3) revising the number of
annual wash cycles; (4) updating use
factors; (5) revising the procedures and
specifications for test cloth; (6)
redefining the appropriate water fill
level for the capacity measurement
method; (7) establishing a new measure
of water consumption; and (8) revising
the definition of the energy test cycle.
DOE requested comment on the
proposals in the September 2010 NOPR
and discussed the proposals at the
October 2010 public meeting.
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The August 2011 SNOPR proposed to
incorporate certain provisions of IEC
Standard 62301 (Second Edition), as
well as additional amendments
addressing the following: (1) The energy
test cycle definition; (2) the load
adjustment factor; (3) the wash time
setting for certain clothes washers; (4)
the calculation of annual energy cost; (5)
extension of the test load size table; (6)
the definition of cold rinse; (7)
redundant sections for test cloth
specifications; (8) the detergent
specification; (9) the definition of cold
wash; and (10) the calculations for percycle self-clean water consumption.
DOE requested comment on the
proposals in the August 2011 SNOPR.
The November 2011 SNOPR proposed
a revised definition for the energy test
cycle. DOE requested additional
comment on its proposal.
In today’s final rule, DOE addresses
comments it received on the September
2010 NOPR that were not previously
addressed in the August 2011 SNOPR,
as well as comments received in
response to the August 2011 SNOPR
and November 2011 SNOPR. DOE
responds to these comments in section
III.
incorporates by reference IEC Standard
62301 (Second Edition). In the new test
procedure, DOE includes language to
clarify the application of clauses from
the Second Edition regarding test
conditions and test procedures for
measuring standby mode and off mode
energy consumption. The new test
procedure includes definitions of
‘‘active mode,’’ ‘‘standby mode,’’ and
‘‘off mode’’ based on the definitions
provided in the Second Edition. It also
incorporates a simplified measurement
approach that accounts for energy
consumption in all low-power modes—
including standby, off, delay start, and
cycle finished modes—by means of a
single power measurement. DOE also
adopts a new measure of energy
efficiency, the integrated modified
energy factor (IMEF), which includes
the energy used in the active, standby,
and off modes.
II. Summary of the Final Rule
In this final rule, DOE establishes a
new clothes washer test procedure (in a
new appendix J2) that integrates
measures of standby mode and off mode
energy consumption, as well as
measures of energy consumption in
certain additional modes determined to
be part of active mode. This final rule
also: (1) Introduces a new efficiency
metric for water consumption; (2) more
accurately reflects current consumer
usage patterns; (3) revises the energy
test cycle definition; (4) revises the
capacity measurement method; (5)
addresses issues related to the test cloth,
including the preconditioning detergent
and test equipment; (6) clarifies certain
testing conditions; (7) provides
additional clarifications and corrections
to certain provisions of the test
procedure; (8) revises the calculation for
annual operating cost; (9) revises and
clarifies certain provisions in appendix
J1; (10) removes the obsolete appendix
J to subpart B of 10 CFR part 430; and
(11) amends the certification,
compliance, and enforcement
requirements for residential clothes
washers. The following paragraphs
summarize these changes.
C. Updated Consumer Usage Patterns
The new test procedure updates
certain values from the existing test
procedure to reflect current consumer
usage patterns and capabilities. This
final rule: (1) Updates the number of
annual wash cycles and incorporates it
into the calculation for combined lowpower mode energy consumption; (2)
extends the test load sizes table to
accommodate test loads for largecapacity clothes washers; (3) updates
the temperature use factors for the
warm/cold and warm/warm
temperature combinations to
accommodate the warm/warm cycle as
a complete cycle; (4) updates the dryer
usage factor; and (5) replaces the current
representative load size calculation in
the drying energy equation, which is
based on the load adjustment factor,
with a weighted-average load size based
on the minimum, average, and
maximum load sizes and the load usage
factors.
A. Standby and Off Mode
The new clothes washer test
procedure includes provisions for
measuring energy consumption in
standby and off modes. DOE
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B. Water Consumption
The new test procedure establishes a
new measure of efficiency, the
integrated water consumption factor
(IWF), which incorporates the water
consumption of all wash/rinse test
cycles.
D. Energy Test Cycle Definition
The new test procedure modifies the
definition of the energy test cycle to
improve clarity, which DOE believes
will result in more accurate, repeatable,
and reproducible results within and
among all test laboratories.
E. Capacity Measurement Method
The new test procedure modifies the
capacity measurement method to
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improve clarity, repeatability, and
reproducibility, and to more
appropriately represent the usable
volume of the clothes washer during
operation.
F. Test Cloth, Detergent, and
Preconditioning Test Equipment
The new test procedure: (1) Includes
new test cloth definitions; (2)
establishes tolerances for the size and
weight of the test cloth; (3) updates the
detergent specification to reflect the
current industry-standard detergent; (4)
updates the test cloth preconditioning
wash requirements; (5) updates the
industry test methods referenced in the
test procedure to reflect the current
versions of each standard; (6) adds a
new industry test method for measuring
test cloth shrinkage; (7) adds a
requirement to conduct extractor tests at
the 650 g-force level; (8) updates the
extractor specification; (9) adds
specifications for the dryer to be used
for bone-drying the test cloth; (10)
clarifies the procedures for preparing
and handling test cloth bundles; (11)
clarifies the remaining moisture content
(RMC) nomenclature used throughout
the test procedure; (12) clarifies the
application of the RMC correction
curve; and (13) removes redundant
sections regarding test cloth
specifications and preconditioning,
which were made obsolete by the
January 2001 standards Final Rule.
G. Testing Conditions
Today’s final rule clarifies the water
supply pressure specification.
H. Clarifications and Corrections
This final rule: (1) Corrects the
definition of ‘‘cold rinse’’; (2) clarifies
the method for setting the wash time on
clothes washers with electromechanical
dials; (3) clarifies the definition of ‘‘cold
wash’’ for clothes washers that offer
multiple cold wash settings; (4) removes
an obsolete note in the water factor
calculation section; (5) corrects a
typographical error in the equation for
calculating per-cycle hot water
consumption using gas-heated or oilheated water; (6) removes the obsolete
calculation of energy factor (EF); (7)
clarifies the procedures recommended
for conducting field tests in support of
a test procedure waiver; (8) clarifies the
water factor metric terminology; and (9)
corrects typographical errors in
materials incorporated by reference.
I. Annual Operating Cost Calculation
Today’s final rule amends the annual
operating cost calculation in 10 CFR
430.23(j) to incorporate the cost of
energy consumed in standby and off
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III. Discussion
modes, and to reflect an updated
number of annual use cycles.
A. Products Covered by This Test
Procedure Final Rule
J. Revisions to Appendix J1
This final rule revises and clarifies
certain provisions in appendix J1, some
of which are identical to revisions made
in appendix J2. Manufacturers will
continue to use the amended version of
appendix J1 to certify compliance until
use of appendix J2 is required for
certification.
Specifically, this final rule: (1)
Revises the introductory text to
appendix J1; (2) corrects typographical
errors in materials incorporated by
reference; (3) corrects the definition of
‘‘cold rinse’’; (4) removes redundant
sections regarding test cloth
specifications and preconditioning,
which were made obsolete by the
January 2001 standards Final Rule; (5)
updates the test cloth preconditioning
detergent specification to reflect the
current industry-standard detergent; (6)
clarifies the method for setting the wash
time for clothes washers with
electromechanical dials; (7) clarifies the
definition of ‘‘cold wash’’ for clothes
washers that offer multiple cold wash
settings; (8) removes an obsolete note in
the water factor calculation section; (9)
corrects a typographical error in the
equation for calculating per-cycle hot
water consumption using gas-heated or
oil-heated water; (10) extends the load
size table to accommodate test loads for
large-capacity clothes washers; (11)
clarifies the procedures recommended
for conducting field tests in support of
a test procedure waiver; and (12)
corrects and clarifies provisions for
calculating the RMC correction curve.
K. Removal of Appendix J
Today’s final rule removes appendix
J to subpart B of 10 CFR part 430, which
became obsolete when appendix J1
became effective.
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L. Certification, Compliance, and
Enforcement Requirements
Today’s final rule modifies the
reporting requirements in 10 CFR
429.20(b)(2) by specifying that a
certification report shall include
publicly available information including
MEF, WF, and capacity; as well the list
of cycle settings comprising the
complete energy test cycle for each basic
model, which would not be made
publicly available as part of the report.
The requirement to provide the list of
cycle settings comprising the complete
energy test cycle will apply only to test
results obtained using appendix J2.
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Today’s final rule covers residential
clothes washers, defined as follows in
10 CFR 430.2:
Clothes washer means a consumer
product designed to clean clothes,
utilizing a water solution of soap and/
or detergent and mechanical agitation or
other movement, and must be one of the
following classes: Automatic clothes
washers, semi-automatic clothes
washers, and other clothes washers.
Automatic clothes washer means a
class of clothes washer which has a
control system which is capable of
scheduling a preselected combination of
operations, such as regulation of water
temperature, regulation of the water fill
level, and performance of wash, rinse,
drain, and spin functions without the
need for user intervention subsequent to
the initiation of machine operation.
Some models may require user
intervention to initiate these different
segments of the cycle after the machine
has begun operation, but they do not
require the user to intervene to regulate
the water temperature by adjusting the
external water faucet valves.
Semi-automatic clothes washer means
a class of clothes washer that is the
same as an automatic clothes washer
except that user intervention is required
to regulate the water temperature by
adjusting the external water faucet
valves.
Other clothes washer means a class of
clothes washer which is not an
automatic or semi-automatic clothes
washer.
Pursuant to 42 U.S.C. 6295(q),
existing energy conservation standards
divide residential clothes washers into
five product classes (10 CFR 430.32(g)):
• Top-loading, Compact (less than 1.6
cubic feet capacity)
• Top-loading, Standard (1.6 cubic feet
or greater capacity)
• Top-loading, Semiautomatic
• Front-loading
• Suds-saving
DOE received comments from
interested parties regarding clothes
washer product classes in response to
the September 2010 NOPR. BSH Home
Appliances (BSH) commented that it
supports removing the distinction
between front-loading and top-loading
clothes washers. DOE notes that the
amended test procedure contains
provisions for testing both top-loading
and front-loading clothes washers of
varying capacities. DOE is considering
the issue of how clothes washers should
be grouped into product classes in the
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separate rulemaking addressing energy
conservation standards for residential
clothes washers (Docket EERE–2008–
BT–STD–0019).
The People’s Republic of China
(China) commented that DOE did not
specifically consider non-detergent
types of clothes washers, and that DOE
should set appropriate energy efficiency
requirements for such non-detergent
machines. (China, No. 19 at p. 4) DOE
does not have any information on
residential clothes washers currently
available in the United States that use
cleaning mechanisms other than the
combination of water, detergent, and
mechanical agitation. Therefore, DOE is
not incorporating any changes to the
definitions of covered products in
today’s final rule.
B. Standby Mode and Off Mode Test
Procedure Provisions
This section describes the standby
and off mode test procedure provisions
adopted in today’s final rule. DOE
received a number of comments from
interested parties regarding the standby
and off mode definitions and test
procedure provisions in IEC Standard
62301 proposed in the September 2010
NOPR. DOE responded to many of these
comments in the August 2011 SNOPR
and addresses additional comments
from the September 2010 NOPR and the
August 2011 SNOPR in the discussion
that follows.
1. Version of IEC Standard 62301
DOE proposed in the September 2010
NOPR to incorporate by reference
certain provisions from sections 4 and 5
of IEC Standard 62301 (First Edition), as
well as certain provisions from the
Committee Draft for Vote (CDV) version
and the Final Draft International
Standard (FDIS) version, developed
prior to the issuance of the Second
Edition. DOE received numerous
comments in response to the September
2010 NOPR regarding the version of IEC
Standard 62301, and provided
responses to comments in the August
2011 SNOPR.
Based on comments from interested
parties, DOE proposed in the August
2011 SNOPR to incorporate by reference
the Second Edition of IEC Standard
62301 for measuring standby and off
mode power. Specifically, DOE
proposed referencing the following
sections in the Second Edition: (1) The
room ambient air conditions specified
in section 4, paragraph 4.2; (2) the
electrical supply voltage waveform
specified in section 4, paragraph 4.3.2;
(3) the power meter requirements
specified in section 4, paragraph 4.4; (4)
the note regarding the time required to
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enter a stable power state in section 5,
paragraph 5.1, note 1; (5) the installation
instructions in section 5, paragraph 5.2;
and (6) the power sampling method
specified in section 5, paragraph 5.3.2.
DOE received the following comments
in response to the August 2011 SNOPR:
The Association of Home Appliance
Manufacturers (AHAM), Alliance
Laundry Systems (ALS), the Northwest
Energy Efficiency Alliance (NEEA), and
Whirlpool Corporation (Whirlpool)
reiterated their support for
incorporating by reference the Second
Edition of IEC Standard 62301. AHAM
and ALS stated that the Second Edition
contains a number of important
clarifications not present in the First
Edition. Furthermore, AHAM and ALS
stated that adopting the Second Edition
will allow for international
harmonization, which will give clarity
and consistency to the regulated
community. AHAM also stated that the
Second Edition decreases testing
burden. Whirlpool stated that the
incorporation of the Second Edition
should not be applicable until the
effective date of appendix J2. (AHAM,
No. 24 at p. 2; ALS, No. 22 at p. 1;
NEEA, No. 26 at p. 2; Whirlpool, No. 27
at p. 1)
In this final rule, DOE incorporates by
reference IEC Standard 62301 (Second
Edition) for the test procedure in
appendix J2. DOE believes that the new
test procedures provide improved
accuracy and representativeness of the
resulting power measurement, and are
not unduly burdensome to conduct, as
described further in sections III.B.6 and
III.G.1.
This final rule also amends 10 CFR
430.3 by adding a reference to IEC
Standard 62301 (Second Edition). DOE
retains the reference to the First Edition
in 10 CFR 430.3 because several test
procedures for other covered products
not addressed in this final rule
incorporate provisions from the First
Edition.
Today’s final rule also corrects the
address and telephone number listed for
the American National Standards
Institute (ANSI) under the newly
designated section for IEC standards in
10 CFR 430.3(m). The current address
and phone number for ANSI is 25 W.
43rd Street, 4th Floor, New York, NY
10036, (212) 642–4900. This correction
is consistent with the address and
phone number currently listed for ANSI
in 10 CFR 430.3(c).
2. Determination of Modes To Be
Incorporated
EPCA provides mode definitions for
active mode, standby mode, and off
mode, but authorizes DOE to amend
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these mode definitions by taking into
consideration the most current version
of IEC Standard 62301. (42 U.S.C.
6295(gg)(1)(B)) In the September 2010
NOPR, DOE noted that the mode
definitions provided in IEC Standard
62301 (First Edition) and EPCA (as
amended by EISA 2007) were designed
to be broadly applicable for many
energy-using products and could be
subject to multiple interpretations.
Therefore, DOE proposed mode
definitions based on those provided in
IEC Standard 62301 (FDIS), but with
added clarifications specific to clothes
washers.
In response to the September 2010
NOPR, NEEA commented that DOE’s
proposed modes and definitions would
systematically exclude significant
potential sources of annual energy use
in many clothes washers. (NEEA, No. 12
at p. 2) NEEA also commented that DOE
did not incorporate the ‘‘Definitions’’
section of IEC Standard 62301, and
expressed concern about possible
discrepancies between the modes
specified in IEC Standard 62301 and the
modes that are defined in EPCA. (NEEA,
Public Meeting Transcript, No. 20 at pp.
22–23) NEEA added that not defining
the modes identically with the IEC
definitions could create inconsistencies
in the way the modes are measured.
(NEEA, Public Meeting Transcript, No.
20 at p. 24) NEEA’s comments regarding
specific modes and definitions are
addressed in the relevant sections that
follow.
For the reasons stated above, DOE
maintained the mode definitions
proposed in the September 2010 NOPR
in the August 2011 SNOPR. DOE further
proposed an ‘‘alternate approach’’ for
measuring total energy consumption. In
the alternate approach, the energy
consumption of all low-power modes
would be measured only in the inactive
and off modes, and all low-power mode
hours would be allocated to the inactive
and off modes, depending on which of
these modes is present.
In response to the August 2011
SNOPR, AHAM agreed that the Second
Edition definitions are identical to those
in the FDIS version and, thus, do not
need to be revised. AHAM added that if
DOE chooses to reference IEC Standard
62301 for those definitions, it should
reference the Second Edition, not the
FDIS, because the Second Edition is the
final, published, and most current
version of the standard. (AHAM, No. 24
at pp. 2–3)
DOE also proposed in the August
2011 SNOPR that certain installation
instructions in IEC Standard 62301
(Second Edition) regarding the
determination, classification, and
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13893
testing of relevant modes were not
appropriate for the clothes washer test
procedure. Section 5, paragraph 5.2 of
the Second Edition requires that where
instructions for use provide
configuration options, each relevant
option should be separately tested. As
stated in the August 2011 SNOPR, DOE
is concerned that this requirement to
separately test each configuration option
could substantially increase test burden.
It also potentially conflicts with the
requirement in paragraph 5.2 to set up
the product in accordance with the
instructions for use or, if no such
instructions are available, to use the
factory or default settings. Accordingly,
DOE proposed qualifying language in
the test procedure amendments to
disregard those portions of the
installation instructions. For these
reasons, DOE adopts language in today’s
final rule to disregard the provisions of
paragraph 5.2 regarding the
determination, classification, and
testing of relevant modes.
The sections below provide additional
details regarding the definition and
inclusion of each specific mode within
the revised test procedure.
Active Mode
DOE proposed in the September 2010
NOPR to define active mode as a mode
in which the clothes washer is
connected to a main power source; has
been activated; and is performing one or
more of the main functions of washing,
soaking, tumbling, agitating, rinsing,
and/or removing water from the
clothing, or is involved in functions
necessary for these main functions, such
as admitting water into the washer or
pumping water out of the washer. DOE
also proposed including three
additional modes within active mode:
Delay start mode, cycle finished mode,
and self-clean mode.
AHAM and the Pacific Gas and
Electric Company (PG&E), Southern
California Gas Company (SCG), San
Diego Gas and Electric (SDG&E), and
Southern California Edison (SCE)
(collectively, the ‘‘California Utilities’’)
support the active mode definition
proposed in the September 2010 NOPR,
which would include delay start, cycle
finished, and self-clean modes. (AHAM,
No. 14 at p. 4; California Utilities, No 18
at p. 2) However, AHAM stated that it
opposes DOE’s proposal to measure the
energy use in delay start and cycle
finished modes separately from the
energy use of the active washing mode
because delay start and cycle finished
modes represent a very small
contribution to the annual energy use.
(AHAM, No. 14 at pp. 3–4) The
California Utilities expressed concern
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about how the power in these modes is
measured and included in the proposed
test procedure. (California Utilities, No
18 at p. 2)
NEEA agreed with the proposal to
define delay start and cycle finished
modes as active modes, but commented
that the point at which the active
washing mode ends and the inactive
mode begins is not clear. NEEA
recommended that DOE define the end
of the active washing mode so that
manufacturers will know when to stop
the energy measurement. (NEEA, Public
Meeting Transcript, No. 20 at p. 97;
NEEA, No. 12 at pp. 2, 4, 5; NEEA, No.
26 at pp. 2, 4–5) NEEA further
commented that the spin cycle is
typically the last element of an active
wash mode, and access to the clothes
washing compartment is prevented until
this part of the cycle has concluded;
thus, the point at which the user can
gain access to the wash compartment is
one possible definition for the end of
the active washing mode. (NEEA, No. 12
at p. 7; NEEA, No. 26 at p. 6)
NEEA also suggested that active mode
could be defined as starting with the
activation of the delayed start mode, if
any (with the duration of delayed start
mode specified), and ending with the
beginning of the inactive mode (with the
duration of the cycle finished mode, if
any, specified, either in minutes or
number of cycles or both). (NEEA, No.
12 at p. 4–5) NEEA expressed concern
that the definition of the active washing
mode leaves out functions that might
occur in delay start, cycle finished, or
self-clean modes. (NEEA, No. 12 at p. 4)
NEEA further suggested that if delay
start and cycle finished modes are
defined as part of the active mode, DOE
could include them in the definition of
the active mode energy test cycle and
specify their durations. NEEA noted that
while this would lengthen the test cycle,
it would probably result in an overall
reduction in test procedure time by
eliminating the setup time and separate
measurement time required for
measuring energy consumption in these
two modes. (NEEA, No. 12 at p. 13–14)
The Natural Resources Defense
Council (NRDC) questioned whether the
active washing mode includes the preand post-parts of the active cycle.
(NRDC, Public Meeting Transcript, No.
20 at pp. 96–97)
DOE notes that the adopted definition
of active washing mode includes the
main function of removing water from
the clothing; i.e., the final spin cycle,
which is typically the last operation of
a wash cycle. DOE infers from NEEA’s
comments that its concern about
defining the end of active washing mode
relates to clothes washers in which
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there may be additional energyconsuming functions other than a
continuous status display in cycle
finished mode, such as periodic
tumbling or air circulation. As
discussed in section III.B.2.c, this final
rule does not require the testing of any
cycle-finished activity. Thus, for the
purpose of measuring energy
consumption in the energy test cycle,
the end of the active washing mode
occurs at the end of the final spin to
remove moisture.
This final rule also accounts for the
energy use of delay start mode by
allocating the hours not associated with
active washing mode (which include
those associated with delay start mode)
to the inactive and off modes, as
described in section III.B.7. The energy
use of delay start mode is therefore not
separately measured, as discussed in
section III.B.2.b.
Delay Start Mode
In the September 2010 NOPR, DOE
proposed to define delay start mode as
an active mode in which the start of the
active washing mode is facilitated by a
timer. Because delay start mode is not
a mode that may persist for an indefinite
time, and is uniquely associated with
the initiation of a main function (i.e.,
washing cycle), DOE determined that it
would not be considered as part of
standby mode.4 For this final rule, DOE
has determined that because delay start
is of limited duration and is uniquely
associated with the initiation of a
primary function, it should be
considered part of active mode.
DOE proposed in the September 2010
NOPR to measure delay start mode by
setting the delay start time to 5 hours,
allowing at least a 5-minute stabilization
period, and then measuring and
recording the average power over a 60minute measurement period.
In the August 2011 SNOPR, DOE
proposed not to adopt provisions to
measure delay start mode separately or
4 DOE noted in the September 2010 NOPR that
section 3.8 of IEC Standard 62301 Committee Draft
2 (IEC Standard 62301 CD2) provided the additional
clarification that ‘‘delay start mode is a one-off userinitiated short-duration function that is associated
with an active mode.’’ The subsequent IEC Standard
62301 CDV removed this clarification based on a
comment from a committee member that the
clarification conflicted with the proposed definition
of ‘‘standby mode,’’ which would include
‘‘activation of * * * active mode by * * * timer.’’
In its response to that comment, however, the IEC
reiterated that delay start mode is a one-off function
of limited duration, even though it took action to
delete the clarification in IEC Standard 62301 CDV.
DOE inferred this to mean that that delay start mode
should, therefore, be considered part of active
mode. DOE also notes that Annex A of IEC Standard
62301 (Second Edition) classifies delay start as a
secondary function and therefore not part of active
mode.
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as part of the active washing mode.
Instead, DOE proposed adopting the
‘‘alternate approach,’’ in which all lowpower mode hours would be allocated
to the inactive and off modes, and the
low-power mode energy consumption
would be measured only in the inactive
and off modes, depending on which of
these modes is present.
ALS, AHAM, and Whirlpool
supported DOE’s proposal to consider
delay start mode as part of active mode.
(ALS, No. 10 at p. 1; AHAM, No. 14 at
p. 3; Whirlpool No. 13 at p. 2) BSH
supported the proposed delay start
mode definition, and agreed that this
mode should be included in the test
procedure. (BSH, No. 17 at p. 2) AHAM
and ALS supported using the ‘‘alternate
approach’’ for measuring power in lowpower modes. AHAM opposed
separately measuring delay start mode,
stating that the additional complexities
of the test significantly add to the
testing burden without a corresponding
benefit to the public interest. AHAM
stated that the de minimus amount of
energy that will be measured, 0.04 to 0.2
kWh annually per DOE’s data, will not
add significantly, or possibly at all, to
national consumption figures. (AHAM,
No. 14 at p. 6; AHAM, No. 24 at p. 3;
ALS, No. 22 at p. 2)
Whirlpool commented that the LEDbased technology on which DOE
proposed a 60-minute delay start mode
is rapidly disappearing from new
product introductions. (Whirlpool No.
13 at p. 3) Whirlpool also commented
that the 60-minute delay start mode test
would add substantial test burden (6–7
percent), with little or no impact on
overall measured energy consumption.
Whirlpool believes that this would
create an unacceptable test burden for
manufacturers and strongly urged the
Department to drop this proposal.
(Whirlpool No. 13 at p. 4)
NEEA agreed that delay start mode is
an active mode, but stated that the
measurement of energy consumption in
this mode should be folded into the
measurements during the active
washing mode. (NEEA, No. 12 at p. 5;
NEEA, No. 26 at pp. 2, 7) NEEA
indicated that it would support the
proposed methodology of setting a 5hour delay and measuring for one hour
if DOE continued with the proposal to
measure the energy use of delay start
mode separately. NEEA also stated that
the warm-up period should be 10
minutes to be consistent with IEC
Standard 62301 general procedures,
rather than the proposed 5 minute
warm-up period. (NEEA, No. 12 at p. 5)
NEEA commented that DOE did not
fully understand the reasons why delay
start mode would be used in a
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household; according to NEEA, in some
households the delayed start function is
used to allow time for stain-removal
compounds to work before the wash
cycle starts. The delayed start time is
based on the stain-removal compound
manufacturer’s recommendation for a
soak time of 30 minutes. NEEA
suggested that DOE acquire consumer
data regarding usage of this feature,
including the average time spent in
delay start mode. (NEEA, No. 12 at pp.
5–6; NEEA, No. 26 at p. 7)
BSH commented that delay start mode
contributes a negligible amount of
energy consumption to consumers due
to low usage and low energy
consumption during usage. According
to BSH, measuring this energy is not a
valuable use of DOE or manufacturer lab
resources. (BSH, No. 17 at p. 2)
However, should measurement of delay
start mode be required, BSH agrees with
the proposed method. (BSH, No. 17 at
p. 3)
Upon consideration of the data and
estimates provided in the September
2010 NOPR, the uncertainty regarding
consumer usage patterns, and the
additional test burden that would be
required, DOE has determined that
measuring the energy consumption of
delay start mode separately would
introduce significant test burden
without a corresponding improvement
in a representative measure of annual
energy consumption. Therefore, this
final rule adopts the ‘‘alternate
approach,’’ in which the energy use in
all low-power modes (including delay
start mode) is accounted for by
allocating all low-power mode hours to
the inactive and off modes. Low-power
mode energy consumption is then
measured in the inactive and off modes,
depending on which of these modes is
present. Section III.B.7 provides
additional information regarding the
measurement of low-power mode. As a
result, this final rule does not include
provisions to measure delay start mode
separately as part of the active washing
mode.
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Cycle Finished Mode
DOE proposed in the September 2010
NOPR to define cycle finished mode as
an active mode that provides
continuous status display following
operation in the active washing mode.
As with delay start mode, cycle finished
mode is not a mode that may persist for
an indefinite time. Operation in cycle
finished mode occurs only after
operation in the active washing mode.
Therefore, DOE considered cycle
finished mode as a short-duration
function associated with active mode
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and proposed to define cycle finished
mode as a part of active mode.
DOE noted that some clothes washers
available at the time of publication of
the September 2010 NOPR offered
energy-consuming features other than a
continuous status display in cycle
finished mode. For example, certain
models may periodically tumble the
clothes to prevent wrinkles for up to 10
hours after the completion of the wash
cycle. Some models may also use a lowpower fan to circulate air around the
damp clothes to prevent odors. These
functions, while enabled, would use
more energy than the continuous
display normally associated with cycle
finished mode. However, DOE research
indicated that the number of residential
clothes washers equipped with such
features represents less than 10 percent
of the residential clothes washer market.
In addition, review of product literature
for the clothes washers equipped with
such features shows that these features
are typically consumer-selected options.
DOE determined that measuring the
energy use from these functions would
significantly increase the test cycle
duration to capture a negligible
contributor to annual energy
consumption. Therefore, DOE did not
propose to amend the test procedure to
address these specific cycle finished
mode functions.
DOE received numerous comments in
response to the September 2010 NOPR
regarding cycle finished mode. ALS,
Whirlpool, and AHAM stated that cycle
finished mode should be considered a
part of active mode. (ALS, No. 10 at p.
1; Whirlpool, No. 13 at p. 2; AHAM, No.
14 at p. 3) Whirlpool supported DOE’s
proposal to exclude cycle finished mode
energy consumption due to air
circulation or periodic tumbling because
these functions are very limited in their
application, and the measurement
burden would substantially outweigh
the value. (Whirlpool, No. 13 at p. 2)
AHAM commented that it does not
support measuring cycle finished mode
separately from the rest of the active
mode. (AHAM, No. 14 at p. 6)
NEEA disagreed with DOE’s proposed
cycle finished definition. NEEA
commented that the proposed cycle
finished mode definition comprises
only a display function, which could
exclude other energy-consuming
features in a cycle finished mode.
(NEEA, No. 12 at p. 2) Additionally,
NEEA commented that it did not
understand how DOE proposed to
measure energy consumption in cycle
finished mode for clothes washers with
energy-consuming features other than a
continuous status display, such as
tumbling of the drum or a fan
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circulating air. (NEEA, Public Meeting
Transcript, No. 20 at pp. 35–36) NEEA
stated that, based on information from a
clothes washer tax credit program
conducted in the state of Oregon, it is
aware of thousands of clothes washers
that include tumbling after the end of
the wash cycle. (NEEA, Public Meeting
Transcript, No. 20 at p.37)
To address these concerns, NEEA
proposed the following alternate
definition of cycle finished mode:
‘‘Cycle finished mode means the portion
of the active mode between the end of
the active washing mode and the
beginning of the inactive mode.’’
(NEEA, No. 12 at p. 2; NEEA, No. 26 at
p. 4) NEEA also suggested that DOE
create a methodology to measure cycle
finished activity, which IEC Standard
62301 is attempting to do, so that any
energy consumption that occurs during
that period can be measured. (NEEA,
Public Meeting Transcript, No. 20 at pp.
40–41) NEEA suggested that an
appropriate temperature use factor
(TUF) should be applied to delayed start
and cycle finished modes. (NEEA, No.
31 at p. 2)
NRDC, the American Council for an
Energy Efficient Economy (ACEEE), and
the Appliance Standards Awareness
Project (ASAP), jointly (hereafter, the
‘‘Joint Commenters’’) suggested that
DOE expand the definition of cycle
finished mode to include any energyconsuming features following operation
in the active washing mode. The Joint
Commenters stated that to avoid
additional testing burden for clothes
washers that only have a continuous
display in cycle finished mode, DOE
could specify a separate test procedure
and a different number of annual hours
to cycle finished mode for clothes
washers with additional energyconsuming features. Additionally, this
comment noted that if these features are
not captured in the test procedure,
manufacturers will have no incentive to
reduce their energy consumption in
cycle finished mode while providing the
additional functionality. (Joint
Commenters, No. 16 at p. 4) The Joint
Commenters and the California Utilities
also noted that machines having these
additional features in cycle finished
mode are likely to become more
available in the marketplace in the
future, and therefore it is not
appropriate to exclude the energy
consumption from these features in the
test procedure. (Joint Commenters, No.
16 at pp. 3–4; California Utilities, No. 18
at p. 2)
BSH commented that DOE needs to
define cycle finished mode more
clearly. According to BSH, the proposed
definition attempts to differentiate the
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end-of-cycle signal from a ‘‘left-on
mode.’’ BSH stated that it is unclear
what is considered cycle finished mode
and what is inactive mode, and that
more clarity and detail is needed in the
definition (BSH, No. 17 at p. 2)
In the August 2011 SNOPR, DOE
presented results from additional
laboratory testing to quantify the energy
consumption in cycle finished mode.
The test results indicated that including
specific measurement of a cycle finished
feature that incorporates intermittent
tumbling and air circulation would not
significantly impact the total annual
energy consumption. Furthermore,
measuring the energy use over the entire
duration of the cycle finished mode
could increase the test duration by up
to 10 hours, depending on the
maximum duration of the cycle finished
mode provided on the clothes washer.
Therefore, DOE proposed not to adopt
provisions to measure cycle finished
mode separately as part of the active
washing mode.
In response to the August 2011
SNOPR, Whirlpool agreed with DOE’s
proposal not to adopt measurement of
cycle finished mode, stating that the test
burden would be substantially greater
with virtually no consumer benefit.
(Whirlpool, No. 27 at pp. 1–2)
NEEA disagreed with the definition of
cycle finished mode and reiterated its
proposal to define cycle finished mode
as follows: ‘‘Cycle finished mode means
the portion of active mode between the
end of the active washing mode and the
beginning of the inactive mode.’’ NEEA
opposed ignoring cycle finished mode
hours and energy use, and stated that
the energy associated with cycle
finished mode should be included as
part of active mode. NEEA stated that in
the worst case scenario, the energy use
in cycle finished mode consumes
around 20 percent of the total clothes
washer machine energy, when dryer
energy use is excluded. NEEA stated
that cutting the cycle finished energy to
one-third of the worst-case scenario
would still represent 7 percent of the
total machine energy consumption.
NEEA stated that if energy use in cycle
finished mode is considered to be
insignificant, the same logic could be
applied to standby and off modes,
which is an argument Congress already
rejected. (NEEA, No. 26 at pp. 2–7)
The Joint Commenters stated that the
demonstrated potential consumption of
energy in cycle finished mode warrants
the testing of cycle finished mode in the
test procedure. The Joint Commenters
further stated that the amount of energy
consumed in cycle finished mode is
considerable when dryer energy is
disregarded. The Joint Commenters
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stated that when dryer energy use is
disregarded, inclusion of cycle finished
mode doubles the amount of energy
consumed while in low-power mode,
causing the energy consumption to
approach the energy consumed in active
mode. The Joint Commenters believe
that future clothes washers will likely
incorporate more features in cycle
finished mode, causing the energy
consumption in that mode to increase to
a more significant portion of the total
per-cycle energy. The Joint Commenters
support folding cycle finished mode
into the existing active mode test cycle
by either letting the clothes washer run
through the completed cycle finished
mode, or, alternatively, by terminating
the test one hour after the clothes
washer enters cycle finished mode. The
Joint Commenters do not believe that
this would significantly increase the test
burden, as it would lengthen the test by
one hour and would not require
additional setup or test preparation.
Finally, the Joint Commenters
commented that the uncertainty of
consumer usage patterns is an invalid
argument against its inclusion in the test
procedure, and that substituting
reasonable estimates as proxies would
suffice. (Joint Commenters, No. 23 at
pp. 2–4)
The California Utilities suggested
requiring separate measurements for
cycle finished mode. The California
Utilities stated that while they recognize
that cycle finished mode represents a
small percentage of energy consumption
when compared to dryer energy, they
believe it is a significant amount of
energy and similar in magnitude to the
electrical energy of the washer cycle.
The California Utilities further
commented in response to November
2011 SNOPR that they do not agree with
DOE’s assertion that cycle finished
mode is activated only by the consumer,
and that they possess knowledge that
cycle finished mode is the default
setting for certain clothes washer
models, and cannot be deactivated or
turned off. In addition, the California
Utilities stated that there are other units
that tumble more frequently than the
model DOE tested. Furthermore, the
California Utilities commented that the
test procedure should measure all lowpower modes, and that measuring all
energy-consuming modes will
encourage manufacturers to take
efficiency into account at the beginning
of their research and development
efforts. (California Utilities, No. 25 at p.
2; California Utilities, No. 36 at
pp. 1–2)
Upon consideration of the features
that may be energized during the time
period after the active washing mode
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and before the clothes washer enters
inactive or off mode, DOE agrees that
the proposed definition does not fully
describe the possible functions in cycle
finished mode. DOE concludes that
periodic tumbling of the clothing or air
circulation by means of a fan or blower
constitute additional active mode
functions outside the active washing
mode, and thus should be included in
the definition of cycle finished mode.
Therefore, today’s final rule adopts an
expanded definition of cycle finished
mode as ‘‘an active mode that provides
continuous status display, intermittent
tumbling, or air circulation following
operation in active washing mode.’’
However, upon consideration of the
data and estimates provided in the
September 2010 NOPR, the additional
energy consumption estimates provided
in the August 2011 SNOPR, the
uncertainty regarding consumer usage
patterns, and the additional test burden
required, today’s final rule adopts the
‘‘alternate approach’’ to account for the
energy use in cycle finished mode.
Under this approach, all low-power
mode hours are allocated to the inactive
and off modes, and the low-power mode
power is then measured in the inactive
and off modes, depending on which of
these modes is present. Section III.B.7
provides additional information
regarding the measurement of lowpower mode. DOE does not include
provisions to measure cycle finished
mode separately as part of the active
washing mode.
Self-Clean Mode
In the September 2010 NOPR, DOE
proposed to define self-clean mode as
an active clothes washer operating mode
that is (a) Dedicated to cleaning,
deodorizing, or sanitizing the clothes
washer by eliminating sources of odor,
bacteria, mold, and mildew; (b)
recommended to be run intermittently
by the manufacturer; and (c) separate
from clothes washing cycles. DOE
considered self-clean mode as a part of
the active mode because it is a function
necessary for the main functions
associated with washing clothes. A
clothes washer with excessive bacteria,
mildew, or odor cannot wash clothes
effectively.
NEEA supports DOE’s proposal to
include self-clean mode as a part of
active mode, and to include energy and
water consumption in this mode in the
test procedure. (NEEA, No. 12 at pp. 5,
9; NEEA, No. 26 at pp. 5–6) However,
NEEA suggests the following definition
of self-clean mode to clarify the
proposed version: ‘‘Self-cleaning mode
means an active clothes washer
operating mode that is recommended by
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the manufacturer to be run for the
purpose of cleaning, deodorizing, or
sanitizing the clothes washer by
eliminating sources of odor, bacteria,
mold and mildew.’’ (NEEA, No. 12 at p.
5; NEEA, No. 26 at pp. 6) NEEA stated
that the number of self-clean annual
cycles should be based on the
recommendations of the manufacturer
because consumers are unlikely to use
these cycles in a way that is different
than recommended. NEEA also strongly
recommended that whatever cycle is
recommended by a manufacturer for a
self-cleaning function should be the one
measured as the self-cleaning cycle.
(NEEA, No. 12 at p. 9) NEEA also urged
DOE to acquire consumer usage data on
how self-clean cycles are actually used.
(NEEA, No. 12 at p. 9; NEEA, No. 26 at
p. 8)
The Joint Commenters support the
inclusion of self-clean mode in the test
procedure. The Joint Commenters stated
that the definition should not be limited
to machines equipped with an explicitly
designated self-clean cycle, because selfcleaning may be undertaken with an
appropriate cleaning compound through
the use of a standard cycle available for
washing clothes. (Joint Commenters, No.
16 at p. 3; Joint Commenters, No. 23 at
p. 5)
The Joint Commenters also
recommended that a usage factor of 12
cycles per year should not be uniformly
applied to all washers, but rather should
be based on the level of usage
recommended by the manufacturer,
converted as necessary to the
appropriate number of cycles per year
for the test procedure. This would
provide further encouragement for
manufacturers to develop approaches to
sanitizing and deodorizing issues that
are less energy- and water-intensive
than current practices. (Joint
Commenters, No. 16 at p. 3; Joint
Commenters, No. 23 at p. 5)
The California Utilities commented
that the proposed definition is
potentially too restrictive because
manufacturers may recommend
intermittent self-clean cycles on
machines without a dedicated self-clean
feature or control. The California
Utilities also commented that the
calculation of self-clean cycles per year
should be based on manufacturer
recommendations in the product
literature, rather than on a fixed number
of annual self-clean cycles for all clothes
washers. The California Utilities
suggested that for clothes washer
models that meet the definition of selfclean, but for which the manufacturer
does not recommend a specific usage
frequency for the self-clean cycle, the
test procedure should assume the
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default value of 12 self-clean cycles per
year. (California Utilities, No. 18 at p. 3;
California Utilities, No. 25 at p. 3)
NRDC expressed concern that if a
manufacturer recommends a periodic
sanitizing regimen on a machine with
no hardware or software dedicated to
self-cleaning, these cycles would not be
captured by the proposed definition.
NRDC also commented that self-clean
mode should be based on the
manufacturer’s recommendation, and
not on design features. (NRDC, Public
Meeting Transcript, No. 20 at pp. 47–48,
79–80)
Whirlpool commented that DOE
should not include self-clean cycles in
the clothes washer test procedure.
Whirlpool stated that including this
mode for clothes washers with such
functionality, while not including it for
other machines, disadvantages
machines that include a self-clean cycle.
According to Whirlpool, some consumer
publications and manufacturers
recommend running periodic cleaning
cycles with baking soda or vinegar, and
there is no known data on the consumer
use of such practice. (Whirlpool, No. 13
at p. 2) Whirlpool proprietary data
indicates that actual consumer use of a
self-clean cycle is substantially less than
the 12 times per year that DOE
proposed, and that this data supports
exclusion of self-clean energy from the
test procedure. (Whirlpool, No. 13 at p.
5–6) Whirlpool also commented that if
the self-clean cycle is included at the
frequency of use recommended by the
manufacturer, this could lead to
manufacturers suggesting less frequent
use. (Whirlpool, No. 13 at p. 5–6)
Whirlpool estimated that the inclusion
of a self-clean cycle in the test
procedure would add approximately 8
percent to the overall test burden, or 8
hours, and that the amount of energy
and water used by the average
Whirlpool clothes washer during such
cycles per year would be less than 1
percent of annual energy consumption
and 3 percent of annual water
consumption. Whirlpool believes that
the added test burden outweighs the
added benefit of including self-clean
cycles in the test procedure. (Whirlpool,
No. 13 at pp. 2, 6) However, Whirlpool
agreed that if self-clean mode were
included in the test procedure, it would
be a part of active mode. (Whirlpool,
No. 13 at p. 2).
AHAM opposes the inclusion of selfclean mode in the test procedure, but
stated that if DOE decides to include it,
AHAM agrees with the proposed
definition as the best way to ensure
measurement of all machines with a
self-clean feature. (AHAM, No. 14 at p.
4) AHAM also notes that self-clean
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cycles have become necessary in large
part due to the increasingly stringent
energy and water consumption
standards which, in practice, require
many machines to use cold water
instead of hot or warm water, and to use
less water. (AHAM, No. 14 at p. 10)
AHAM commented that there is no
consumer use data to show whether
and/or how often consumers use selfclean cycles, and that test procedures
must be representative of actual
consumer use, not manufacturer
recommendations. AHAM believes that
DOE should not include additional
energy measurements in the test
procedure without consumer data to
support its addition and to quantify the
energy impact. (AHAM, No .14 at p. 10)
AHAM also commented that DOE’s
proposal to include self-clean cycles
unfairly disadvantages clothes washers
with a self-clean feature, which may disincentivize the feature, the result of
which would not benefit consumers.
AHAM stated that it is difficult to define
an approach that would not encourage
test procedure circumvention. (AHAM,
No. 14 at p. 11).
BSH stated that self-clean mode
should include only cycles specifically
designed and provided for such
activities. According to BSH, consumers
are less likely to perform such activities
without a dedicated program or option.
(BSH, No 17 at p. 2) BSH commented
that should the self-clean cycle be
included, the number of cycles per year
should be specified to match the
manufacturer’s suggestion to the
customer. Otherwise, the motivation to
reduce the need for such cycles is not
present and manufacturers may not
pursue innovations to reduce this need.
(BSH, No. 17 at p. 2) However, BSH
commented that it does not see the
value to the consumer or DOE in
assessing self-clean mode energy
consumption, and suggests that these
hours be removed or allocated to the
active washing mode according to the
self-cleaning cycles per year specified
by the manufacturer. (BSH, No. 17 at
p. 3) BSH stated that including the selfcleaning cycles will not significantly
contribute to the annual energy
consumption of residential washing
machines. BSH suggests that instead of
testing the self-clean cycle, the total
number of annual active-mode cycles
per year in the current energy
calculations could be increased by a
small value. (BSH, No. 17 at p. 2)
Additionally, BSH does not agree that
self-clean modes are necessary for the
main functions associated with clothes
washing, otherwise all clothes washers
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would need such cycles. (BSH, No. 17
at p. 2).
ALS opposes DOE’s proposed
definition of self-clean mode as being
part of active mode, and commented
that DOE should not propose an energy
test measurement without consumer use
data to support it. (ALS, No. 10 at p. 1)
ALS stated that self-clean cycles should
not be added to the test procedure until
there is reliable consumer data and an
understanding of the energy consumed
in self-clean cycles. ALS also stated that
the test burden on manufacturers
outweighs the public benefit at this
time. (ALS, No. 10 at p. 3).
China does not support DOE’s
proposal to include self-clean mode in
the test procedure. China commented
that self-clean functions reduce bacteria
and mildew that may harm the user, and
thus are significant for health reasons.
China stated that if self-clean mode
were included in the test procedure,
manufacturers might reduce the
temperature or shorten the cycle time of
a self-clean cycle to improve energy
performance, which would be
detrimental to consumers. China also
expressed concern that this standard
would lead to differences in energy
consumption between units with and
without self-cleaning functions, and
stated that such distinct types of clothes
washers should not be subject to the
same energy standard. China noted that,
as DOE proposed, self-clean mode
represents a very short use time of only
16 hours per year, or 1.3 hours per
month. Because of this minimal use
time, China recommends not including
the energy and water consumption
during a self-clean cycle in the test
procedure. (China, No. 19 at p. 3).
GE commented that it does not
disagree with DOE’s assumption of 12
self-clean cycles per year, but stated that
consumers would be dissatisfied to have
to use this feature monthly. GE expects
that manufacturers will be working to
reduce the required number of self-clean
cycles per year. GE suggested that DOE
use the manufacturer’s recommendation
for the number of self-clean cycles. (GE,
Public Meeting Transcript, No. 20 at pp.
77–78, 107).
In reviewing these comments, DOE
recognizes a lack of consensus regarding
whether a self-clean mode is uniquely
associated with a dedicated feature
provided on a clothes washer, or
whether self-clean mode may describe a
consumer-initiated function associated
with a normal wash cycle. DOE
recognizes that a cleaning or
deodorizing action in the clothes
container may be achieved in either
case, but that it is not clear whether
such a cycle would be differentiable
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from a normal wash cycle in the event
that a self-clean feature is not provided.
In addition, DOE lacks information on
the consumer usage of self-clean
features or typical cycles run solely for
self-clean purposes, including whether
consumer usage reflects manufacturer
recommendations. In light of this
uncertainty, and considering that the
annual energy use associated with selfclean mode would be relatively small,
DOE has determined for today’s final
rule that self-clean mode should not be
addressed in the amended test
procedure. Therefore, DOE is not
adopting a definition for a self-clean
cycle, and is not adding any provisions
to the test procedure for measuring selfclean energy and water consumption. In
addition, today’s final rule adds a
clarifying statement that the energy test
cycle shall not include any cycle, if
available, that is dedicated for cleaning,
deodorizing, or sanitizing the clothes
washer, and is separate from clothes
washing cycles.
Standby Mode
In the September 2010 NOPR, DOE
proposed to define standby mode as any
mode in which the clothes washer is
connected to a main power source and
offers one or more of the following useroriented or protective functions, which
may persist for an indefinite time: (a) To
facilitate the activation of other modes
(including activation or deactivation of
active mode) by remote switch
(including remote control), internal
sensor, or timer; (b) continuous
functions, including information or
status displays (including clocks) and
sensor-based functions.
DOE proposed an additional
clarification that a timer should be
considered a continuous clock function
(which may be associated with a
display) that provides regular scheduled
tasks (e.g., switching) and that operates
on a continuous basis. This proposed
definition was developed based on the
definition provided in IEC Standard
62301 FDIS.
As proposed, the definition of standby
mode allowed for multiple modes to be
considered a standby mode. DOE had
identified only one mode that would be
considered a standby mode under the
proposed definition. DOE proposed to
define ‘‘inactive mode’’ as a standby
mode that facilitates the activation of
active mode by remote switch
(including remote control), internal
sensor, or timer, or that provides
continuous status display. Although it
identified only this one particular
standby mode, DOE remained open to
consideration of additional standby
modes. DOE retained this definition of
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standby mode in the August 2011
SNOPR.
ALS supported DOE’s proposal for
inactive mode to be the only standby
mode. ALS also stated that it is unaware
of any modes for clothes washers that
represent significant energy use, other
than those proposed by DOE. (ALS, No.
10 at p. 1) AHAM commented that it
does not support the inclusion of oneway remote control energy in the
definition of standby mode. According
to AHAM, standard remote controls
power down products rather than
powering them off, such that the
product can be turned on again through
use of the remote. AHAM contrasted
that to one-way remote controls, which
turn a product off completely, such that
it cannot be turned on again through use
of the remote control. AHAM stated that
one-way remote controls should be
included under the definition of off
mode to encourage manufacturers to
design products with this feature, which
could result in decreased energy use.
(AHAM, No. 14 at p. 5).
Whirlpool stated that the test burden
for inactive mode testing is significant
(approximately an 8 percent increase)
with virtually no consumer benefit.
(Whirlpool, No. 13 at p. 4).
DOE notes that the definition of
standby mode proposed in the
September 2010 NOPR states that
standby mode includes user-oriented or
protective functions to facilitate the
activation of other modes (including
activation or deactivation of active
mode) by remote switch (including
remote control), internal sensor, or
timer. If the clothes washer is
consuming energy to power an infrared
sensor used to receive signals from a
remote control (while not operating in
the active mode), such a function would
be considered part of standby mode,
regardless of whether the remote is
classified as ‘‘one-way’’ or ‘‘two-way.’’
However, if a ‘‘one-way’’ remote control
powers down the clothes washer,
including turning off any infrared
sensors to receive signals from a remote
control, the unit would transition to off
mode once it is powered down, if no
other standby mode functions within
the clothes washer are energized.
Depending on whether the unit is
capable of operating in both a standby
mode and off mode or just the off mode,
the annual hours associated with
standby and off modes would be
allocated accordingly.
In today’s final rule, DOE retains the
definitions of standby mode and
inactive mode as proposed in the
September 2010 NOPR and August 2011
SNOPR. Section III.B.7 provides further
details on the test method for standby
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mode adopted in the revised test
procedure. As described further in
section III.G.1, DOE believes that by
adopting the ‘‘alternate approach’’ for
measuring standby and off mode power,
this final rule will not impose
significant additional test burden on
manufacturers.
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Off Mode
DOE proposed in the September 2010
NOPR to define ‘‘off mode’’ as any mode
in which the clothes washer is
connected to a mains power source and
is not providing any standby mode or
active mode function, and the mode
may persist for an indefinite time. An
indicator that only shows the user that
the product is in the off position would
be included within the proposed off
mode classification. This definition was
developed based on the definitions
provided in IEC Standard 62301 FDIS.
DOE retained this definition of off mode
in the August 2011 SNOPR.
Under the definitions proposed in the
September 2010 NOPR, a clothes washer
equipped with a mechanical on/off
switch that can disconnect power to the
display and/or control components
would be considered as operating in the
off mode when the switch is in the ‘‘off’’
position, provided that no other standby
or active mode functions are energized.
An energized light-emitting diode (LED)
or other indicator that shows the user
only that the product is in the off
position would be considered part of off
mode under the proposed definition,
provided that no other standby or active
mode functions are energized.
Other than those comments addressed
in the August 2011 SNOPR, DOE did
not receive any additional comments on
the proposed definition of off mode.
Therefore, for the reasons stated above
and in the August 2011 SNOPR, DOE
adopts this definition for the amended
clothes washer test procedure in this
final rule.
Network Mode
DOE noted in the September 2010
NOPR that IEC Standard 62301 FDIS
provides definitions for network mode
that DOE determined were not
applicable to the clothes washer test
procedure. Section 3.7 of IEC Standard
62301 FDIS defines network mode as a
mode category that includes ‘‘any
product modes where the energy using
product is connected to a mains power
source and at least one network function
is activated (such as reactivation via
network command or network integrity
communication) but where the primary
function is not active.’’ IEC Standard
62301 FDIS also provided a note, stating
that ‘‘[w]here a network function is
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provided, but is not active and/or not
connected to a network, then this mode
is not applicable. A network function
could become active intermittently
according to a fixed schedule or in
response to a network requirement. A
‘network’ in this context includes
communication between two or more
separate independently powered
devices or products. A network does not
include one or more controls which are
dedicated to a single product. Network
mode may include one or more standby
functions.’’ DOE did not propose any
amendments to include provisions for
testing network mode energy
consumption in clothes washers.
AHAM, ALS, BSH, and Whirlpool
stated that network mode should not be
included in the test procedure at this
time because no products are currently
available on the market with such a
feature. (AHAM, No. 14 at pp. 5, 11;
ALS, No. 10 at p. 3; BSH, No. 17 at pp.
3–4; Whirlpool, No. 13 at p. 2)
Whirlpool, AHAM, and NRDC further
commented that DOE could consider
network mode by creating a
‘‘placeholder’’ for it in the test
procedure, so that when there is
sufficient volume of network-capable
clothes washers in the market, this
mode could be addressed. (Whirlpool,
Public Meeting Transcript, No. 20 at pp.
42–43, 46; AHAM, Public Meeting
Transcript, No. 20 at pp. 43–44, 109;
NRDC, Public Meeting Transcript, No.
20 at pp. 109–110).
NEEA disagreed with DOE’s proposal
to not include provisions for network
mode in the test procedure. NEEA stated
that, although no clothes washers
currently on the market are capable of
this mode, it has communicated with
microprocessor manufacturers who
intend to sell the hardware that would
allow such a mode. According to NEEA,
informal estimates in these
conversations revealed that network
mode could significantly increase the
energy consumption in the inactive
mode. NEEA suggested that DOE define
and allow for measuring the energy use
of network mode, as defined in IEC
Standard 62301, and recommended that
DOE include network mode under the
inactive mode definition. (NEEA, No. 12
at pp. 2, 4, 10; NEEA Public Meeting
Transcript, No. 20 at pp. 38–41, 45–46;
NEEA, No. 26 at p. 4) NEEA supports
including the definitions and
methodology for network mode energy
from IEC Standard 62301 (Second
Edition). NEEA also commented that if
DOE chooses to incorporate a network
mode definition different from that in
IEC Standard 62301, there could be
inconsistencies when the test method
from IEC Standard 62301 is applied
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using DOE’s mode definitions. (NEEA,
Public Meeting Transcript, No. 20 at
pp. 22–24; NEEA, No. 26 at p. 9).
The Joint Commenters stated that
clothes washers with a network mode
may become common by 2015 when the
new standards take effect, and multiple
manufacturers have indicated their
plans to introduce these features.
Therefore, the Joint Commenters believe
it is important for the test procedure to
capture at a minimum the standby
energy consumption associated with a
network mode. The Joint Commenters
further stated that network mode could
require power consumption of 2–5
Watts, corresponding to 18–44 kWh per
year. According to the Joint
Commenters, if network mode is not
captured by the test procedures,
manufacturers will have no incentive to
employ lower-power technologies for
this feature. (Joint Commenters, No. 16
at pp. 1–2) The Joint Commenters and
the California Utilities stated that, due
to the lack of sufficient data associated
with development of a test method for
network mode, DOE should develop a
sufficiently broad definition for inactive
or standby mode to ensure that the
standby test method would capture any
energy consumption associated with
network functionality, regardless of
whether the product is connected to a
network. (Joint Commenters, No. 16 at
p. 2; California Utilities, No. 18 at
pp. 1–2; California Utilities, No. 25 at
p. 2).
NRDC commented that the AHAM–
ACEEE Agreement on Minimum Federal
Efficiency Standards, Smart Appliances,
Federal Incentives and Related Matters
for Specified Appliances 5 includes an
explicit commitment to recognize
network functionality for major
appliances in the ENERGY STAR
context, so the test procedure should be
prepared to assess whatever energy
consumption is associated with that
functionality. (NRDC, Public Meeting
Transcript, No. 20 at pp. 41–42) The
California Utilities further commented
that DOE should include the definition
of network mode to harmonize with the
IEC Standard, and that it should act
swiftly to issue an amendment to
include a test method for network mode
when it becomes aware of clothes
washer models with this feature in the
marketplace. The California Utilities
expect network mode to become a
regular feature in the future. The
California Utilities stated that if DOE
cannot develop a test procedure in this
5 The AHAM–ACEEE Agreement on Minimum
Federal Efficiency Standards, Smart Appliances,
Federal Incentives and Related Matters for
Specified Appliances is available at DOE Docket
No. EERE–2010–BT–TP–0021, Comment No. 2.
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rulemaking for products connected to
networks, DOE should amend the test
procedure as soon as it becomes aware
of commercially available clothes
washer models with this feature.
(California Utilities, No. 18 at pp. 1–2;
California Utilities, No. 25 at pp. 1–2).
DOE interprets the network mode
provisions in IEC Standard 62301
(Second Edition) to be a forwardthinking attempt by the IEC to anticipate
and/or promote technological change by
industry. DOE is unaware, however, of
any clothes washers currently on the
market with network mode capabilities
as of the date of today’s final rule.
Consequently, DOE can not thoroughly
evaluate these network mode
provisions, as would be required to
justify their incorporation into DOE’s
test procedures at this time. DOE notes
that although an individual appliance
may consume some small amount of
power in network mode, the potential
exists for energy-related benefits that
more than offset this additional power
consumption if the appliance can be
controlled by the ‘‘smart grid’’ to
consume power during non-peak
periods. Although DOE is supportive of
efforts to develop smart-grid and other
network-enabled technologies in clothes
washers, today’s final rule does not
incorporate the network mode
provisions due to the lack of available
data that would be required to justify
their inclusion.
Disconnected Mode
DOE noted in the September 2010
NOPR that section 3.9 of IEC Standard
62301 FDIS provided a definition of
‘‘disconnected mode,’’ which is ‘‘the
state where all connections to mains
power sources of the energy using
product are removed or interrupted.’’
IEC Standard 62301 FDIS also added a
note that common terms such as
‘‘unplugged’’ or ‘‘cut off from mains’’
also describe this mode, and that this
mode is not part of the low-power mode
category. Since there would be no
energy use in a disconnected mode,
DOE did not propose a definition or
testing methods for such a mode.
AHAM agreed with DOE’s proposal to
not include test procedures for
disconnected mode, because there
would be no energy use in this mode.
(AHAM, No. 14 at p. 5).
For the reasons stated in the
September 2010 NOPR, DOE is not
adopting a definition or testing methods
for disconnected mode in this final rule.
3. Power Stabilization Criteria and
Measurement Methods
In the September 2010 NOPR, DOE
proposed to require measurement of
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standby mode and off mode power
using section 5, paragraph 5.3 of the
First Edition, clarified by requiring the
product to stabilize for at least 30
minutes, and using a measurement
period of not less than 10 minutes for
cycle finished mode, inactive mode, and
off mode. For instances where the
power varies over a cycle, as described
in section 5, paragraph 5.3.2 of the First
Edition, DOE proposed to require the
use of the average power approach in
section 5, paragraph 5.3.2(a).
The Second Edition contains more
detailed techniques for evaluating the
stability of the power and measuring the
power consumption of loads with
different stability characteristics. In the
Second Edition, the user is given a
choice of measurement procedures,
including a sampling method, average
reading method, and direct meter
reading method. In the August 2011
SNOPR, DOE evaluated these new
methods in terms of test burden and
improvement in results as compared to
the methods provided in the First
Edition. Based on this analysis, DOE
proposed using the sampling method for
all measurements of standby mode and
off mode power. The following sections
provide additional details on each
power stability scenario.
Stable, Non-Cyclic Power
In the September 2010 NOPR, DOE
proposed measuring stable, non-cyclic
power by allowing the product to
stabilize for at least 30 minutes,
followed by a measurement period of at
least 10 minutes using the test
procedure specified in section 5,
paragraph 5.3.1 of the First Edition. This
method defines stable power as varying
less than 5 percent over a 5 minute
period. If the load is considered stable,
the power can be recorded directly from
the power-measuring instrument at the
end of the measurement period.
In the August 2011 SNOPR, DOE
proposed measuring stable, non-cyclic
power by allowing the product
sufficient time to reach its low power
state and then following the test
procedure for the sampling method
specified in section 5, paragraph 5.3.2 of
the Second Edition. The sampling
method requires measuring and
recording the power over a period of at
least 15 minutes. Data from the first
third of the measurement period are
discarded, and stability is evaluated by
a linear regression through all power
readings in the second two-thirds of the
data. If the slope of the linear regression
satisfies the stability criterion, power
consumption is calculated as the
average of the power readings during
the second two-thirds of the
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measurement period. If the slope of the
linear regression does not satisfy the
stability criterion, the total period is
continuously extended—up to a
maximum of 3 hours—until the stability
criterion is satisfied for the second twothirds of the data taken over the total
period.
In response to the August 2011
SNOPR, NEEA supports DOE’s proposal
to require the use of the sampling
method for measuring power
consumption in the inactive and off
modes. (NEEA, No. 26 at p. 2).
For the reasons stated in the August
2011 SNOPR, DOE specifies the use of
the sampling method in section 5,
paragraph 5.3.2 of the Second Edition
for all measurements of standby and off
mode power, including stable, noncyclic power.
Unstable (Varying), Non-Cyclic Power
In the September 2010 NOPR, DOE
proposed measuring unstable (varying),
non-cyclic power by allowing the
product to stabilize for at least 30
minutes, followed by a measurement
period of at least 10 minutes using the
average power approach described in
section 5, paragraph 5.3.2(a) of the First
Edition. The average power approach
requires using an instrument that can
measure the true average power over a
period of at least 5 minutes (which DOE
proposed to extend to a minimum of 10
minutes). The average power can be
recorded directly from the powermeasuring instrument at the end of the
measurement period.
In the August 2011 SNOPR, DOE
proposed measuring unstable (varying),
non-cyclic power by allowing the
product sufficient time to reach its low
power state and then following the test
procedure for the sampling method
specified in section 5, paragraph 5.3.2 of
the Second Edition. Using the sampling
method, for modes that are known to be
non-cyclic and unstable (varying), the
test period must be long enough so that
the cumulative average of all data points
taken during the second two thirds of
the total period fall within a band of
±0.2%.6 When testing such modes, the
total period must be at least 60 minutes.
For the reasons stated in the August
2011 SNOPR, DOE specifies the use of
the sampling method in section 5,
paragraph 5.3.2 of the Second Edition
for all measurements of standby and off
mode power, including unstable
(varying), non-cyclic power.
6 DOE interprets this provision as follows: The
cumulative average is the mean of all data points
up to and including the most recent data point.
Each data point collected has a cumulative average
associated with it, and the variation of those
averages must remain within the given band.
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Cyclic Power
In the September 2010 NOPR, DOE
proposed measuring cyclic power by
allowing the product to stabilize for at
least 30 minutes, followed by a
measurement period of at least
10 minutes using the average power
approach described in section 5,
paragraph 5.3.2(a) of the First Edition.
The average power approach requires
using an instrument that can measure
the true average power over a period of
at least 5 minutes (which DOE proposed
to extend to a minimum of 10 minutes).
The average power can be recorded
directly from the power-measuring
instrument at the end of the
measurement period. For cyclic power,
section 5.3.2(a) specifies that the test
period shall be one or more complete
cycles to get a representative average
value.
In response to the September 2010
NOPR, NEEA commented that DOE
should refer to the relevant sections of
IEC Standard 62301 rather than try to
simplify the language in section 3.11 of
appendix J2, which could be potentially
misleading or confusing. NEEA
described a potential conflict between
the language in DOE’s proposed Section
3.11 of appendix J2 and that in the
referenced IEC Standard 62301 test
procedure: In the case of cycle finished
mode, which often may involve more
than just a display, cyclic power
consumption may persist for a limited
duration, which would require using the
‘‘sampling approach’’ for power
measurement rather than the ‘‘average
power approach’’ as proposed in section
3.11.2 of appendix J2. (NEEA, No. 12 at
pp. 3–4) NEEA also stated that IEC
Standard 62301 CDV specifications for a
longer 30-minute stabilization period
are superior to the shorter 10-minute
period specified in the FDIS version. In
addition, NEEA believes that if cyclic
power changes are discovered during
the stabilization period, the power
measurement period should extend for
at least four cycles or one hour,
whichever is longer, noting that the
sampling method in Section 5.3.1 of the
IEC Standard 62301 FDIS calls for
measurement over a minimum of four
cycles in such circumstances. (NEEA,
No.12 at p. 6).
In the August 2011 SNOPR, DOE
proposed measuring cyclic power by
allowing the product sufficient time to
reach its low power state and then
following the test procedure for the
sampling method specified in section 5,
paragraph 5.3.2 of the Second Edition.
For cyclic power modes, the sampling
method requires a measurement period
of at least four complete cycles (for a
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total of at least 40 minutes), divided into
two comparison periods. Stability is
established by dividing the difference in
average power measured in each
comparison period by the time
difference of the mid-point of each
comparison period. This ‘‘slope’’ must
satisfy the specified stability criterion. If
the appropriate stability criterion is not
satisfied, additional cycles are added to
each comparison period until stability is
achieved. Once stability has been
achieved, the power is calculated as the
average of all readings from both
comparison periods.
As described in the August 2011
SNOPR, DOE believes that the
methodology for measuring cyclic
power in the Second Edition produces
an improved measurement over the
methodology from the First Edition.
DOE received no comments on this
issue in response to the proposal in the
August 2011 SNOPR. Therefore, for the
reasons specified in the August 2011
SNOPR, DOE specifies the use of the
sampling method in section 5,
paragraph 5.3.2 of the Second Edition
for all measurements of standby and off
mode power, including cyclic power.
4. Use of Default Settings
In the September 2010 NOPR, DOE
proposed that the clothes washer be
installed according to the
manufacturer’s instructions, but did not
propose additional provisions to require
the use of default settings for testing
standby energy consumption because it
did not have information regarding the
likelihood that consumers will alter the
default display settings.
In the August 2011 SNOPR, DOE
proposed incorporating by reference the
installation instructions in section 5,
paragraph 5.2 of the Second Edition.
The Second Edition adds certain
clarifications to the installation and
setup procedures in section 5, paragraph
5.2 of the First Edition. The First
Edition required that the product be
installed in accordance with the
manufacturer’s instructions, except if
those instructions conflict with the
requirements of the standard, and that if
no instructions are given, the factory or
default settings must be used. The
Second Edition adds provisions
regarding products equipped with
battery recharging circuits, as well as
instructions for testing each relevant
configuration option identified in the
product’s instructions for use. DOE is
not aware of any clothes washers with
a battery recharging circuit. DOE agreed
with commenters that testing a clothes
washer for standby mode energy use at
the default setting, or as-shipped if a
default setting is not indicated, would
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ensure consistency of results from test
to test and among test laboratories.
NEEA supported DOE’s proposal to
disregard the portions of the installation
instructions in section 5, paragraph 5.2
of IEC Standard 62301 that are not
appropriate for the clothes washer test
procedure; i.e., those pertaining to
batteries and the determination,
classification, and testing of relevant
modes. (NEEA, No. 26 at p. 2).
For the reasons stated in the August
2011 SNOPR, DOE adopts language in
this final rule to disregard the
provisions of paragraph 5.2 regarding
batteries and, as described in section
III.B.2, the provisions regarding the
determination, classification, and
testing of relevant modes. This final rule
incorporates by reference, with
qualification as discussed above, the
installation instructions in section 5,
paragraph 5.2 of the Second Edition.
5. Test Room Ambient Temperature
Conditions for Standby Power Testing
DOE proposed in the September 2010
NOPR that test room ambient
temperatures for standby mode and off
mode testing be specified according to
section 4, paragraph 4.2 of IEC Standard
62301 (First Edition). The current DOE
test procedure includes a test room
ambient air specification of 75 ± 5 °F,
for water-heating clothes washers only.
This specification is narrower than the
range specified by IEC Standard 62301
of 73.4 ± 9 °F. The September 2010
NOPR proposal would require
manufacturers of water-heating clothes
washers to use the more stringent
ambient temperature range in the
current DOE test procedure if all active
mode, standby mode, and off mode
testing is conducted simultaneously in
the same test room on multiple clothes
washers. Alternatively, the temperature
specifications in IEC Standard 62301
would allow a manufacturer that opts to
conduct standby and off mode testing
separately from active mode testing
more latitude in maintaining ambient
conditions. The test room ambient
conditions specified in IEC Standard
62301 (Second Edition) are identical to
those specified in the First Edition.
BSH and NEEA support DOE’s
proposals regarding test room ambient
temperature range. (BSH, No. 17 at p. 3;
NEEA, No. 12 at p. 6) AHAM, ALS, and
Whirlpool support using 75 ± 5 °F as the
test room ambient temperature. (AHAM,
No. 14 at p. 7; ALS, No. 10 at p. 2;
Whirlpool, No. 13 at p. 3) Whirlpool
and AHAM believe that this
requirement should apply to all clothes
washer products, not just those that
include water-heating capability,
because ambient temperature
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significantly impacts test procedure
results and should be consistent across
all machines. Whirlpool and AHAM
stated that this tighter tolerance will
help drive consistency, repeatability
and reproducibility across machines
and laboratories. (Whirlpool, No. 13 at
p. 3; AHAM, No. 14 at p. 7; AHAM,
Public Meeting Transcript, No. 20 at p.
58) AHAM commented further that
should DOE proceed with its proposal
for water-heating clothes washers only,
it does not support allowing the use of
the less stringent IEC range (73 ± 9 °F)
because the more stringent DOE range
(75 ± 5 °F) falls within the IEC range.
Thus, there is no added test burden
when the more stringent DOE range is
used for testing standby and off modes.
(AHAM, No. 14 at p. 7).
Whirlpool and AHAM commented
that there appears to be some
inconsistency between DOE’s proposal
and the proposed language from section
2.11.2 in appendix J2, as to whether
DOE is proposing to allow use of the
more stringent or less stringent ambient
temperature range. It appears to
Whirlpool and AHAM, based on the
proposed language in section 2.11.2,
that DOE’s intent is to allow use of the
less stringent IEC Standard 62301, First
Edition ambient air temperature
conditions of 73 ± 9 °F for measurement
of standby, off, delay start, and cycle
finished mode testing. (Whirlpool, No.
13 at p. 3; AHAM, No. 14 at p. 6) AHAM
commented that DOE should reference
IEC Standard 62301 Second Edition,
FDIS version rather than the First
Edition. (AHAM, No. 14 at p. 6).
After considering comments from
interested parties, DOE has determined
that the same ambient test room
temperature requirement should apply
to all clothes washer products, not just
those that include water-heating
capability. Because the temperature of
the internal clothes washer components
will be the same as the ambient room air
temperature at the start of a test,
maintaining the same ambient test room
temperature would ensure that any heat
loss from water in the machine during
the test would be factored into the
measured energy and water use in a
consistent manner across all machines,
both water-heating and non-waterheating. DOE also concurs with some
commenters that the more stringent
temperature range of 75 ± 5 °F will
produce more accurate, repeatable, and
reproducible results compared to the 73
± 9 °F range. DOE also notes that the
current test procedure requires a
temperature range of 75 ± 5 °F for active
mode testing. Therefore, performing
standby and off mode testing at 75 ± 5
°F should not result in any additional
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test burden for manufacturers. For these
reasons, today’s final rule includes a test
room ambient temperature specification
of 75 ± 5 °F for both water-heating and
non-water heating clothes washers. The
amended test procedure does not adopt
the test room ambient temperature range
specified in IEC Standard 62031
(Second Edition) for standby and off
mode testing.
6. Power Supply and Power Measuring
Instruments
In the August 2011 SNOPR, DOE
proposed to incorporate by reference the
power supply and power-measuring
instrument specifications in section 4,
paragraphs 4.3 and 4.4 of the Second
Edition. Specifically, paragraph 4.3.2
requires that the value of the harmonic
content 7 of the voltage supply be
recorded during the test and reported.
Paragraph 4.4.1 requires the crest factor
and maximum current ratio (MCR) to be
determined. The value of MCR
determines the maximum permitted
uncertainty for the power measurement.
Paragraph 4.4.3 requires the instrument
to be capable of measuring the average
power or integrated total energy
consumption over any operator-selected
time interval.
As described in the August 2011
SNOPR, DOE believes that the test
burden associated with the additional
measurements and calculations in the
Second Edition is offset by the more
reasonable requirements for testing
equipment, while maintaining
acceptable measurement accuracy. DOE
also proposed in the August 2011
SNOPR for it to be acceptable to
measure the total harmonic content,
crest factor, and MCR before and after
the actual test measurement if the
power-measuring instrument is unable
to perform these measurements during
the actual test measurement.
AHAM, ALS, Whirlpool, and NEEA
support DOE’s proposed interpretation
to allow measurement of the total
harmonic content, crest factor, and
maximum current ratio before and after
the actual test measurement if the
power-measuring instrument is unable
to perform these measurements during
the actual test measurement. (AHAM,
No. 24 at p. 2; ALS, No. 22 at p. 1;
NEEA, No. 26 at p. 2; Whirlpool, No. 27
at p. 1) Whirlpool added that individual
manufacturers should decide whether to
measure these parameters during the
test, and that measuring the power
7 As defined in the Second Edition, harmonic
content (or total harmonic content) is equivalent to
total harmonic distortion (on an amplitude, not
power, basis; i.e., using the square root of the
squares of the RMS voltages of the harmonics in the
numerator).
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parameters during the test would
require some manufacturers to purchase
new test equipment. Whirlpool believes
that such economic burden should not
be placed on manufacturers where an
appropriate alternative exists. Whirlpool
also commented that these test
provisions should not be applicable
until the effective date of appendix J2.
(Whirlpool, No. 27 at p. 1).
DOE noted in the August 2011
SNOPR that performing the continuous
linear regression analysis required by
the sampling method in the Second
Edition may require the use of data
acquisition software with the capability
of performing real-time data analysis.
DOE requested comment on the
potential test burden for a laboratory
that would be required to upgrade its
data acquisition system software to
enable real-time data analysis
capabilities.
AHAM stated that few laboratories
currently have the real-time statistical
analysis capabilities that DOE believed
would be required to perform the
continuous linear regression analysis of
the stable, non-cyclic power test. AHAM
added that several laboratories will need
to invest both time and money to add
a real-time statistical analysis capability
to their data acquisition systems. AHAM
further stated that updating data
acquisition systems to enable real-time
statistical analysis capabilities will
require a significant upgrade. Whirlpool
opposes the requirement to perform
real-time statistical analysis because
that such a requirement could require a
significant capital investment by
manufacturers. In addition, Whirlpool
stated that the phrase ‘‘real-time
statistical analysis’’ is vague and would
require clarification if it were to be
implemented. ALS stated that it has
already equipped its lab to measure
standby power per IEC Standard 62301
(First Edition) and understands that
only a minimal software update expense
would be needed to comply with the
Second Edition. (AHAM, No. 24 at p. 2;
ALS, No. 22 at p. 1; Whirlpool, No. 27
at p. 1).
After further testing and examination
of the sampling method described in the
Second Edition, DOE has determined
that the analyses required by the
sampling method could be performed
without the need for real-time data
analysis software. For example, a
laboratory could acquire data for a
discreet period of time and determine
afterward whether the data satisfied the
appropriate stability criteria. If these
criteria were not satisfied, the laboratory
could resume testing for a longer
discrete period of time, followed by
analysis of the data, and so on, until the
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stability criteria are satisfied. Therefore,
a manufacturer or test laboratory could
conduct standby and off mode testing
using the sampling method in the
Second Edition without being required
to upgrade its software with real-time
data analysis capabilities. DOE notes,
however, that having such real-time
data analysis capabilities would
facilitate this testing.
In today’s final rule, DOE specifies the
use of the power supply and powermeasuring instrument specifications in
section 4, paragraphs 4.3.2 and 4.4 of
the Second Edition. The amended test
procedure also includes notes in section
2.2.2 (supply voltage waveform) and
section 2.5.3 (power meter) stating that
if the power-measuring instrument used
for testing is unable to measure the total
harmonic content, crest factor, power
factor, or maximum current ratio during
the measurement period, it is acceptable
to measure and record these properties
immediately before and after the test
measurement period.
7. Calculation of Energy Consumption
in Each Mode
In the September 2010 NOPR, DOE
proposed two possible approaches for
measuring energy consumption in
modes other than active washing mode;
i.e., inactive (standby) mode, off mode,
delay start mode, and cycle finished
mode 8 (hereafter, collectively referred
to as low-power modes). For the first
approach, DOE proposed allocating 295
hours per year to the active washing
mode, 16 hours to self-clean mode (if
applicable), 25 hours per year to delay
start mode (if applicable), 15 hours per
year to cycle finished mode (if
applicable), and the remainder to off
and/or inactive mode. Using this
approach, the energy use per cycle
associated with inactive, off, delay start,
and cycle finished modes would be
calculated by (1) calculating the product
of wattage and allocated hours for all
possible inactive, off, delay start and
cycle finished modes; (2) summing the
results; (3) dividing the sum by 1,000 to
convert from Wh to kWh; and (4)
dividing by the proposed 295 use cycles
per year. For clothes washers with
electronic controls and a mechanical
on/off switch, DOE proposed to allocate
half of the inactive/off mode hours each
to inactive and off modes.
For the second ‘‘alternate approach,’’
for the purpose of calculating the total
energy consumed in all low-power
modes, DOE proposed allocating all the
hours not associated with active
8 Self-clean mode, delay start mode, and cycle
finished mode are considered part of the active
mode.
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washing mode to the inactive and off
modes and then measuring power
consumption for the inactive and off
modes. Using this approach, separate
measurements of delay start and cycle
finished mode energy consumption
would not be required. This approach
would allocate one hour to each active
mode cycle, for a total of 295 active
mode hours and 8,465 inactive/off mode
hours. For clothes washers with
electronic controls and a mechanical
on/off switch, half of the inactive/off
mode hours would be allocated each to
inactive and off modes. DOE proposed
using the alternate approach in the
August 2011 SNOPR.
ALS commented that it supports
DOE’s proposal to allocate one hour to
each active mode cycle. ALS also
supports DOE’s proposal to allocate half
of the inactive/off hours each to inactive
and off modes, for machines with
electronic controls plus a mechanical
on/off switch. (ALS, No. 10 at p. 2).
The Joint Commenters and ASAP
support allocating a portion of the
inactive/off hours to off mode for
clothes washers with a mechanical on/
off switch because of the potential
energy-saving benefits that allow the
consumer to reduce the energy
consumption of the washer when not in
use. The Joint Commenters and ASAP
are concerned, however, about the lack
of a specification regarding where the
switch must be placed on the machine
in order to receive credit. For example,
a manufacturer could place a switch in
a hidden location such as the back of
the machine, where it would obviously
not be intended for consumer use. (Joint
Commenters, No. 16 at p. 4; ASAP,
Public Meeting Transcript, No. 20 at p.
82) The Joint Commenters encourage
DOE to specify that the switch must be
placed on the front panel of the machine
in order for half of the inactive/off mode
hours to be allocated to off mode. (Joint
Commenters, No. 16 at p. 4).
NEEA supports DOE’s proposed
alternate approach, with the caveat that
delay start and cycle finished modes
should be measured and included as
part of the active wash mode. NEEA
does not support DOE’s proposal for
using a one-hour average cycle time to
determine annual active wash mode
hours. NEEA stated that DOE’s estimate,
which was based on the behavior of a
very limited sample of clothes washers,
characterizes the behavior and energy
use of the ‘‘average’’ clothes washer
available in the market today, rather
than measuring the actual performance
of individual models. NEEA stated that
the active washing mode hours should
be based on the test results of the
individual clothes washer model being
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tested. NEEA further commented that
the energy use calculation could be
greatly simplified if the calculation
simply involved ‘‘active mode’’ and
‘‘inactive mode hours,’’ as measured for
each model tested. Furthermore, NEEA
does not support DOE’s proposal to
create a new class of modes called ‘‘lowpower modes,’’ and stated that delay
start and cycle finished modes should
only be considered part of active mode
and/or active washing mode. (NEEA,
No. 12 at pp. 6–7; NEEA, No. 26 at pp.
2, 4, 6).
Whirlpool commented that it does not
support DOE’s proposal to split the nonactive mode hours in half between
inactive and off modes for washers with
a mechanical or hard on/off switch.
Whirlpool stated that such a device
would add little benefit compared to its
additional cost. Further, consumers are
unlikely to utilize such a device unless
it automatically defaults to the ‘‘off’’
mode at the end of each cycle (requiring
the consumer to turn it to ‘‘on’’ for each
new cycle initiated). According to
Whirlpool, such an approach would be
an annoyance to consumers and would
cause consumers to postpone
replacement purchases, thereby
negating or delaying the resultant
energy savings. Whirlpool stated that for
any washer with a mechanical on/off
switch, all of the non-active hours
should be allocated to inactive mode.
(Whirlpool, No. 13 at p. 4).
AHAM commented that it does not
oppose using the estimate of one hour
per cycle because it would be too
burdensome and complicated to
determine a more refined number, and
there would be little corresponding
benefit in accuracy. (AHAM, No. 14 at
p. 7) AHAM also commented that it
does not oppose DOE’s proposal to
allocate half of the inactive/off hours
each to inactive and off modes for
clothes washers with electronic controls
plus a mechanical on/off switch. AHAM
proposed that DOE add a requirement
that the on/off switch must be accessible
by the consumer, because a switch that
is hidden such that the consumer might
never find or use it should not be given
this ‘‘credit.’’ AHAM further
commented that this does not mean that
DOE should specify product design by
dictating where the switch should be
placed on the machine. Furthermore,
AHAM stated that there may be
situations that warrant allocating all of
the inactive/off hours to off mode; for
example, there are machines that
electronically turn off certain modes at
the end of the active wash cycle and
require the consumer to manually turn
that mode back on to use it. (AHAM,
No. 14 at p. 8).
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DOE based its proposal to adopt an
estimate of one hour per active mode
wash cycle on the test data available.
DOE concurs with AHAM’s comment
that performing additional testing to
determine a more refined number would
be too burdensome and complicated,
with little corresponding benefit in
overall accuracy. Basing the active
washing mode hours on test results of
the individual clothes washer model
being tested would not be feasible
because the energy test cycle includes
numerous different wash cycles, each
with a different cycle time. Calculating
the average cycle time across all cycles
for an individual washer would increase
test burden with little or no
corresponding increase in the accuracy
of the results. Therefore, today’s final
rule allocates one hour to each active
mode cycle, with 8,465 hours allocated
to all other non-active mode cycles.
As described previously in section
III.B.2, DOE adopts the ‘‘alternate
approach,’’ in today’s final rule, in
which all low-power modes are
allocated to the inactive and off modes,
depending on which of these modes is
present. The aggregate power of the lowpower modes is represented by a single
energy metric called ‘‘combined lowpower mode.’’ DOE’s analysis indicates
that the assumption that the power in
each low-power mode is similar, which
DOE set forth in the September 2010
NOPR, remains valid, and that
measuring the power of each mode
separately would introduce significant
test burden without a corresponding
improvement in a representative
measure of annual energy use.
Regarding the allocation of hours
between inactive mode and off mode,
the proposed definition of off mode as
applied to residential clothes washers
will primarily apply to units with
mechanical controls. The proposed
definition of inactive mode will
primarily apply to units with electronic
controls, in which reactivation of the
clothes washer occurs through a
pushbutton sensor, touch sensor, or
other similar device that consumes
power. DOE is not aware of any clothes
washers on the market with electronic
controls and an additional mechanical
on/off switch. However, DOE believes
that the test procedure should
accommodate this option because of the
potential energy-saving benefits
provided by a mechanical on/off switch.
DOE further notes that for units with all
hours allocated to either inactive or off
mode, the power measurement
procedure and calculation of low-power
mode energy consumption are identical.
For these reasons, DOE adopts the
proposal in the August 2011 SNOPR,
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which allocates 8,465 hours to off mode
if no inactive mode is possible, 8,465
hours to inactive mode if no off mode
is possible, and 4,232.5 hours to both
inactive mode and off mode if both
modes are possible.
DOE believes that manufacturers
would be unlikely to install a
mechanical on/off switch in an
inaccessible location, because such a
device would add little consumer
benefit compared to its additional cost
to the manufacturer. Therefore, today’s
final rule does address the location for
an on/off switch.
8. Integrated Modified Energy Factor
(IMEF)
The DOE test procedure for clothes
washers currently provides a calculation
for modified energy factor (MEF), which
equals the clothes container capacity in
cubic feet divided by the sum,
expressed in kWh, of (1) the total
weighted per-cycle hot water energy
consumption, (2) the total weighted percycle machine electrical energy
consumption, and (3) the per-cycle
energy consumption for removing the
remaining moisture from a test load.
(See section 4.4 of appendix J1). The
current Federal energy conservation
standards for clothes washers are
expressed in MEF. (10 CFR 430.32(g)(3))
As described previously in section
I.C, EISA 2007 amended EPCA to
require DOE to amend its test
procedures for all covered products to
integrate measures of standby mode and
off mode energy consumption into the
overall energy efficiency, energy
consumption, or other energy descriptor
unless the current test procedure
already incorporates standby and off
mode energy consumption, or such
integration is technically infeasible.
In the September 2010 NOPR, DOE
proposed to establish an ‘‘integrated
modified energy factor’’ (IMEF) for
residential clothes washers. DOE
proposed to calculate IMEF as the
clothes container capacity in cubic feet
divided by the sum, expressed in kWh,
of:
• The total weighted per-cycle hot water
energy consumption;
• The total weighted per-cycle machine
electrical energy consumption;
• The per-cycle energy consumption for
removing moisture from a test load;
• The per-cycle standby, off, delay start,
and cycle finished mode energy
consumption; and
• The per-cycle self-clean mode energy
consumption, as applicable.
In the August 2011 SNOPR, DOE
proposed not to allocate the hours for
delay start and cycle finished modes to
the inactive and off modes, and not
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require separate measurements for delay
start and cycle finished mode energy
consumption. Therefore, DOE modified
the proposed IMEF calculation by
incorporating per-cycle combined lowpower mode energy consumption
instead of separate measurements of
per-cycle standby, off, delay start and
cycle finished mode energy
consumption.
NEEA and the California Utilities
support the IMEF calculation proposed
in the September 2010 NOPR. (NEEA,
No. 12 at p. 8; California Utilities, No.
18 at p. 2) The California Utilities
further commented that although the
low-power modes represent a relatively
small portion of annual energy and
water use, they should be measured in
the test procedure because these loads
will become an increasingly significant
portion of overall energy use as clothes
washers and other appliances make
efficiency gains in their primary active
mode. (California Utilities, No. 18 at p.
2).
ALS opposes the IMEF calculation
proposed in the September 2010 NOPR,
which separates out per-cycle standby,
off, delay start, and cycle finished mode
energy consumption. ALS noted that
there is little public benefit to including
these modes, and that DOE has no
reliable consumer use data on which to
base the calculations. ALS stated there
is no need for a new IMEF metric. (ALS,
No. 10 at p. 2).
AHAM also objected to the new IMEF
measure of energy consumption due to
the significant time, resource, and cost
impacts associated with it. AHAM also
stated that the added test burden
provides no corresponding public
benefit. (AHAM, No. 14 at p. 8).
NRDC questioned DOE’s decision to
retain a metric based on a per-cycle
measure rather than an annual metric,
such as for dishwashers. (NRDC, Public
Meeting Transcript, No. 20 at pp. 91–
92).
DOE determined in the September
2010 NOPR that it is technically feasible
to integrate standby mode and off mode
energy consumption into the overall
energy consumption metric for clothes
washers, which for the current energy
conservation standards is based on the
per-cycle MEF.
The current test procedure does not
provide an additional energy descriptor
for annual energy consumption. Any
new descriptor for annual energy
consumption would be based on the
same per-cycle energy use
measurements from which MEF or IMEF
is calculated, multiplied by the number
of annual use cycles; therefore, an
annual energy use metric incorporating
standby and off mode energy use would
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not be inherently more accurate or
representative than MEF or IMEF. The
analogous change from a per-cycle
metric to annual energy use for the
energy conservation standards for
dishwashers was required by Congress
in the provisions of EISA 2007.
As described in section III.B.2.d, this
final rule does not adopt a definition for
a self-clean cycle and is not adding any
provisions to the test procedure for
measuring the energy and water
consumption of a self-clean cycle.
Today’s final rule also implements the
alternate approach for measuring energy
consumption in low-power modes.
Therefore, today’s final rule calculates
IMEF as the clothes container capacity
in cubic feet divided by the sum,
expressed in kWh, of:
• The total weighted per-cycle hot water
energy consumption;
• The total weighted per-cycle machine
electrical energy consumption;
• The per-cycle energy consumption for
removing moisture from a test load; and
• The per-cycle combined low-power
mode energy consumption.
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C. Active Mode Test Procedure
Provisions
1. Integrated Water Consumption Factor
(IWF)
The existing calculation of water
factor (WF) in the appendix J1 test
procedure accounts only for the water
consumed during the cold wash/cold
rinse cycle. Hot water consumption is
measured for all wash cycles, including
warm, hot, and extra-hot washes, but it
is used only to determine the energy
needed to heat the water. If the cold
wash water consumption is set
disproportionately low, while more
water is used at higher temperatures, the
WF metric may not accurately reflect
the average water consumption of the
machine.
In the September 2010 NOPR, DOE
proposed a new water consumption
metric, integrated water consumption
factor (IWF). This proposed metric
would account for both the hot and cold
water consumption of each test cycle,
including any steam or self-clean cycles.
As proposed, IWF would equal the sum
of the total weighted per-cycle water
consumption for all wash cycles and the
per-cycle self-clean water consumption,
divided by the clothes container
volume. As proposed, the total weighted
per-cycle water consumption for all
wash cycles would be calculated as the
TUF-weighted sum of the total per-cycle
water consumption for each test cycle.
In the August 2011 SNOPR, DOE
proposed a correction to the calculation
for per-cycle self-clean water
consumption. The proposed
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calculations in the newly-proposed
sections 4.1.8 (per-cycle self-clean hot
water energy consumption) and 4.2.14
(total per-cycle self-clean water
consumption) did not contain the
numeric multipliers required to
apportion the total annual self-clean
water consumption over the 295
representative average number of
clothes washer cycles in a year. The
August 2011 SNOPR proposal adjusted
the calculations in section 4.1.8 and
4.2.14 by including a multiplier of 12/
295, where 12 represents the average
number of clothes washer self-clean
cycles in a year, and 295 represents the
average number of clothes washer cycles
in a year.
ALS, the Joint Commenters, and
NEEA expressed support for the
proposal to measure water consumption
for all active mode energy test cycles as
part of the IWF metric. NEEA also
supported DOE’s proposed use of TUFs
and load usage factors to derive the
active mode water consumption. (ALS,
No. 10 at p. 4; Joint Commenters, No. 16
at p. 8; Joint Commenters, No. 23 at p.
5; NEEA, No. 12 at p. 13) AHAM, the
California Utilities, and Whirlpool
specifically stated support for the
inclusion in an IWF metric of hot and
cold water measurements from all
cycles tested. AHAM and the Joint
Commenters noted that those values are
already measured as part of the test
procedure, and thus would not add to
test burden. NEEA similarly commented
that the proposed methodology for IWF
would not add significant new test
burden on manufacturers. Whirlpool
stated that the proposal to include all
water usage would prevent
manufacturers from varying the amount
of rinse water used at different
temperatures, and that this would
justify any additional test burden.
(AHAM, No. 14 at p. 15; California
Utilities, No. 18 at p. 5; Joint
Commenters, No. 16 at p. 8; NEEA, No.
12 at p. 13; Whirlpool, No. 13 at p. 13)
BSH stated that if the standards are
adjusted appropriately, cold water
consumption from all tests can be used
in calculations. (BSH, No. 17 at p. 4)
NRDC agreed with the IWF in concept.
(NRDC, Public Meeting Transcript, No.
20 at pp. 182–183) The California
Utilities and NEEA support the
inclusion of water use from self-clean
cycles in the IWF measurement.
(California Utilities, No. 18 at p. 5;
NEEA, No. 12 at p. 13) The Joint
Commenters stated that DOE’s proposal
would provide a more representative
depiction of water consumption. (Joint
Commenters, No. 16 at p. 8).
AHAM, ALS, and Whirlpool do not
support including the water use in self-
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clean cycles in the IWF metric. AHAM
agrees, however, with the proposed
correction to adjust the calculation
using a multiplier of 12/295, if DOE
determines that self-clean cycles should
be included in the energy and water
calculations. ALS also opposes the
inclusion of water use in steam cycles
in IWF. ALS stated that until DOE has
a reliable understanding of the
consumer usage and water consumed in
self-clean and steam cycles, it should
not include these in the test procedure.
(AHAM, No. 14 at p. 15; AHAM, No. 24
at p. 5; ALS, No. 10 at pp. 4–5;
Whirlpool, No. 13 at p. 13) According to
BSH, inclusion of self-clean and steam
cycles in the test procedure would lead
to minimal improvement in IWF but
would increase the test burden. (BSH,
No. 17 at p. 3).
As described in sections III.B.2.d,
III.C.2.a and III.C.2.b, DOE did not adopt
provisions for measuring the water and
energy consumption of self-clean cycles
or steam cycles. In today’s final rule,
DOE includes an integrated water factor
(IWF) metric that is based on the total
weighted per-cycle water consumption
of both hot and cold water for all wash
cycles comprising the energy test cycle.
Because these values are already
measured as part of the test procedure,
and no new test equipment would be
required to measure these values,
manufacturer test burden would not
increase. DOE believes that an IWF
defined in this way provides a more
representative measure of total water
consumption for a clothes washer.
2. Technologies Not Covered by the
Current Test Procedure
Steam Wash Cycles
DOE is aware of multiple clothes
washer models currently available on
the market offering steam functions via
pre-set cycles, or as an optional addition
to conventional wash cycles. During
these cycles, steam is injected into the
basket, which manufacturers claim
provides enhanced cleaning and/or
sterilization. The steam is produced in
a generator that requires a significant
amount of energy to heat and vaporize
the water. The current clothes washer
test procedure does not account for
energy or water consumption during
this type of wash cycle.
In the September 2010 NOPR, DOE
proposed amending the test procedure
to include additional measurement of
energy and water consumption during a
steam wash cycle for clothes washers
offering this feature. In the proposed
amendments, an additional set of steam
cycle tests would be required for clothes
washers that offer such a feature. The
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test sections required for clothes
washers without a steam wash cycle
would remain unchanged.
DOE also proposed in the September
2010 NOPR to include the energy and
water consumption from steam wash
cycles in the final calculations for the
energy and water use metrics. For
clothes washers capable of steam wash
cycles, the measurements of energy and
water consumption from the steam wash
cycle with the hottest wash temperature
would be included in the overall energy
and water use calculations, based on the
TUF for steam wash. Table 4.1.1
(Temperature Use Factors) of appendix
J1 specifies the current weighting factor
applied to the consumption
measurements for the different wash
cycles. DOE proposed to update Table
4.1.1 to include 0.02 as the TUF of a
steam wash cycle, when available. DOE
assumed these cycles would decrease
the use of extra-hot cycles, but would
leave the use of hot, warm, and cold
cycles unchanged. DOE believed that
the steam wash cycles would be
selected somewhat fewer times than the
extra hot cycle because on some models
steam is available as an option only on
certain settings. DOE therefore
estimated that the 0.02 TUF associated
with steam washes would correspond to
a 0.02 decrease in the TUFs associated
with extra-hot cycles, for a steamcapable clothes washer.
The California Utilities, the Joint
Commenters, and NEEA expressed
qualified support for DOE’s proposal to
include the energy and water use of
steam wash cycles in the test procedure,
and raised concerns about the definition
of ‘‘steam wash cycle.’’ The California
Utilities and NEEA commented that
DOE may need to refine the definition
of steam wash cycle for clarity and
consistency. The Joint Commenters
stated that the definition of ‘‘steam wash
cycle’’ should include not only the
injection of ‘‘steam’’ (vaporized water)
but also any superheated water injected
in the form of mist or fine droplets. The
Joint Commenters also stated that all
energy and water use resulting from
steam wash cycles should be accounted
for, including any injections made after
the conclusion of the final spin cycle.
(California Utilities, No 18 at p. 3; Joint
Commenters, No. 16 at p. 3; Joint
Commenters, No. 23 at pp. 4–5; NEEA,
No. 12 at p. 9; NEEA, No. 26 at pp. 7–
8) NEEA suggested that DOE gather data
on steam cycles to more clearly define
what constitutes a steam cycle. (NEEA,
No. 12 at p. 9; NEEA, No. 26 at p. 8).
AHAM, ALS, BSH, and Whirlpool
oppose adding measures of the energy
and water consumption of steam wash
cycles to the clothes washer test
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procedure without sufficient data on
consumer usage patterns of such cycles.
(AHAM, No. 14 at p. 9; ALS, No. 10 at
p. 3; BSH, No. 17 at p. 3; Whirlpool, No.
13 at p. 5) ALS, BSH, and Whirlpool
also oppose the inclusion of steam wash
cycles due to the added manufacturer
test burden, particularly because the
energy use in these cycles represents
such a small amount of the total annual
energy. Whirlpool commented that the
test burden would increase by about
10 percent. (ALS, No. 10 at p. 3; BSH,
No. 17 at p. 3; Whirlpool, No. 13 at p.
5) AHAM and Whirlpool also noted that
DOE does not have data on the
percentage of clothes washers on the
market with a steam feature. Whirlpool
estimates that this percentage is likely
in the single digits. (AHAM, No. 14 at
p. 9; Whirlpool, No. 13 at p. 5;
Whirlpool, Public Meeting Transcript,
No. 20 at pp. 102–103) BSH further
opposes the inclusion of steam wash
cycles in the energy and water test
methods because the longevity of these
features in the market has yet to be
proven. (BSH, No. 17 at p. 3).
GE and LG also commented that DOE
needs to clarify the definition of steam
wash cycle. GE suggested modifying the
definition of steam cycle as: ‘‘Steam
cycle means a wash cycle in which
water is heated to the point of boiling
to produce steam and in which that
steam is injected into the clothes
container.’’ (GE, Public Meeting
Transcript, No. 20 at p. 104; GE, No. 35
at p. 2; LG, Public Meeting Transcript,
No. 20 at p. 103).
AHAM questioned whether a
definition of steam wash cycle would
include a required temperature to which
water must be heated for steam to be
generated in the cycle, a representative
duration of time for which steam must
be injected into the drum, and a
definition of the term ‘‘injected’’.
AHAM stated that it would be difficult
to define ‘‘steam wash cycle’’ in a clear,
repeatable, reproducible, and uniformly
applicable way. According to AHAM,
without a better definition of steam
wash cycle, there will be confusion
among manufacturers, which will lead
to confusion in the market as consumers
attempt to compare products. (AHAM,
No. 14 at pp. 9–10) Springboard
Engineering (Springboard) requested
clarification as to whether steam would
be tested at the hottest temperature
available in the ‘‘normal’’ cycle, or
whether it would be tested at the hottest
temperature available on any cycle,
such as a sanitize cycle. Springboard
also noted that some clothes washers
have cycles with wash temperatures
greater than 135°F and steam, and stated
that it is not clear how these cycles
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should be tested. (Springboard, No. 11
at pp. 2–3).
DOE also received comments in
response to the proposed TUF for steam
wash cycles. AHAM, ALS, NEEA, and
Whirlpool do not support DOE’s
proposed steam wash cycle TUF.
AHAM stated that because it does not
support the inclusion of steam wash
cycles in the DOE test procedure, it also
opposes the revision of the TUFs to
account for steam wash cycles. AHAM
also questioned the assumption that the
steam wash cycle TUF affects only the
extra-hot TUF. (AHAM, No. 14 at p. 12)
Similarly, NEEA questioned the basis on
which DOE assumed that a steam wash
cycle would mostly or always be
associated with a hot wash cycle.
According to NEEA, some consumers
use a hot or extra-hot wash to kill dust
mites and other allergens, not just for
heavily soiled loads, and it is not clear
whether such users would select a
cooler wash cycle with a steam feature
to accomplish the same thing. ALS,
NEEA and Whirlpool objected to DOE’s
assignment of a TUF for steam wash
cycles without supporting data. (ALS,
No. 10 at p. 4; NEEA, No. 12 at p. 9;
NEEA, No. 26 at p. 8; Whirlpool, No. 13
at pp. 5, 8) Whirlpool also stated that
the usage of steam wash cycles is quite
limited, since they are specialized
cycles designed for removal of difficult
stains. (Whirlpool, No. 13 at pp. 5, 8)
Springboard questioned whether there
are machines on the market that have a
steam wash cycle but do not have a hot
wash cycle. (Springboard, No. 11 at
p. 3).
DOE notes that the implementation of
‘‘steam cycles’’ may vary among
manufacturers, and that the proposed
definition may lead to inconsistent
interpretations of whether a certain
feature constitutes a ‘‘steam cycle’’ to be
included in the energy test cycle. In
addition, consumer usage of steam
features is likely to be low. For these
reasons, DOE does not adopt provisions
to measure the energy and water use in
steam wash cycles, and therefore is not
amending the TUFs in the clothes
washer test procedure to include a TUF
for steam wash cycles that would occur
in place of certain extra-hot wash
cycles.
Self-Clean Cycles
DOE is aware that some residential
clothes washers currently on the market
offer a self-clean cycle. These cycles are
used periodically with bleach and/or
detergent—but no clothes load—to
clean, deodorize, or sanitize the
components that come into contact with
water by preventing or eliminating the
formation of mold, bacteria, and
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mildew. Self-clean cycles may require
higher water temperatures and greater
volumes of water than a normal cycle,
and therefore could potentially consume
a substantial amount of energy. The
current test procedure does not account
for energy or water consumption
attributable to self-clean cycles.
As described previously in section
III.B.2.d, DOE proposed in the
September 2010 NOPR to define a ‘‘selfclean mode’’ as a clothes washer
operating mode that:
• Is dedicated to cleaning, deodorizing, or
sanitizing the clothes washer by eliminating
sources of odor, bacteria, mold, and mildew;
• Is recommended to be run intermittently
by the manufacturer; and
• Is separate from clothes washing cycles.
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As described in the September 2010
NOPR, DOE observed that
manufacturers typically recommended
running a self-clean cycle once a month.
Some manufacturers also recommend a
self-clean cycle after a defined number
of clothes washing cycles. Because these
self-clean cycles are not accounted for
in the proposed 295 wash cycles per
year, DOE proposed to integrate the
energy and water consumption of selfclean cycles into the overall energy
efficiency metrics, under the
assumption that these cycles are
typically run once per month.
DOE received comments in response
to the proposal to account for energy
and water consumption of self-clean
cycles in the overall calculations for
IMEF and IWF, which are discussed in
III.B.2.d, III.B.8, and III.C.1. For the
reasons presented in those sections,
DOE is not adopting provisions in
today’s final rule to include measures of
self-clean energy and water use in the
clothes washer test procedure.
Adaptive Control Technologies
Adaptive control technologies can
adjust parameters such as agitation
intensity, number of rinses, wash time,
and wash and rinse temperatures based
on the size, fabric mix, and soil level of
a wash load. The current test procedure
accounts for adaptive fill technologies,
but no other types of adaptive controls.
DOE is aware that other consumer
products employ adaptive controls, and
that these are addressed in their
respective test procedures. For example,
many dishwashers incorporate adaptive
controls by means of a turbidity sensor
which adjusts the number and duration
of wash and rinse cycles. The
dishwasher test procedure accounts for
these models through the use of soiled
dishware loads. (10 CFR part 430,
subpart B, appendix C).
In the September 2010 NOPR, DOE
noted that it was not aware of any
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clothes washers available on the market
that incorporate adaptive controls using
a turbidity sensor. If clothes washers
become available that offer adaptive
controls using a turbidity sensor, DOE
could consider amending the clothes
washer test procedure to measure
energy and water consumption with a
soiled wash load. However, because it
was not aware of any clothes washers
incorporating this technology, DOE did
not propose to address adaptive controls
other than adaptive fill control in the
test procedure.
AHAM, BSH, NEEA, and Whirlpool
supported DOE’s proposal that no
adaptive control provisions other than
the existing adaptive fill control
methodology be adopted in the clothes
washer test procedure at this time.
(AHAM, No. 14 at p. 11; BSH, No. 17
at p. 4; NEEA, No. 12 at p. 9; NEEA, No.
26 at pp. 8–9; Whirlpool, No. 13 at p.
6) According to BSH and Whirlpool,
there are currently no clothes washers
on the market with soil-sensing
technology. (BSH, No. 17 at p. 4;
Whirlpool, No. 13 at p. 6) Whirlpool
stated that if a soil-sensing clothes
washer were to exist, it would require
some form of sensor, which in turn
would require a soiled test load to
activate the sensor and properly record
the energy used (analogous to the test
procedure for soil-sensing dishwashers).
According to Whirlpool, DOE would
need to develop a uniform, consistent,
repeatable, and reproducible soil load,
which could take 3 or more years.
(Whirlpool, No. 13 at p. 6) NEEA agreed
that turbidity sensors for soil-sensing
are unlikely to be found in clothes
washers, but the increasing complexity
of control capabilities should not be
ignored. NEEA urged DOE to gather
enough statistically valid data to inform
a decision on whether to adopt
provisions for measuring adaptive
control technologies. NEEA further
commented that, in the absence of
information on clothes washer models
with adaptive control technologies other
than adaptive fill control, DOE should
state how the presence of such
technologies might affect the test
procedure results. (NEEA, No. 12 at pp.
9–10; NEEA, No. 26 at pp. 8–9).
DOE observes that manufacturers
representing approximately 65 percent
of the U.S. clothes washer market stated
that they are unaware of soil-sensing
clothes washers currently available,
supporting DOE’s preliminary
conclusion. For this reason, DOE is
unable to evaluate any technical
approaches towards adaptive control
outside of adaptive fill control, nor can
it develop appropriate methodology for
evaluating the energy use of such
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features. Therefore, DOE is not adopting
new provisions addressing adaptive
control technologies in today’s final
rule.
Demand Response Technologies
Demand response technology enables
an appliance to shift its activity based
on interaction with the electric grid,
utilities, or user programming.
Appliances that can communicate with
the electric grid or any other network
would be considered to have a network
mode as defined by IEC Standard 62301
Second Edition. As described
previously in section III.B.2.g, the
Second Edition defines network mode
as a mode category that includes ‘‘any
product modes where the energy using
product is connected to a mains power
source and at least one network function
is activated (such as reactivation via
network command or network integrity
communication) but where the primary
function is not active.’’ IEC Standard
62301 Second Edition also provides a
note stating, ‘‘[w]here a network
function is provided but is not active
and/or not connected to a network, then
this mode is not applicable. A network
function could become active
intermittently according to a fixed
schedule or in response to a network
requirement. A ‘network’ in this context
includes communication between two
or more separate independently
powered devices or products. A network
does not include one or more controls
which are dedicated to a single product.
Network mode may include one or more
standby functions.’’
As discussed in section III.B.2.g, DOE
did not propose in the September 2010
NOPR to amend the clothes washer test
procedure to include any provisions for
measuring energy consumption in
network mode, because it was unaware
of any clothes washers currently
available on the market that incorporate
a networking function. Additionally,
DOE was unaware of any data regarding
network mode in clothes washers that
would enable it to determine
appropriate testing procedures and
mode definitions for incorporation into
the test procedure.
AHAM commented that there is
currently insufficient data regarding
demand response features in clothes
washers, but that when these features
become available, DOE should address
them in the test procedure. AHAM
noted that it is currently working with
energy and water efficiency advocates to
develop a definition of ‘‘smart
appliances,’’ including a definition of
‘‘smart’’ clothes washers. (AHAM, No.
14 at p. 11; AHAM, Public Meeting
Transcript, No. 20 at p. 109) NEEA
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doubted whether any significant
fraction of laundry activities take place
at peak hours, and thus it is skeptical
whether households would shift their
laundry schedules in response to timeof-use rates or a signal from a ‘‘smart
grid’’ system. Even so, NEEA supported
including provisions for network mode
in the clothes washer test procedure for
use when machines with such
capabilities appear on the market.
(NEEA, No. 12 at p. 10).
For the reasons stated in the
September 2010 NOPR, this final rule
does not incorporate provisions for
clothes washers with demand response
technologies. However, DOE is generally
supportive of efforts to develop smartgrid and other network-enabled
technologies in clothes washers.
Provisions for testing power
consumption in network mode could be
incorporated into the test procedure
through future amendments, once the
appropriate data and testing
methodologies become available.
3. Consumer Usage Patterns
In the September 2010 NOPR and
August 2011 SNOPR, DOE proposed
updating some of the consumer usage
patterns contained in the test procedure.
General comments on the proposals are
discussed immediately below, and
comments related to the specific
consumer usage patterns for which DOE
proposed changes are discussed in the
sections that follow.
AHAM commented generally that
DOE should gather or develop
information on contemporary laundry
practices in the United States for
incorporation into the test procedure,
including temperature settings, average
cycles per year, special-purpose
machine cycles (such as steam and selfclean), the size of a minimum laundry
load, the size of an average load, and the
frequency distribution of various
laundry loads. (AHAM, No. 2 at p. 23;
AHAM, No. 14 at pp. 1–2). EarthJustice
and NRDC support this
recommendation. (EarthJustice, No. 3 at
p. 1; NRDC, No. 8 at p. 1) Whirlpool
stated that a test procedure proposal
would not be valid, meaningful, or
representative of consumer practices
without data to validate the underlying
assumptions. Whirlpool requests that
DOE accept input from manufacturers
and/or initiate primary research efforts
of its own to obtain updated consumer
usage data, as necessary. (Whirlpool,
No. 13 at p. 1).
NEEA commented that, because the
revised test procedure will not be
required for use before the effective date
of any revised efficiency standards, DOE
should take the time now to acquire
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enough statistically valid data to
properly specify the usage patterns and
calculations within the test procedure.
(NEEA, No. 12 at pp. 1, 10, 16) NEEA
added that DOE should consider more
systematic efforts to gather field data in
advance of the start of future
rulemakings where test procedure
changes are expected. (NEEA, No. 31 at
p. 3) NEEA commented that it is
currently gathering field data on the
laundry habits from households
participating in the Residential Building
Stock Assessment, expected to be
complete by mid-2013. By June 2012,
field data on clothes washer and dryer
energy use, the nature and size of
laundry loads, washer and dryer cycle
choices, and number of cycles per year
will become available. (NEEA, No. 31 at
p. 2).
NEEA also stated that it believes DOE
is moving toward a test procedure that
delivers performance results for an
‘‘average’’ product, rather than the
specific clothes washer models being
tested. NEEA believes that this approach
would undermine the basic intent of the
test procedure and the standards, which
it believes should reasonably reflect
energy and water use for each model.
(NEEA, No. 12 at pp. 1–2).
DOE is aware of ongoing and future
planned field studies by DOE and other
parties, which are expected to provide
relevant data regarding current
consumer usage patterns. DOE will
consider any relevant data resulting
from these studies in future test
procedure rulemakings.
Number of Annual Wash Cycles
In the January 2001 standards Final
Rule, DOE estimated the representative
number of annual wash cycles per
clothes washer as 392. This number is
not used in the calculations for the
current energy efficiency metric,
because MEF is calculated on a percycle basis. To include energy
consumption from modes other than
active washing mode in the energy
efficiency metric requires an estimate of
the time a typical clothes washer spends
in active washing and all other nonactive washing modes. The number of
annual wash cycles is used to determine
the time spent in the active washing
mode, and also determines the
remaining time to be allocated to the
other possible modes.
In the September 2010 NOPR, DOE
proposed 295 as the representative
number of wash cycles per year, based
on the 2005 Residential Energy
Consumption Survey (RECS) data. DOE
determined preliminarily that this was a
more representative value than the
results of the California Residential
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Appliance Saturation Survey (California
RASS), which indicated 283 annual
cycles, because the RECS survey was
nationwide rather than limited to a
single state. DOE also made a
preliminary determination that the 2005
RECS value was more representative of
average use than the value based on a
Procter & Gamble (P&G) study, which
indicated 308 annual cycles, due to the
household size distributions of the data
sets. Overall, however, the relatively
small variation among the three
estimates of annual clothes washer
cycles supported DOE’s conclusion that
295 cycles per year was a reasonable
value to include in its clothes washer
test procedure.
DOE received multiple comments in
response to the proposed value of 295
annual cycles. ALS, the Joint
Commenters, and Whirlpool support the
proposed number of annual cycles.
(ALS, No. 10 at p. 2; Joint Commenters,
No. 16 at pp. 4–5; Whirlpool, No. 13 at
p. 7) BSH also agrees with a value of 295
annual cycles, with the caveat that, if
DOE decides to include measurement of
self-clean energy and water use in the
test procedure, the number of annual
cycles will need to be adjusted upwards
by the number of self-clean cycles per
year suggested by the manufacturer in
the product’s user manual. (BSH, No. 17
at p. 4) ALS and AHAM questioned the
validity of the 2005 RECS data, and
requested that DOE work with P&G to
secure more recent data. AHAM stated
that P&G would be updating the clothes
washer use study based on 2010 data.
However, AHAM supports the proposed
295 annual cycles because it is likely
that the number of cycles has decreased
since the P&G data from 2005. (AHAM,
No. 14 at pp. 11–12; ALS, No. 10 at pp.
2–3) However, NEEA and the National
Institute of Standards and Testing
(NIST) noted that the RECS and P&G
data both dated from about 2005.
(NEEA, Public Meeting Transcript, No.
20 at p. 112; NIST, Public Meeting
Transcript, No. 20 at p. 112). Whirlpool
stated that 295 cycles per year is
consistent with the reduction in average
household size. (Whirlpool, No. 13 at p.
7) The Joint Commenters stated that
they had conducted their own analysis
using the 2005 RECS data, which also
resulted in an estimate of 295 annual
clothes washer cycles. The Joint
Commenters believe that the 2005 RECS
data provide a reasonably accurate value
in the absence of better data, and that
the 2005 RECS data, derived from a
national survey, are more representative
than the California RASS data that
captured usage from one state. (Joint
Commenters, No. 16 at pp. 4–5).
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NEEA objected to DOE’s proposal for
295 annual clothes washer use cycles
because NEEA believes that the 2005
RECS survey methods are flawed.
According to NEEA, the relatively large
bin sizes provided in the survey for the
number of laundry loads per week
introduces too much uncertainty
regarding the average weekly number
within each bin. NEEA further stated
that it would not automatically discount
California RASS data on the basis that
the survey represents only one state.
NEEA added, however, that it is not
familiar enough with the California
RASS data, and can not comment on the
suitability of using the data to determine
average annual use cycles. NEEA
commented that it supports using P&G
data due to P&G’s longtime work in this
area and the scope and detail in its
survey. NEEA’s interpretation of the
P&G data results in an estimate of 308
annual clothes washer use cycles, which
according to NEEA is similar to the
approximately 310 annual cycles
derived from recent data collected by
the California Public Utilities
Commission (CPUC). NEEA noted that
while the average household size in the
P&G sample is larger than those
indicated by the U.S. Census and the
American Housing Survey in 2007, it
would be logical for households with
clothes washers to be larger than
average. NEEA also recommended that
DOE acquire field data itself to
determine annual clothes washer use
cycles. (NEEA, No. 12 at pp. 10–11;
NEEA, Public Meeting Transcript, No.
20 at pp. 113–114; NEEA, No. 26 at
pp. 9–10).
In considering these comments, DOE
notes that an independent analysis of
the 2005 RECS data by the Joint
Commenters resulted in essentially an
identical estimate of the number of
annual clothes washer cycles as DOE
proposed in the September 2010 NOPR.
This suggests that DOE’s calculation of
average annual cycles based on the
weekly usage data did not introduce any
systematic error in the final value of
annual clothes washer cycles. DOE has
also reviewed the clothes washer data
recently collected in Southern
California as part of SDG&E’s ‘‘High
Efficiency Clothes Washer Voucher
Incentive Program’’ and PG&E’s ‘‘Mass
Markets Residential Program.’’ 9 Both
programs used a combination of
telephone surveys and onsite metering
to determine the impact of high
efficiency clothes washers on energy
and water consumption. As part of the
telephone surveys, program participants
were asked to self-report the number of
weekly wash loads. The results for these
13909
surveys, from Table 30 in the CPUC
report, are shown in Table III.1 below.
TABLE III.1—SELF-REPORTED WASH
LOADS FROM 2009 SOUTHERN CALIFORNIA TELEPHONE SURVEYS
Utility
Number of
participants
Average number wash
loads/week
PG&E ........
SDG&E .....
422
301
5.84
5.80
Total ...
723
5.82
Multiplying the average self-reported
number of wash loads per week by 52
weeks per year would result in 303
annual clothes washer use cycles. This
value can be compared to the results of
the onsite metering studies conducted
under the PG&E and SDG&E programs
during the spring and early summer of
2009. These programs also recorded the
actual number of wash loads per week,
based on energy and water meter data,
at 115 residential sites chosen to
include both participants and nonparticipants in the utility incentive
programs. The results from Table 20 in
the CPUC report, disaggregated by
participant status as well as clothes
washer efficiency, are presented in
Table III.2.
TABLE III.2—MEASURED WASH LOADS FROM 2009 SOUTHERN CALIFORNIA METERING STUDIES
Number. of
sites
Category
Efficiency
Non-Participants ...........................................................
Non-ENERGY STAR ....................................................
ENERGY STAR ............................................................
Sub-Total ......................................................................
ENERGY STAR ............................................................
Number wash
loads/week
24
17
41
74
4.77
6.23
5.38
4.80
Weighted Average for all Sites ............................................................................................................................................................
5.01
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Participants ...................................................................
On average, subjects in the metering
studies performed (5.01 loads per week)
× (52 weeks per year) = 261 annual
clothes washer loads, which is lower
than the self-reported annual use cycles.
Although in general, metering data has
a higher confidence level than survey
results, DOE also notes that the sample
size of the onsite study was relatively
small, and there was significant
variation within that sample. For
example, the annual use cycles for nonparticipants was found to range from
248 for consumers with non-ENERGY
STAR clothes washers to 324 for
consumers with ENERGY–STAR clothes
washers. Further, the data were also
collected in a limited geographical
region and over only a portion of the
year, and may not be fully
representative of national clothes
washer usage over a complete year.
For these reasons, DOE has
determined that the 2005 RECS report is
the most representative source of
information on annual clothes washer
cycles, and is adopting a value of 295
annual cycles in today’s final rule.
ASAP questioned whether the
proposed value of 295 annual clothes
washer cycles corresponds to the
number of clothes dryer cycles proposed
in the amended DOE clothes dryer test
procedure, accounting for the dryer
usage factor. (ASAP, Public Meeting
Transcript, No. 20 at p. 115) DOE
adopted an amended clothes dryer test
procedure in a final rule published in
the Federal Register on January 6, 2011.
(76 FR 972) In the amended test
procedure, DOE revised the number of
clothes dryer annual use cycles from the
416 cycles per year, previously specified
by the clothes dryer test procedure, to
283 cycles. (10 CFR 430.23(d)) DOE
based this revision on analysis of data
from the 2005 RECS for the number of
clothes washer cycles and the frequency
of clothes dryer use. According to DOE’s
analysis of 2005 RECS data, for
households with both a clothes washer
and clothes dryer, the percentage of
9 The results of these and other 2006–2008
residential energy efficiency programs run by the
Investor-Owned Utilities in California are
summarized in a report to the CPUC: ‘‘Residential
Retrofit High Impact Measure Evaluation Report’’,
The Cadmus Group, Inc., Itron, Jai J. Mitchell
Analytics, KEMA, PA Consulting Group, and
Summit Blue Consulting, LLC, February 8, 2010.
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clothes washer loads dried in a clothes
dryer is 96 percent. Therefore, adopting
295 annual clothes washer use cycles in
today’s final rule is consistent with the
amended clothes dryer test procedure.
DOE also notes that the dryer usage
factor in the clothes washer test
procedure adopted in today’s final rule
is 0.91. This value is also based on
analysis of 2005 RECS data, but applies
to all households with a clothes washer,
as explained in more detail in section
III.C.3.e of this rule.
Test Load Size Specifications
The current DOE clothes washer test
procedure specifies the test load size for
the active washing mode energy tests
based on the clothes washer’s container
volume. The table specifying the test
load sizes in the test procedure, Table
5.1, currently covers clothes washer
container volumes only up to 3.8 ft3.
DOE is aware that multiple clothes
washers available on the market have
container volumes exceeding 3.8 ft3.
In the September 2010 NOPR, DOE
proposed extending Table 5.1 to
accommodate larger clothes washer
capacities, up to 6.0 cubic feet. The
relationship between test load size and
clothes washer volume is linear in Table
5.1 in appendix J1; DOE determined
preliminarily that these values were
appropriate, and that using a linear
extension for larger load sizes would be
valid. The proposed amendment
extended the linear relationship
between test load size and clothes
washer container volume currently in
the DOE clothes washer test procedure.
In the August 2011 SNOPR, DOE
proposed some minor adjustments to
the proposed extension of Table 5.1 to
correct for inconsistent decimal places
in the minimum and maximum load
size values, which subsequently affected
the calculation of some of the average
load sizes. DOE proposed to amend the
extension to Table 5.1 by specifying
each load size value to the hundredths
decimal place.
AHAM, ALS, and Whirlpool support
the proposed linear extension of the test
load size in Table 5.1. AHAM, ALS,
EarthJustice, and NRDC agreed that DOE
should extend Table 5.1 to
accommodate clothes container volumes
up to 6.0 ft3. Whirlpool stated that test
load size has been the subject of several
test procedure waivers granted by DOE
over the last six years, and that DOE’s
responses have been consistent with the
proposed extension of Table 5.1.
According to Whirlpool, the linear
relationship remains valid because the
majority of clothes washers sold today
are adaptive fill machines, which use
only the amount of water required by
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the load size. Furthermore, consumers
continue to wash some small loads in
the higher-capacity machines. For that
reason, Whirlpool suggested, for
example, that the 7.8 percent increase in
average test load size from a 3.0 ft3 to
3.3 ft3 clothes washer is reasonable even
though capacity increased by 10
percent. Whirlpool does not believe that
the test procedure is biased to favor
large-capacity clothes washers. AHAM
stated that DOE should ensure that the
test procedure does not contain a bias
towards large-capacity machines.
(AHAM, No. 2 at p. 23) EarthJustice and
NRDC support AHAM’s statement.
(AHAM, No. 2 at p. 23; AHAM, No. 4
at p. 4; AHAM, No. 14 at p. 12; AHAM,
Public Meeting Transcript, No. 20 at pp.
122–123; AHAM, No. 24 at p. 3; ALS,
No. 10 at p. 3; Whirlpool, No. 13 at p.
7; Whirlpool, No. 27 at p. 4;
EarthJustice, No. 3 at p. 1; NRDC, No.
8 at p. 1).
LG stated that it supports DOE’s
proposal for load sizes, but also stated
that the maximum load size in Table 5.1
should be the same for all clothes
container volumes, with annual usage
cycles decreased for machines with
larger volumes to reflect a reduced
number of loads per year. (LG, Public
Meeting Transcript, No. 20 at pp. 122,
124–126).
NIST recommended collecting
additional load size data, because
consumers who need to do more
laundry may purchase the larger clothes
washers. (NIST, Public Meeting
Transcript, No. 20 at pp. 128–129).
NEEA does not support the proposed
linear extension of Table 5.1 up to
clothes container volumes of 6.0 ft3.
NEEA commented that there are no data
to suggest that maximum load sizes
would extend to 24 pounds, and that
there is no demonstrable correlation at
this time between clothes container
volume and load weight or load volume.
NEEA stated that many households do
some laundry loads when they run out
of clean clothes, or particular clothing
items, regardless of the load size or
clothes washer capacity. NEEA
recommended that DOE prescribe an
average test load size that is based on
P&G data. (NEEA, No. 12 at p. 11;
NEEA, No. 26 at p. 10).
The California Utilities, Energy
Solutions (ES), the Joint Commenters,
NEEA, and NRDC commented that the
test load sizes in Table 5.1 may create
an unwarranted bias towards largercapacity clothes washers. The California
Utilities and NRDC objected to the
maximum load sizes being a fixed
percentage of total capacity, while the
average test load size is calculated as the
average of a fixed minimum load and
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the maximum load. The California
Utilities, NRDC, and the Joint
Commenters provided values for the
average test load size as a percentage of
capacity, which ranged from 63–68
percent for smaller-capacity clothes
washers but 54–57 percent for largecapacity machines. NRDC commented
that the relationship of load size to
capacity may be linear, but it is not
proportionate, suggesting that
consumers who purchase largercapacity clothes washers leave more
capacity unused. NRDC further
commented that it is not sure that there
is data to support this conclusion. The
California Utilities commented that the
average load size is the primary driver
of the energy test load due to the load
usage factors, and that average load
sizes increases with capacity at a slower
rate than the increase in maximum load
size because the minimum load size
remains constant. The California
Utilities stated it was not aware of any
recent consumer usage data on test load
size. ES also expressed concern about
the fixed minimum load size for all
capacities. (California Utilities, No. 18 at
pp. 3–4; California Utilities, No. 25 at
pp. 2–3; ES, Public Meeting Transcript,
No. 20 at p. 124; Joint Commenters, No.
16 at p. 5; Joint Commenters, No. 23 at
p. 1; NEEA, No. 12 at p. 12; NEEA, No.
26 at pp. 10–11; NRDC, No. 8 at p. 1;
NRDC, Public Meeting Transcript, No.
20 at pp. 14, 119–121; 126–127).
The Joint Commenters provided
calculations for the allowably energy
and water consumed per pound of
clothes for clothes washers with
capacities ranging from 3.0 to 5.5 ft3,
based on the weighted-average test load
size and assuming a fixed MEF of 2.0
and a fixed WF of 6.0. According to the
Joint Commenters’ calculations, under
those conditions a 5.5 ft3 clothes washer
with MEF = 2.0 is allowed 10 percent
more energy and water per pound of
clothes than a 3.0 ft3 clothes washer
with the same MEF rating. The Joint
Commenters stated that this could have
implications for the ENERGY STAR
ratings, if large-capacity clothes washers
can more easily achieve ENERGY STAR
certification without ensuring better
real-world energy and water use. (Joint
Commenters, No. 16 at p. 5).
The California Utilities and the Joint
Commenters suggested approaches for
DOE to revise Table 5.1 to eliminate a
possible bias towards larger-capacity
clothes washers. The California Utilities
recommended that DOE base average
test load size on a fixed percentage of
clothes container volume, and suggested
a value of approximately 65 percent of
capacity. The California Utilities further
recommended that DOE develop a new
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metric based on energy use per pound
of clothing washed, rather than energy
use as a function of capacity. The
California Utilities acknowledged the
substantial input required from
interested parties and the attendant
significant negative impact on the
clothes washer test procedure
rulemaking schedule, and therefore
recommended that DOE consider this
approach for a future test procedure
rulemaking. (California Utilities, No. 18
at p. 4).
The Joint Commenters suggested three
possible alternatives for revising the test
load sizes in Table 5.1:
1. Base the average test load size for
all washers in a particular product class
on the percentage of capacity used by
the average test load of the average-sized
clothes washer in that product class.
The Joint Commenters noted that,
according to AHAM, the average
shipment-weighted capacity in 2009
was 4.03 ft3 for front-loaders and 3.66 ft3
for top-loaders, yielding a capacity
utilization (i.e., ratio of average test load
weight to maximum test load weight) for
the average test load of 59 percent for
front-loaders and 60 percent for toploaders. Maximum test load weights for
other clothes washer capacities would
be derived using the scaling factor
currently used in Table 5.1,
approximately 4 pounds per cubic foot
of capacity.10
2. Base the average test load size for
all clothes washers on the average test
load size assumed in the RMC
calculation in the test procedure (i.e.,
the average test load size would be 52
percent of the maximum load size).
3. Use the test load sizes in the
current Table 5.1, but calculate the
average test load size for clothes
washers with capacities between 3.8 ft3
and 6.0 ft3 using the capacity utilization
of the largest machine in the current
table (i.e., the average test load size
would be fixed at 59.7 percent of the
maximum test load size for clothes
washers in this capacity range.)
The Joint Commenters requested that
DOE test a sample of front-loading and
top-loading clothes washers of various
capacities using the above-suggested
alternatives to compare the resulting
energy and water factors with the test
results obtained using the proposed test
procedure, and if there are substantial
differences, DOE should consider
revisions to Table 5.1 to reduce the
potential for unwarranted bias toward
large capacity clothes washers. (Joint
Commenters, No. 16 at pp. 6–7).
In the September 2010 NOPR, DOE
requested additional consumer data
regarding current test load sizes, but it
did not receive any such data from
interested parties. DOE carefully
considered the existing data sources for
evaluating minimum, maximum, and
average test loads. As noted above, P&G
provided data indicating that, in 2003,
average consumer load sizes were 7.2 lb
for all top-loading clothes washers and
8.4 lb for all front-loading clothes
washers. However, the P&G data does
not identify average load size as a
function of machine capacity, and
therefore DOE cannot infer that these
values are representative of average
consumer load sizes for clothes washers
of all capacities available on the market
today.
Under the current formulation of the
test load sizes, the average load size
represents a decreasing percentage of
maximum load size as the capacity of
the clothes washer increases. Largercapacity machines can therefore achieve
a given MEF/WF rating using larger
amounts of water and energy per pound
of clothing than smaller-capacity
machines with the same MEF/WF
rating. Information to suggest that this
scenario does not reflect true consumer
usage was not available for this
rulemaking. Information that would
indicate that average consumer clothing
load sizes are a fixed percentage of
clothes container capacity (and, thus,
maximum clothes load size) was also
not available. Updated consumer usage
data will be necessary to determine
whether the numerical advantage for
large-capacity clothes washers is
justified by real-world use. DOE is
aware of ongoing and future planned
field studies that are expected to
provide updated data regarding the
relationship between clothes washer
capacity and clothing load size. DOE
will consider using data from these field
studies in future clothes washer test
procedure rulemakings.
Based on available data, DOE
determined that a fixed minimum load
size is appropriate, given that
consumers may desire to wash only a
few articles of clothing regardless of the
size of their clothes washer. In
considering maximum test load sizes,
DOE reviewed user manuals for clothes
washer models from multiple
manufacturers, and noted that the
instructions generally included a
notation that the clothes container
could, and for some cycles, should, be
loaded to the point that the clothes
container is loosely filled. DOE infers
that some consumers will follow these
instructions, which will result in a
maximum test load size that is
proportional to the volume of the
clothes container.
For these reasons, DOE has
determined that the linear extension of
Table 5.1, including the proportional
relationship of maximum test load size
to clothes washer capacity, a fixed
minimum test load size, and calculation
of average test load size, currently
represents the best possible approach
for determining these load sizes.
Therefore, today’s final rule extends
Table 5.1 as proposed in the August
2011 SNOPR in appendix J1 and the
new appendix J2. If DOE receives new
data that would lead to a different
conclusion for the test load sizes
specified in Table 5.1, DOE will
consider updating the test procedure at
that time. The extension of Table 5.1
will also address the waivers and
interim waivers currently granted to
several manufacturers for testing clothes
washers with capacities greater than 3.8
cubic feet.
10 The comment states that the average test load
weight should be scaled, but this may be an editing
error: In Table 5.1 the scaling factor for average test
load weight ranges from 3.5 lb/ft3 for small capacity
to 2.3 lb/ft3 for large capacity, whereas the scaling
factor for maximum test load weight is a constant
4.10 ± 0.03 lb/ft3.
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Load Usage Factors
The load usage factors in the DOE test
procedure represent the fraction of all
wash cycles a typical consumer runs for
the minimum, average, and maximum
load sizes. At the time of publication of
the September 2010 NOPR, DOE was
not aware of any recent data
characterizing such usage patterns.
Therefore, DOE did not propose any
changes to the load usage factors.
NEEA stated that, in the absence of
updated data, the existing load usage
factors are acceptable, but that DOE
should acquire contemporory data to
support a validation of the current
numbers. (NEEA, No. 12 at p. 10, 12;
NEEA, No. 26 at p. 11) AHAM
commented that it is not aware of recent
data characterizing load size usage
patterns, and thus it supports DOE’s
proposal not to change the load usage
factors. (AHAM, No. 14 at p. 12).
For the reasons stated in the
September 2010 NOPR, DOE has
determined that the load usage factors
are the best estimate of usage patterns
available at this time. Therefore, DOE is
not revising the load usage factors in
today’s final rule.
Temperature Use Factors
DOE proposed in the September 2010
NOPR to amend the TUFs in the clothes
washer test procedure to account for
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steam wash cycles, and to revise the
warm rinse TUF. Table III.3 shows the
TUFs proposed in the September 2010
NOPR.
TABLE III.3—TEMPERATURE USE FACTORS PROPOSED IN THE SEPTEMBER 2010 NOPR
≤135 °F
(57.2 °C)
Max wash temp available
>135 °F
(57.2 °C)
Steam
No. wash temp selections ........................
Single
2 Temps
>2 Temps
3 Temps
>3 Temps
3 Temps
TUFs (steam) ............................................
TUFm (extra hot) ......................................
TUFh (hot) ................................................
TUFww (warm/warm) ................................
TUFw (warm) ............................................
TUFc (cold) ...............................................
....................
....................
....................
....................
....................
1.00
....................
....................
0.63
....................
....................
0.37
....................
....................
0.14
* 0.27
0.22
0.37
....................
0.14
....................
* 0.27
0.22
0.37
....................
0.05
0.09
* 0.27
0.22
0.37
0.02
0.12
....................
* 0.27
0.22
0.37
>3 Temps
0.02
0.03
0.09
* 0.27
0.22
0.37
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* Only applicable to machines offering a warm/warm cycle. For machines with no warm/warm cycle, this value should be zero and the warm
TUF (TUFw) should be increased by 0.27.
DOE assumed that the steam wash
cycle TUF would affect only the extrahot TUF, leaving the other TUFs
unchanged. DOE discussed its analysis
of the data on consumer wash and rinse
temperature selections from the 2005
RECS and the 2004 California RASS,
both of which provide information on
temperature selections. Because the
temperature use factors from each
source demonstrated general agreement,
DOE determined that the current TUFs
in its test procedure are a reasonable
estimate of current consumer use. DOE
therefore proposed to keep the TUFs for
cold wash, warm wash, and hot wash
unchanged. DOE incorporated the steam
cycle TUF by decreasing the value of the
extra-hot TUF.
In the September 2010 NOPR, DOE
also proposed to revise the methods for
measuring warm rinse and to
incorporate the revised measurement
into the test procedure’s calculations.
DOE observed that most clothes washers
available on the market allow users to
select a warm rinse only when it is
coupled with a warm wash cycle. DOE,
therefore, proposed to establish a TUF
for a full warm wash/warm rinse cycle.
DOE also proposed to eliminate the
incremental use factor attributed to
warm rinse, requiring instead the
measurement of energy and water
consumption over an entire wash/rinse
cycle that utilizes warm rinse. DOE
proposed using the same warm rinse
TUF of 0.27 for the complete warm
wash/warm rinse cycle. For those
clothes washers with such an option,
DOE also proposed to reduce the warm
wash/cold rinse TUF by a
corresponding amount, lowering it from
0.49 to 0.22. DOE further proposed that
the warm wash/warm rinse TUF would
not be applicable for clothes washers
with one or two wash temperature
settings, because those washers would
not provide a warm wash/warm rinse
cycle. DOE did not propose to amend
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the TUFs for wash temperature
selections other than the warm wash,
except for units offering a steam wash
cycle as previously described.
Additionally, the proposed TUFs for
warm/cold and warm/warm would sum
to the existing warm wash TUF; overall,
the warm wash temperature selection
would receive the same weight in the
energy and water consumption
calculations.
DOE received multiple comments
from interested parties in response to
the proposed temperature use factors.
NEEA expressed concern over the lack
of recent consumer usage pattern data,
but stated that the existing data do not
support changing the TUFs currently
provided in the test procedure. NEEA
commented that the most important
reason to acquire more recent data is
that ‘‘hot’’, ‘‘warm’’, and ‘‘cold’’
designations for the energy test cycle do
not reflect the current range of options
for wash and rinse temperatures. NEEA
also expressed concern that the
California RASS data may be outdated
and the fact that it is based on survey
data rather than field data. However,
NEEA stated that the most recent
California usage data would likely
support the current TUFs. (NEEA, No.
12 at p. 12; NEEA, Public Meeting
Transcript, No. 20 at p. 131).
NEEA also supports the proposed
methodology for measuring water and
energy consumption for warm rinse over
a complete cycle, with one exception.
NEEA does not agree that most clothes
washers currently available allow users
to select a warm rinse only with a warm
wash cycle. NEEA stated it may be
appropriate to specify that a separate
TUF be established for a hot wash/warm
rinse cycle, a hot wash/warm rinse/
steam cycle, or a warm wash/warm
rinse/steam cycle. (NEEA, No. 12 at p.
12).
BSH commented that consumer use is
well-represented by measuring cold,
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warm, and possibly hot wash cycles
specified for cotton or ‘‘normal’’ fabrics,
for the following reasons:
1. Many customers run one lowenergy cycle, such as a ‘‘delicates’’ or
‘‘hand-wash’’ program, per week.
2. Many customers also run one or
more ‘‘permanent press’’ or similar
program per week, which is typically
equal to or lower in energy than the
cotton program.
3. Other special programs that use
more or less energy or water than the
cotton program are run very
infrequently.
4. Basing MEF on only the cotton or
normal programs is already overreporting energy use versus actual
consumer behavior.
(BSH, No. 17 at p. 5).
Whirlpool commented that DOE must
use data that are representative of
currently manufactured clothes washers
rather than data that are 15 or more
years old. Whirlpool stated that it had
provided data to DOE that suggested a
TUF of 0.016 (1.6 percent) for warm
rinse, and that this percentage is
representative of its clothes washers.
Whirlpool also noted that it is the
largest manufacturer of clothes washers
in the United States, with a 64 percent
market share, and it only offers a warm
rinse option on approximately 9 percent
of its clothes washers. According to
Whirlpool, for the 27 percent TUF for
warm rinse to be valid, its competitors
would have to offer warm rinse on over
60 percent of their machines and all
consumers would have to select warm
rinse if it were offered. (Whirlpool, No.
13 at pp. 8–11).
AHAM, ALS, and Whirlpool stated
that the proposed warm wash/warm
rinse TUF of 0.27 is too high, and that
a warm rinse option has become
increasingly rare in clothes washers
currently available on the market. ALS,
AHAM, and Whirlpool further
commented that data from Natural
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that there is a lack of evidence on which
to base a decrease in the existing TUF
value, as suggested by Whirlpool.
As discussed in section III.C.2.a, DOE
is not amending the test procedure to
measure energy and water use in steam
Percentage of
wash cycles. Thus, in the absence of
users that
Age of clothes washer
sufficient data on recent consumer
usually use
warm rinse
usage patterns to warrant changing the
TUFs, and because DOE is not adopting
5 to 9 years old ....................
19.2
provisions to measure steam wash
10 to 19 years old ................
19.9
cycles, DOE is retaining the TUFs that
20 years or older ..................
21.4
are provided in the existing test
procedure at appendix J1, with the
DOE further notes that the TUF for
modification that the warm/warm TUF
warm rinse is applicable only to those
will be treated as a complete wash/rinse
clothes washers that provide a warm
cycle, and the warm/cold TUF adjusted
rinse option (i.e., the warm rinse TUF
accordingly when a warm/warm cycle is
represents the percentage of laundry
available on the clothes washer.
loads for which a consumer selects the
DOE considered the possibility of
warm wash/warm rinse temperature
requiring measurement of a hot wash/
combination on machines that offer a
warm rinse cycle as part of the energy
warm rinse option). Therefore, DOE
test cycle, and assigning a TUF
disagrees with Whirlpool’s statement
accordingly. DOE’s analysis of 2005
that for the 27-percent TUF for warm
RECS data indicates that the percentage
rinse to be valid, its competitors would
of all respondents who usually select a
have to offer warm rinse on over 60
hot wash/warm rinse cycle is 1.8
percent of their machines and all
percent. DOE does not believe that this
consumers would have to select warm
small percentage would warrant the
rinse if it were offered. The intention of
additional test burden associated with
the TUFs is to represent typical
measuring a hot wash/warm rinse cycle
consumer usage patterns of individual
and including such energy and water
clothes washer models with a specific
consumption in the test procedure
set of temperature options, not the
calculations. Accordingly, DOE is not
average consumer usage patterns across
adopting a TUF for hot wash/warm
all types of clothes washer models.
rinse in today’s final rule.
DOE also reiterates that the survey
Dryer Usage Factor
data indicating warm rinse usage of 1.6
percent are based on a single clothes
DOE proposed in the September 2010
washer model from a single
NOPR to amend its clothes washer test
manufacturer, and that this clothes
procedure to include a dryer usage
washer model does not offer the warm
factor (DUF) of 0.91, based on the 2005
rinse option on the cycle recommended RECS. DOE proposed to use the value
for cotton or linen clothes. Commenters derived from the 2005 RECS, rather than
provided no additional data to
the 2004 California RASS, because the
demonstrate that this conclusion would 2004 California RASS is inconsistent
be valid for all clothes washer models
with the proposed number of wash
offering a warm rinse, including clothes cycles per year and because the 2005
washers that offer a warm rinse option
RECS data represent the entire country
on the cycle recommended for cotton or rather than one state.
linen clothes.
NEEA agreed with DOE’s
DOE does not have any information to methodology for deriving the proposed
determine what percentage of
DUF. (NEEA, No. 12 at p. 12) AHAM
respondents in either the NRCan or
stated that it does not oppose the
2005 RECS surveys who stated that they proposed DUF, but commented that
usually used cold rinse cycles were
DOE should be relying on more
using machines equipped with a warm
representative data than that in the 2005
rinse option. DOE believes it is
RECS. (AHAM, No. 14 at p. 13) ALS
reasonable to assume that at least some
opposed the proposed DUF, questioning
TABLE III.4—2005 RECS DATA ON
consumers with cold rinse-only clothes
the validity of the 2005 RECS data. ALS
THE USE OF WARM RINSE BY AGE washers were included in the survey
supports retaining the existing value of
samples, and thus, if those respondents
0.84, in the absence of other data. (ALS,
OF THE CLOTHES WASHER
were discounted, the percentage of users No. 10 at p. 4) ALS did not provide any
Percentage of selecting warm rinse would be even
further information on why it believes
users that
higher than the estimates shown above.
the 2005 RECS data may be invalid.
Age of clothes washer
usually use
Given the disparity between the results
DOE has determined that 2005 RECS
warm rinse
for warm rinse usage from the NRCan
data is the best available data that
reasonably captures the dryer usage
Less than 2 years old ...........
21.5 and 2005 RECS surveys and the data
2 to 4 years old ....................
19.1 submitted by Whirlpool, DOE concludes practices of consumers using residential
Resources Canada (NRCan) show that
both wash and rinse temperatures are
decreasing over time. According to
AHAM and Whirlpool, for all clothes
washers in 2007, the NRCan data shows
warm rinse to be the most frequent
selection only 16 percent of the time,
which is a decrease from 23 percent in
1993. AHAM, ALS, and Whirlpool
commented that NRCan data is relevant
to U.S. consumer usage patterns because
Canadian clothes washer designs are the
same as those in the United States and
consumer practices are similar. (AHAM,
No. 14 at pp. 12–13; ALS, No. 10 at p.
4; Whirlpool, No. 13 at pp. 8–11;
Whirlpool, Public Meeting Transcript,
No. 20 at pp. 133–134).
BSH commented that it supports the
use of the NRCan data for determining
the TUFs, and that the conclusions
AHAM has drawn from the data agree
well with BSH’s customer feedback.
(BSH, No. 17 at p. 4) LG stated that DOE
could infer warm rinse usage from the
percentage of detergent purchases that
are cold water formulations. According
to LG, if, for example, 85 percent of the
detergent purchased in the United
States were cold-water detergent, DOE
could assume that the warm rinse TUF
is very low. (LG, Public Meeting
Transcript, No. 20 at p. 133) China
requested that DOE clarify the TUF for
steam, extra-hot, hot, warm, and cold
wash cycles as well as warm wash/
warm rinse and other wash modes.
(China, No. 19 at p. 4).
DOE re-examined the 2005 RECS data
to determine whether the usage patterns
show a reduction in warm rinse usage
for newer machines, of which,
according to Whirlpool, a smaller
percentage are including a warm rinse
option. As shown in Table III.4, there is
no correlation in the 2005 RECS data
between the age of the clothes washer
and the percentage of users reporting
that they usually select warm rinse. The
percentage of users reporting that they
usually select warm rinse ranged from
19.1 to 21.5 percent. These data suggest
that the introduction of newer models to
the installed base did not affect
consumer usage of warm rinse, at least
during the time frame covered by the
survey (i.e., until 2005).
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TABLE III.4—2005 RECS DATA ON
THE USE OF WARM RINSE BY AGE
OF THE CLOTHES WASHER—Continued
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clothes dryers, and is thus adopting a
revised DUF of 0.91 in the amended test
procedure in this final rule.
Load Adjustment Factor
The load adjustment factor (LAF)
represents the ratio of maximum load
size to average load size. This ratio is
used in the calculation of the energy
required to remove moisture from the
test load. The RMC value used in this
calculation is based only on tests using
the maximum test load, and the LAF is
used to scale this value down to
represent the average load size. In the
September 2010 NOPR, DOE noted that
it lacked information warranting
adjustment of this value or a change
from a fixed value to one that varies as
a function of average load size, and
therefore did not propose to amend the
LAF in the test procedure.
In response to the September 2010
NOPR, DOE received numerous
comments regarding the LAF, which
were summarized in the August 2011
SNOPR. Upon consideration of these
comments, DOE determined that the
LAF is duplicative of, yet inconsistent
with, the load usage factors. Therefore,
for consistency with other relevant
provisions of the test procedure, DOE
proposed in the August 2011 SNOPR
that the representative load size
calculation in the equation for drying
energy incorporate the load usage
factors rather than a separate LAF. DOE
proposed that the current representative
load size calculation be replaced by the
weighted-average load size calculated
by multiplying the minimum, average,
and maximum load usage factors by the
minimum, average, and maximum load
sizes, respectively, and summing the
products.
DOE received the following comments
in response to the proposed elimination
of the LAF in the August 2011 SNOPR:
AHAM and ALS support the approach
of using a weighted-average load size in
the calculation of dryer energy use, but
note that the new approach will
increase the measured energy. AHAM
and ALS added that DOE must revise
the relevant energy conservation
standard to reflect the new test
procedure, ensuring that there is no
change in the stringency of the
standards based on average energy
consumption calculations before and
after the changes to the test procedure.
ALS suggested revising only appendix
J2 with this change, noting that there is
still time to consider this impact in the
updated minimum efficiency standards.
(AHAM, No. 24 at p. 4; ALS, No. 22 at
pp. 2–3).
Whirlpool stated that it would oppose
the proposal to use a weighted-average
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load size for the purposes of calculating
drying energy if it would require testing
for RMC on the average and minimum
load sizes in addition to the maximum
load size. Whirlpool stated that such a
requirement, if adopted, would triple
the RMC testing required, adding at
least one full day to the test time for
each base model. Whirlpool added that
DOE’s proposal would not increase the
test burden if it requires only testing
RMC at the maximum load size.
Whirlpool also recommended that this
amendment be made only to appendix
J2. (Whirlpool, No. 27 at p. 3).
The Joint Commenters, California
Utilities, and NEEA support DOE’s
proposal to replace the representative
load size based on the load adjustment
factor with a weighted-average load size
to calculate dryer energy use. The Joint
Commenters and the California Utilities
noted, however, that this proposed
change would result in a greater
increase in the representative load size
used to calculate dryer energy
consumption for small capacity washers
than for large-capacity washers, which
would therefore make any potential bias
towards large-capacity washers more
significant. The Joint Commenters
added that they are not aware of any
data indicating that consumers utilize a
smaller percentage of the washer
capacity when using large-capacity
machines compared to smaller
machines, nor of any data indicating it
is more difficult for larger-capacity
machines to achieve high efficiency
ratings. In the absence of such data, the
Joint Commenters recommended that
the weighted-average load size as a
percentage of total capacity be kept
constant across all washer capacities.
(Joint Commenters, No. 23 at p. 4;
California Utilities, No. 25 at p. 3;
NEEA, No. 26 at p. 5).
For the reasons stated in the August
2011 SNOPR, DOE replaces the
representative load size calculation with
the weighted average load size
calculated using the load usage factors.
This change applies only to the newly
created appendix J2. This approach will
not require measuring the RMC for any
additional load sizes, and therefore will
not increase manufacturer test burden.
4. Energy Test Cycle Definition
The ‘‘energy test cycle’’ consists of the
wash cycles currently used in
determining the modified energy factor
(MEF) and water factor (WF) for a
clothes washer, and proposed to be used
for determining integrated modified
energy factor (IMEF) and integrated
water consumption factor (IWF). The
energy test cycle is defined in section
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1.7 of the current clothes washer test
procedure as follows:
‘‘1.7 Energy test cycle for a basic model
means (A) the cycle recommended by the
manufacturer for washing cotton or linen
clothes, and includes all wash/rinse
temperature selections and water levels
offered in that cycle, and (B) for each other
wash/rinse temperature selection or water
level available on that basic model, the
portion(s) of other cycle(s) with that
temperature selection or water level that,
when tested pursuant to these test
procedures, will contribute to an accurate
representation of the energy consumption of
the basic model as used by consumers. Any
cycle under (A) or (B) shall include the
agitation/tumble operation, spin speed(s),
wash times, and rinse times applicable to
that cycle, including water heating time for
water heating clothes washers.’’
In the September 2010 NOPR, DOE
proposed to amend Part (B) of the
energy test cycle definition to clarify the
wash parameters that should be
considered to determine which cycle
settings should be included under Part
(B) of the definition.
In additional testing after the
publication of the September 2010
NOPR, DOE observed that some clothes
washers retain in memory the most
recent options selected for a cycle
setting the next time that cycle is run.
To ensure repeatability of test results,
particularly for cycles under Part (B) of
the energy test cycle definition, DOE
proposed in the August 2011 SNOPR to
provide further clarification that the
manufacturer default conditions for
each cycle setting shall be used, except
for the temperature selection, if
necessary.
DOE received multiple comments
from interested parties regarding its
proposed changes to the energy test
cycle definition. The comments
generally indicated that the proposed
revisions to the definition still lacked
clarity. In response to the August 2011
SNOPR, Whirlpool, GE, and ALS jointly
proposed a modified definition of the
energy test cycle which eliminated what
these commenters perceived as a
primary source of ambiguity in DOE’s
previously proposed definition. (GE,
Whirlpool, & ALS, No. 28 at pp. 1–2)
Because of the scope of the
manufacturers’ proposed changes, and
because the energy test cycle definition
is a critical component of the test
procedure, DOE incorporated the
manufacturers’ suggestions into a new
definition, proposed in the November
2011 SNOPR. The most notable
proposed change involved Part (B) of
the energy test cycle definition, which
DOE proposed as follows:
‘‘(B) If the cycle setting described in (A)
does not include all wash/rinse temperature
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combinations available on the clothes
washer, the energy test cycle shall also
include the alternate cycle setting(s) offering
these wash/rinse temperature combination(s),
tested at the wash/rinse temperature
combinations not available on the cycle
setting described in (A).
Where multiple alternate cycle settings
offer a wash/rinse temperature combination
that is not available on the cycle setting
recommended by the manufacturer for
washing cotton or linen clothes, the cycle
setting certified by the manufacturer to have
the highest energy consumption, as measured
according to section 2.13, shall be included
in the energy test cycle.’’
DOE stated that this proposed new
definition would provide further clarity
and produce more accurate, repeatable,
and reproducible results within and
among all test laboratories.
DOE also proposed a new section
2.13, which would provide instructions
for determining the cycle setting with
the highest energy consumption in the
case where multiple alternate cycle
settings offer a wash/rinse temperature
combination not available on the cycle
setting recommended by the
manufacturer for washing cotton or
linen clothes.
In the November 2011 SNOPR, DOE
responded to prior comments received
in response to the September 2010
NOPR and August 2011 SNOPR. DOE
received the following comments in
response to the November 2011 SNOPR:
NEEA commented that it supports
DOE’s decision to keep Part (B) of the
energy test cycle definition, and stated
that all cycle selections for which a TUF
has been developed should be included
in the energy test cycle. NEEA
recommended that DOE ensure that
manufacturer default settings are chosen
for selections other than water
temperature, particularly for parameters
that would affect RMC, since a large
fraction of total energy use is derived
from RMC. NEEA believes this is
especially important since DOE
proposed to use only machine and hot
water energy use as the criteria for
determining which of the alternate cycle
settings has the highest energy use.
NEEA added that it believes DOE
adequately evaluated the potential test
burden impact on manufacturers, and it
does not believe that the proposed test
procedure modifications will create
additional test burden on any
manufacturers. (NEEA, No. 31 at p. 2).
AHAM commented that the newly
proposed energy test cycle definition
would not provide any further clarity to
manufacturers. AHAM and GE
suggested that further clarification of the
language in several areas would be
necessary to ensure the test procedure is
repeatable and representative of
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consumer behavior. In particular,
AHAM suggested that the definition
should explicitly state that all
temperature selections corresponding to
the TUFs, which are available on a
product, be tested only once, and that
they should be tested only during the
‘‘Normal’’ cycle if possible. (AHAM, No.
34 at p. 2; GE, No. 35 at p. 1).
Whirlpool reiterated its comment
from the August 2011 SNOPR that the
language of Part (A) of the current
energy test cycle definition in appendix
J1 is adequate and that Part (B) does not
add value. Whirlpool also stated,
however, that it agrees with DOE that
the language in Part (B) of the current
energy test cycle definition in appendix
J1 is unclear and subject to varying
interpretations. Whirlpool commented
that as written, DOE’s proposal would
not reflect real-world consumer use and
would increase manufacturer test
burden by 3–4 times. Whirlpool stated
that it believes DOE did not intend in
its proposed language to require testing
the maximum energy-consuming cycles
for all possible temperature
combinations on a product; rather, the
scope for inclusion of test cycles beyond
the ‘‘Normal’’ cycle should logically be
limited to temperature selections for
which a TUF has been developed.
Whirlpool added that limiting cycle
selection to already-existing TUFs
would eliminate the need for exhaustive
testing, which would reduce test burden
and be more representative of consumer
usage. (Whirlpool, No. 33 at pp. 1–2).
After reviewing comments from
interested parties, DOE notes that it
intended its proposed definition to
require the testing of all temperature
selections available on a product for
which a TUF has been developed. See
76 FR 69870, 69875. DOE also agrees
with commenters who suggested that
each TUF should be tested only once
and that each TUF should be tested
using the ‘‘Normal’’ cycle if possible.
DOE did not intend for the revised
definition to require the testing of all
temperature combinations within all the
cycle selections available on a machine.
DOE concurs that this would have
resulted in a significant increase in test
burden.
DOE has amended the language of the
energy test cycle in today’s final rule
accordingly. These amendments are
largely consistent with the suggested
amendments from manufacturers, as
described in more detail in the
following sections.
Regarding the use of manufacturer
default settings, DOE concurs with
NEEA that the manufacturer default
settings for selections other than water
temperature should be used, including
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during testing under the new section
2.13 to determine which of the alternate
cycle settings has the highest energy
use. Today’s final rule specifies in both
the energy test cycle definition and in
section 2.13 that the manufacturer
default settings should be used for all
wash parameters other than temperature
selection.
The following sections describe
comments received in regard to each of
the individual parts of DOE’s proposed
definition of the energy test cycle, as
well as comments regarding the new
section 2.13 and the proposed revision
to manufacturer reporting requirements.
DOE’s responses to comments are
provided in each section.
Part (A) of the Proposed Definition
AHAM proposed modifying Part (A)
to clarify that it applies only to
temperature selections for which TUFs
have been developed, as follows:
‘‘(A) The cycle setting recommended by the
manufacturer for washing cotton or linen
clothes, including all wash/rinse temperature
selections for each of the temperature use
factors (TUFs) offered in that cycle setting,
and’’
(AHAM, No. 34 at p. 6)
DOE believes that AHAM’s proposed
modification would add clarity to the
energy test cycle definition while
maintaining consistency with the intent
of DOE’s proposed definition. The
proposed modification would also
maintain consistency with the original
intent of Part (A) as defined in the
current test procedure at appendix J1.
Therefore, this final rule adopts
AHAM’s proposed clarification for Part
(A) of the energy test cycle definition in
appendix J2.
Part (B) of the Proposed Definition
AHAM and GE requested clarification
of the term ‘‘temperature combination’’
in the second paragraph of Part (B) in
relation to the term ‘‘temperature
selection’’ in Part (A). AHAM proposed
maintaining consistency in the language
in order to avoid ambiguity from using
two words with the same meaning.
AHAM requested that the term
‘‘temperature selection’’ be used
instead, believing that it is clearer and
more representative. (AHAM, No. 34 at
p. 2; GE, No. 35 at p. 2).
AHAM, ALS, and GE requested
clarification of the phrase ‘‘shall also
include’’ in Part (B) of the energy test
cycle definition. ALS commented that it
is unclear as to whether the phrase
‘‘shall be included’’ means to directly
add the energy of Part (B) to Part (A), or
to average the energy from Parts (A) &
(B), or to apply an unknown usage factor
to Part (B). (AHAM, No. 34 at p. 2; ALS,
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No. 32 at p. 1; GE, No. 35 at p. 2)
Whirlpool commented that averaging all
cycles used by consumers would be
unduly burdensome and would not
provide any appreciable difference in
results than would be derived from Part
(A) of the current energy test cycle
definition in appendix J1. (Whirlpool,
No. 33 at p. 1).
AHAM proposed modifying Part (B)
by specifying that Part (B) applies only
to temperature selections for which
TUFs have been developed, and that
each TUF available on the product
should be tested only once. GE
commented that it agrees with AHAM’s
proposed modifications. Whirlpool also
suggested specifying that Part (B)
applies only to temperature selections
for which TUFs have been developed.
(AHAM, No. 34 at p. 6; GE, No. 35 at
p. 2; Whirlpool, No. 33 at p. 2).
AHAM proposed the following
language for Part (B), which also
incorporates the suggested edits of
Whirlpool:
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‘‘(B) If the cycle setting described in Part
(A) does not include all wash/rinse
temperature selections for each of the TUFs
available on the clothes washer, the energy
test cycle shall also include the alternate
cycle setting(s) offering these remaining
wash/rinse temperature selection(s), tested at
the wash/rinse temperature selections for
each TUF or TUFs not available on the cycle
setting described in Part (A).
Where multiple alternate cycle settings
offer a wash/rinse temperature selection for
which a TUF has been developed and that is
not available on the cycle setting
recommended by the manufacturer for
washing cotton or linen clothes described in
Part (A), the alternate cycle setting certified
by the manufacturer to have the highest
energy consumption for that TUF, as
measured according to section 2.13, shall be
included in the energy test cycle so that each
TUF that is available on the product has been
tested once.’’
(AHAM, No. 34 at p. 6)
DOE notes that Part (B) of its
proposed definition uses the term
‘‘temperature combination’’ instead of
the term ‘‘temperature selection,’’ which
is used in Part (A). In addition, the term
‘‘temperature selection’’ implies a
setting on the machine that a user
would select, whereas ‘‘temperature
combination’’ could be interpreted to
mean the actual temperature
experienced inside the wash drum for a
given temperature selection. This could
create confusion if a temperature
selection on the machine provides
different actual temperatures depending
on which cycle selection is chosen. For
example, a hot/cold temperature
selection could provide a wash
temperature of 120 °F on the Cottons
setting with a 60 °F rinse temperature,
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yet provide a higher wash temperature
of 135 °F on the Heavy Duty setting with
a 60 °F rinse temperature. In this case,
‘‘temperate selection’’ would refer to the
single labeled hot/cold selection on the
machine, whereas ‘‘temperature
combination’’ could be interpreted to
mean both the 120/60 °F wash/rinse
temperature combination and the 135/
60 °F temperature combination. The
intent of DOE’s proposed definition of
the energy test cycle is to require the
testing of each wash/rinse temperature
selection as labeled on the machine’s
control panel, rather than requiring the
testing of every single temperature
combination that occurs among all the
different cycle selections on the
machine. Therefore, today’s final rule
uses the term ‘‘temperature selection’’
consistently throughout the energy test
cycle definition.
Similarly, DOE is concerned that the
term ‘‘cycle setting’’ could also
introduce ambiguity into the definition.
DOE had proposed to use the term
‘‘cycle setting’’ rather than the term
‘‘cycle,’’ which is used in the current
appendix J1 definition, to differentiate
between the labeled cycles on a
machine (i.e., Normal, Whites, Colors,
Heavy Duty, etc.) and a single active
mode laundry cycle, which is
commonly referred to as a ‘‘cycle.’’ DOE
has observed that user manuals from
manufacturers representing a significant
portion of the market refer to the labeled
cycles as ‘‘cycles’’ (i.e., the ‘‘Normal
cycle’’, ‘‘Whites cycle’’, ‘‘Colors cycle,’’
etc.). Because of this, a ‘‘cycle setting’’
could be interpreted to mean a specific
temperature, soil level, spin speed, or
other setting within the labeled cycle.
Therefore, to prevent this possible
ambiguity, today’s final rule instead
uses the term ‘‘cycle selection’’ to mean
the labeled cycle on the machine.
As discussed previously, DOE
intended its proposed definition to
require the testing of all temperature
selections available on a product for
which a TUF has been developed. DOE
also agrees with commenters that each
TUF should be tested only once and that
each TUF should be tested using the
‘‘Normal’’ cycle if available. Therefore,
DOE supports AHAM and the
manufacturers’ suggested modifications
to Part (B), which specify that Part (B)
applies only to temperature selections
for which TUFs have been developed,
and that each TUF available on the
product should be tested only once.
Therefore, today’s final rule adopts
AHAM’s proposed clarifications for Part
(B) of the energy test cycle definition in
appendix J2.
Based on comments from AHAM and
manufacturers regarding confusion
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about how the energy results from Part
(B) are to be included in the energy test
cycle, today’s final rule replaces the
phrase ‘‘shall also include * * *’’ with
the phrase ‘‘shall include, in addition to
Part (A) * * *.’’ DOE believes that this
change, coupled with the clarification
that Part (B) applies only to the TUFs
not available in the cycle selection used
for Part (A), will remove ambiguity
about how to include the test results for
Part (B). Consistent with the current
appendix J1 test procedure, the energy
and water consumption measured under
Part (B) of the energy test cycle should
be weighted by the appropriate TUF and
added to the weighted energy and water
consumption measured under Part (A).
Part (C) of the Proposed Definition
DOE did not receive any comments
from interested parties regarding Part
(C) of the proposed definition of the
energy test cycle. Today’s final rule
modifies DOE’s proposed language for
Part (C) by revising the reference to
‘‘Part (A) and Part (B)’’ so that Part (C)
reads as follows:
‘‘All cycle selections included under Part
(A) and all cycle selections included under
Part (B) shall be tested using each
appropriate load size as defined in section
2.8 and Table 5.1 of this appendix.’’
Because Part (A) refers to the specific
cycle selection recommended by the
manufacturer for washing cotton or
linen clothes, and Part (B) refers to other
alternate cycle selection(s), none of the
cycle selections included in the energy
test cycle would be tested under both
Part (A) and Part (B). The revised Part
(C) is applicable to the cycle selected
under Part (A) and all cycles included
separately under Part (B).
Part (D) and Part (E) of the Proposed
Definition
Whirlpool agrees with DOE’s proposal
to specify that each cycle included as
part of the energy test cycle comprises
the entire active washing mode, and
excludes any delay start or cycle
finished modes. (Whirlpool, No. 33 at
p. 2)
NEEA disagrees with DOE’s proposal
to exclude delay start and cycle finished
modes as part of the active mode in the
energy test cycle definition. NEEA
believes that these modes should be
tested and assigned appropriate usage
factors. NEEA stated that certain clothes
washers offer delayed start and cycle
finished mode options not available in
the normal cycle. NEEA acknowledged,
however, the lack of available data on
delayed start and cycle finished mode,
and stated its intention to gather data on
these modes for inclusion in the energy
test cycle definition during the next
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opportunity to improve the test
procedure. (NEEA, No. 31 at p. 2).
For the reasons described previously
in sections III.B.2.b and III.B.2.c, today’s
final rule does not require testing of
delayed start or cycle finished modes.
Therefore, today’s final rule is
consistent with DOE’s proposal to
specify that each wash cycle included as
part of the energy test cycle comprises
the entire active washing mode, and
excludes any delay start or cycle
finished modes. In today’s final rule,
this clarification is provided in a new
Part (E) of the energy test cycle
definition.
In addition, as described previously
in section III.B.2.d, today’s final rule
also does not require the testing of selfclean mode. Therefore, today’s final
clarifies that the energy test cycle shall
not include any cycle, if available, that
is dedicated for cleaning, deodorizing,
or sanitizing the clothes washer, and is
separate from clothes washing cycles.
This should prevent confusion as to
whether the self-clean cycle should be
considered eligible for testing under
Part (B) if, for example, the self-clean
cycle used one of the temperature
selections not available in the cycle
tested in Part (A) (e.g. extra-hot). In
today’s final rule, this clarification is
provided in a new Part (F) of the energy
test cycle definition.
New Section 2.13
AHAM proposed modifying the
language in the newly proposed section
2.13 by: (1) Using the term ‘‘temperature
selection’’ instead of ‘‘temperature
combination’’; (2) specifying that testing
under section 2.13 applies only to
temperature selections for which TUFs
have been developed and TUFs not
represented in the cycle setting
represented in Part (A) of the energy test
cycle definition; and (3) specifying that
each TUF available on the product
should be tested only once. Whirlpool
also suggested clarifying that section
2.13 applies only to temperature
selections for which TUFs have been
developed. GE commented that it agrees
with AHAM’s proposed modifications
for section 2.13. (AHAM, No. 34 at pp.
6–7; Whirlpool, No. 33 at p. 2; GE, No.
35 at p. 2)
For the reasons described in the
previous sections regarding the energy
test cycle definition, DOE concurs with
AHAM and manufacturers’ suggestions
regarding the term ‘‘temperature
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selection’’ and the need to specify that
testing under section 2.13 applies only
to temperature selections for which
TUFs have been developed and which
are not represented in the cycle tested
under Part (A).
DOE has determined that it is
unnecessary and potentially confusing
to modify the language in section 2.13
to specify that each TUF available on
the product should be tested only once.
The provisions set forth in Part (B) of
the revised definition of energy cycle
clarify that each TUF shall be tested
once. DOE notes, however, that each
TUF being considered under the
exploratory testing provisions of section
2.13 might need to be tested on different
cycle selections to determine which
cycle selection uses the most energy.
For these reasons, DOE does not adopt
the proposed clarification in section
2.13 that each TUF available on the
product should be tested only once.
Today’s final rule also modifies the
structure of section 2.13 by separating
the individual provisions into
subsections 2.13.1 through 2.13.5,
which should improve the clarity of this
section.
Reporting Requirements
AHAM and GE requested clarification
on what specific data will be made
public with regards to the alternate
cycle settings tested in Part (B). (AHAM,
No. 34 at p. 7; GE, No. 35 at p. 2)
Similarly, ALS requested clarification
regarding the requirement for
manufacturers to provide a list of all
cycle settings comprising the complete
energy test cycle for each basic model.
ALS requested that DOE make this
information publicly available to all
interested parties. (ALS, No. 32 at p. 1).
DOE does not intend to make the list
of all cycle settings comprising the
energy test cycle for each clothes washer
publicly available as part of a
manufacturer’s certification report. DOE
will respond to requests for this
information pursuant to its Freedom of
Information Act regulations at 10 CFR
part 1004. DOE acknowledges that
making this list publicly available could
reveal a manufacturer’s proprietary
strategies for achieving a competitive
advantage over its rivals. In addition,
the information could be used to
reverse-engineer the products or test
results of competitors. Irrespective of
requests from the public for this
information, DOE notes that it may
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make this information available to third
party laboratories that would be
involved in future DOE-initiated
compliance verification and
enforcement testing.
Today’s final rule modifies the
reporting requirements in 10 CFR
429.20 by specifying that a certification
report shall include publicly available
information including MEF, WF, and
capacity. The report would also include
the list of cycle settings comprising the
complete energy test cycle for each basic
model, which DOE does not intend to
make publicly available as part of the
report. The requirement to provide the
list of cycle settings comprising the
complete energy test cycle will apply
only to test results obtained using
appendix J2.
5. Capacity Measurement Method
The test procedure in appendix J1
requires measuring clothes container
capacity as ‘‘the entire volume which a
dry clothes load could occupy within
the clothes container during washer
operation.’’ The procedure involves
filling the clothes container with water,
and determining the volume based on
the weight of the added water divided
by its density. Specifically, the test
procedure requires that the clothes
container be filled manually with either
60 °F ± 5 °F (15.6 °C ± 2.8 °C) or 100
°F ± 10 °F (37.8 °C ± 5.5 °C) water to
its ‘‘uppermost edge.’’
DOE recognized that this specification
of the water fill level could lead to
multiple interpretations and, in some
cases, capacity measurements that may
not reflect the actual volume in which
cleaning performance of the clothes
could be maintained. After considering
comments from interested parties on a
proposed interpretation of the existing
methodology in appendix J1, DOE
issued guidance on identifying the
maximum fill level using the appendix
J1 test procedure. This guidance, issued
on July 26, 2010, is available at https://
www1.eere.energy.gov/buildings/
appliance_standards/residential/pdfs/
cw_guidance_faq.pdf, hereafter referred
to as the ‘‘capacity guidance.’’ Figure
III.1 and Figure III.2 show the
schematics presented in the capacity
guidance, which indicate possible
interpretations of the maximum fill
level in appendix J1.
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Figure III.1 indicates four possible fill
levels for vertical axis (top-loading)
clothes washers:
• ‘‘Fill Level 1’’ represents the level
immediately below the bottom edge of
the balance ring, which typically
corresponds to the recommended
maximum fill level according to
manufacturer instructions.
• ‘‘Fill Level 2’’ represents the
uppermost edge of the rotating portion
of the wash basket, which corresponds
to the fill level proposed in the
September 2010 NOPR.
• ‘‘Fill Level 3’’ represents the highest
point of the inner-most diameter of the
tub cover.
• ‘‘Fill Level 4’’ represents the highest
edge on the tub cover.
1 DOE is aware of at least one top-loading,
horizontal-axis clothes washer on the market. Based
on its geometry, the capacity guidance for this type
of clothes washer would be the same as the
guidance for front-loading, horizontal-axis clothes
washers.
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For the purpose of issuing guidance,
DOE determined that the maximum fill
level referred to in the appendix J1 test
procedure (i.e., the ‘‘uppermost edge’’)
is the highest horizontal plane that a dry
clothes load could occupy with the
clothes container oriented vertically.
For top-loading clothes washers, this is
identified as Fill Level 3 in Figure III.1.
In Figure III.2, the volumes contained
within the dotted lines indicate the fill
volumes for horizontal-axis (both frontloading and top-loading) clothes
washers with convex doors, concave
doors, or top-loading doors.
DOE considered whether to amend
the fill level specification in this
rulemaking to provide additional clarity
and ensure that the capacity is
representative of the volume available to
achieve real-world cleaning
performance. Prior to publication of the
September 2010 NOPR, DOE conducted
capacity tests on a sample of residential
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clothes washers to observe how
different interpretations of the
maximum fill level could lead to
different measured capacities for the
same machine. For top-loading clothes
washers, DOE’s test sample showed that
the majority of rated capacity values
varied from the Fill Level 3 value, some
by as much as 0.5 ft3. For front-loading
clothes washers, the majority of rated
capacity values closely corresponded to
DOE’s measured values according to the
fill volume shown in the capacity
guidance.
DOE also tentatively concluded for
top-loading clothes washers that Fill
Level 3, which was specified in the
capacity guidance, may not reflect the
actual usable capacity for washing a
load of clothes while maintaining
cleaning performance. This is because
Fill Level 3 may include space above
the upper surface of the rotating wash
tub or balance ring. In most cases, if
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clothes were located in that region
during a wash cycle, that portion of the
load would likely not interact with
water and detergent properly,
particularly since wash water cannot be
contained between Fill Level 2 and Fill
Level 3 during operation. Entanglement
of the clothing could also occur.
Therefore, in the September 2010
NOPR, DOE proposed the following fill
levels to provide for a more
representative capacity measurement:
• For top-loading clothes washers,
DOE proposed that the clothes container
be filled to the uppermost edge of the
rotating portion, including any balance
ring. This corresponds to Fill Level 2 in
Figure III.1.
• For front-loading clothes washers,
DOE proposed that the clothes container
be filled to the uppermost edge that is
in contact with the door seal.
For both top-loading and frontloading clothes washers, any volume
within the clothes container that a
clothing load could not occupy during
active washing mode operation would
be excluded from the measurement.
BSH, the California Utilities, the Joint
Commenters, and NEEA support the
proposal for measuring the volume of
the clothes container. BSH stated that if
clothing should not occupy an area, that
volume should be excluded from the
clothes container capacity
measurement. According to BSH, if an
area not occupied by clothing were to be
measured, top-loading washers would
have an unfair advantage over frontloading washers, which have no such
area. According to BSH, due to the
space needed for agitation, the volume
of the clothes container can be larger in
top-loading washers, yet offer the
consumer a smaller available space to
load clothing. (BSH, No. 17 at p. 4) The
California Utilities and NEEA agree that
the capacity measurement should
include the entire volume that a dry
clothes load could occupy within the
clothes container during washer
operation. NEEA stated that this method
is an improvement over the previous
guidance and will result in consistent,
accurate measurements for all clothes
washer models. (California Utilities, No.
18 at pp. 4–5; NEEA, No. 12 at p. 13;
NEEA, Public Meeting Transcript, No.
20 at p. 177) The Joint Commenters
stated that the proposed methodology
would ensure that only the space that is
capable of being filled with clothes
while maintaining proper wash
performance is included in the capacity
measurement. (Joint Commenters, No.
16 at p. 8).
AHAM, ALS, and Whirlpool oppose
the proposed clothes container capacity
measurement. AHAM stated that the
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proposed methodology is ambiguous
and does not provide for a
representative, repeatable, or
reproducible measurement of clothes
container volume. AHAM stated that
DOE appears to be applying a new
interpretation to an existing definition,
as there is no change in the definition
of the clothes container from the
existing appendix J1 to the proposed
appendix J2. According to AHAM, there
is significant harm in DOE continuing to
change its position on the capacity
measurement procedure, as it results in
a lack of clarity and certainty to the
industry, which in turn creates
confusion for consumers since machines
need to be re-tested and potentially rerated (and thus, re-labeled) each time
the capacity measurement changes.
AHAM further commented that the cost
associated with re-testing, re-rating, and
re-labeling is significant. (AHAM, No.
14 at p. 14) AHAM proposes that DOE
codify the final capacity guidance on
clothes container capacity measurement
without change. AHAM and Whirlpool
noted that a significant amount of work
on the part of DOE and stakeholders
went into the capacity guidance, and the
result was a clear, repeatable,
reproducible method for measuring
drum volume. AHAM and Whirlpool
also stated that the capacity guidance
addresses the objective that the clothing
remain within the clothes container for
an entire operating cycle, noting that
filling the clothes container slightly
above the balance ring with dry clothing
will cause the clothing to remain in the
clothes container during the entire
operating cycle, because clothes sink as
they are wetted. (AHAM, No. 14 at pp.
14–15; AHAM, Public Meeting
Transcript, No. 20 at pp. 165–167;
Whirlpool, No. 13 at p. 12; Whirlpool,
Public Meeting Transcript, No. 20 at pp.
167–168, 173–174) Whirlpool stated
that its field use studies have shown
that customers load the clothes
container above the fill level specified
in the capacity guidance, and that the
maximum load size specified in the
DOE test procedure, when loosely
loaded, exceeds that fill level.
Whirlpool further noted that the
Underwriters Laboratories (UL) safety
test limit for clothes washers is an even
higher fill level. Whirlpool commented
that measurements at the fill level
specified in the capacity guidance can
be as repeatable and reproducible as the
proposed fill level. Whirlpool suggested
that if DOE questions repeatability and
reproducibility, it could require
manufacturers to mold a mark at the
point on the tub cover at which the
clothes container capacity measurement
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is taken. (Whirlpool, No. 13 at p. 12)
ALS opposes the proposed clothes
container capacity measurement, stating
that manufacturers have based their
designs on DOE’s capacity guidance for
appendix J1. According to ALS, toploading clothes washers would be rated
as having a lower capacity under DOE’s
proposal because ‘‘the uppermost edge
of the rotating portion’’ is typically
below the fill level defined in the
capacity guidance. (ALS, No. 10 at p. 4).
DOE believes that the procedure for
measuring clothes washer capacity
should reflect the actual usable capacity
for washing clothes while maintaining
cleaning performance. For front-loading
clothes washers, interested parties
generally support the proposed
methodology for measuring clothes
container capacity. For top-loading
clothes washers, DOE acknowledges the
effort that went into developing the
capacity guidance for the current
appendix J1 test procedure. DOE
believes that, given the construct of the
capacity measurement procedure in
appendix J1, the capacity guidance
provides improved clarity, repeatability,
and reproducibility to the current test
procedure. For this rulemaking,
however, DOE re-evaluated all aspects
of the clothes container capacity
measurement and concluded that the
capacity measurement specified in
appendix J2 maximizes clarity,
repeatability, reproducibility, and
consumer relevance.
First, while DOE did not change the
definition of ‘‘clothes container’’, the
upper boundary of the ‘‘clothes
container’’ is not explicitly defined in
the current clothes washer test
procedure at appendix J1. Section 3.1 of
appendix J1 requires the measurement
of ‘‘the entire volume which a dry
clothes load could occupy within the
clothes container during washer
operation.’’ DOE did not propose to
change the language in section 3.1 for
appendix J2 in the September 2010
NOPR. After considering comments on
the related proposal to amend the fill
level in section 3.1.4, however, DOE
acknowledges that a volume of dry
clothing may not correspond to the
same volume of wet clothing in a
clothes washer, because loosely packed
clothing often compacts once it becomes
wet. The maximum volume of a dry
clothing load could vary considerably
based on the density, stiffness,
absorption, and other properties of the
material composition. Therefore, DOE
concludes that it is not meaningful to
base the capacity measurement on the
volume that dry clothes could occupy.
Instead, the revised capacity
measurement provisions in today’s final
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rule, particularly those for top-loading
clothes washers, more appropriately
represent the actual usable volume of
the clothes container during the active
mode portion of washer operation.
Today’s final rule provides revised
language in section 3.1 of appendix J2
that removes the qualification that the
clothes load be dry, and instead
specifies that the clothes load could
occupy the volume during ‘‘active mode
washer operation.’’
In determining the appropriate fill
level for the capacity measurement,
DOE notes that the current capacity
guidance is accompanied by a set of
diagrams illustrating Fill Level 3 for a
variety of top-loading clothes washer
tub cover designs. DOE has, however,
observed significant variation in tub
cover designs among products from
different manufacturers, as well as
within individual manufacturers’
product lines, and DOE continues to
receive requests for clarification on tub
cover shapes not included in the
diagrams. In addition, DOE has
observed some tub covers with varying
heights around the inner-most diameter,
and in these cases, the ‘‘highest point of
the inner-most diameter’’ may not be the
most appropriate fill height. For these
machines, determining the maximum
fill level can require the subjective
judgment of the test laboratory. DOE’s
testing indicates that Fill Level 2, as
proposed in the September 2010 NOPR
and defined as ‘‘the uppermost edge of
the rotating portion, including any
balance ring,’’ provides a much clearer
reference point. DOE has observed
significantly less variation in balance
ring designs among manufacturers
compared to tub cover designs. For
these reasons, DOE has determined that
Fill Level 2 offers greater clarity than
Fill Level 3, which would also result in
greater repeatability and reproducibility.
DOE also believes that the proposed
Fill Level 2 is more consumer-relevant
than Fill Level 3. DOE acknowledges
that if a consumer loaded a top-loading
machine with clothing as high as Fill
Level 3 (or higher), the clothing would
likely sink to a lower level within the
clothes container as the load is wetted.
DOE has observed, however, that
virtually all of the clothes washer user
manuals it reviewed direct the
consumer to load clothing no higher
than the highest drain holes in the wash
basket, which typically corresponds to
the point at which the wash basket
meets the lower edge of the balance ring
(corresponding to Fill Level 1 in Figure
III.1). DOE believes that, by respecting
manufacturer recommendations, Fill
Level 1 would best ensure wash
performance is maintained, and thus is
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the most consumer-relevant. DOE
further believes that should clothing
occupy the space between Fill Level 1
and Fill Level 2 during a wash cycle, the
clothing could be cleaned sufficiently
because water can still be contained
within that volume. Clothing above Fill
Level 2, however, is not likely to be
cleaned sufficiently because it would be
outside the wash basket during the wash
cycle. Additionally, clothing that
occupies space above Fill Level 2 risks
being damaged if it becomes entangled
on stationary fixtures such as the tub
cover or other mechanical components
of the washer during the wash cycle.
Furthermore, certain design changes
to the shape of the inner diameter of the
tub cover (Fill Level 3) can be
incorporated that would result in an
increase of the measured capacity with
no corresponding increase in real-world
usable capacity, because wash water
cannot be contained between Fill Level
2 and Fill Level 3. Increasing the height
of the balance ring (Fill Level 2),
however, would correspond to a real
increase in usable capacity from the
consumer’s perspective, since the wash
water could be contained up to the top
of the balance ring.
For these reasons, today’s final rule
adopts the clothes container capacity
measurement provisions for top-loading
clothes washers as proposed in the
September 2010 NOPR. The change will
be incorporated into appendix J2, which
will not need to be used to demonstrate
compliance until the compliance date of
any amended standards for these
products.
Whirlpool stated that, to achieve
parity between top-loading and frontloading machines using the proposed
clothes container capacity
measurement, the test procedure when
applied to front-loading clothes washers
must (1) require removal of the bellows
prior to measurement; and (2) require
that the shipping bolts remain in place,
as was specified in the capacity
guidance, to prevent sagging of the
basket when the machine is tipped on
its back. (Whirlpool, No. 13 at p. 13;
Whirlpool, Public Meeting Transcript,
No. 20 at pp. 178–180) BSH stated that
the definition of shipping bolts is not
clear. (BSH, Public Meeting Transcript,
No. 20 at p. 179).
For front-loading clothes washers,
DOE agrees that the shipping bolts
should remain in place during the
capacity measurement to prevent the
clothes container from sagging
downward when filled with water,
which would stretch the door gasket
(also referred to as the bellows), creating
additional volume that the clothes load
could not occupy during actual washer
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operation. Downward sagging could also
cause damage to the clothes container
structure during the test. DOE has also
determined that the gasket should
remain in place for the capacity
measurement, because some portion of
the gasket may occupy the volume
available for the clothes load when the
door is closed, and this volume should
be excluded from the measured
capacity. For these reasons, today’s final
rule adds to the provisions proposed in
the September 2010 NOPR by specifying
that the shipping bolts and door gasket
shall remain in place during the
capacity measurement for front-loading
clothes washers.
AHAM, the California Utilities, LG,
NRDC, and Springboard commented
that DOE should add diagrams to the
test procedure for clarity in interpreting
the clothes container capacity
measurement, similar to what was
provided in the capacity guidance. LG
further stated that the diagram for toploading clothes washers should label the
balance ring to indicate the fill level.
(AHAM, Public Meeting Transcript, No.
20 at pp. 174–175; California Utilities,
No. 18 at pp. 4–5; LG, Public Meeting
Transcript, No. 20 at pp. 177–178;
NRDC, Public Meeting Transcript, No.
20 at p. 175; Springboard, No. 11 at p.
1) NRDC requested clarification as to
whether the clothes container capacity
for front-loading clothes washers should
be measured with the door opened or
closed. (NRDC, Public Meeting
Transcript, No. 20 at pp. 161–165).
DOE has observed a broad range of
designs and configurations of the key
components of the clothes container
among products already available on the
market, and expects that other designs
could be introduced in future clothes
washers. DOE will continue to publish
the fill level diagrams, updated as
necessary for new designs, on its Web
site at https://www1.eere.energy.gov/
buildings/appliance_standards/
residential/clothes_washers.html.
6. Test Cloth, Detergent, and
Preconditioning Test Equipment
Multiple interested parties submitted
comments regarding the use of test cloth
in response to the August 2009
standards framework document. Based
on these comments, DOE proposed in
the September 2010 NOPR a number of
amendments related to test cloth,
detergent, and other preconditioning
test equipment.
DOE received multiple comments that
generally responded to DOE’s proposed
test cloth provisions. AHAM submitted
recommendations for test cloth
specifications, and commented that
DOE should incorporate them to
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improve reproducibility. (AHAM, No. 2
at p. 23; AHAM, No. 14 at p. 14) Some
of AHAM’s comments reflect the
recommendations of the AHAM Energy
Test Cloth Task Force, which was
formed in February 2008 to identify and
address appliance manufacturers’
concerns pertaining to Lot 15 test cloth.
The specific objectives of the AHAM
Energy Test Cloth Task Force were to
investigate test cloth consistency and
RMC measurement process variation.
The Task Force is comprised of BSH,
Electrolux, General Electric, Samsung,
Whirlpool Corporation, and SDL Atlas.
(AHAM, No. 4 at p. 4) ALS stated that
it supports AHAM’s test cloth proposal.
(ALS, No. 10 at p. 4) NEEA commented
that the proposed test cloth procedures
and specifications are reasonable.
(NEEA, No. 12 at p. 13) Whirlpool
supports the proposed test cloth
changes with additional
recommendations for extractor testing.
(Whirlpool, No. 13 at p. 11–12) The
sections below provide additional
details regarding each proposed
amendment related to the test cloth, as
well as responses to comments on
specific test cloth provisions proposed
in the September 2010 NOPR and
August 2011 SNOPR.
Test Cloth Definitions
In response to the September 2010
NOPR, AHAM commented that a test
cloth ‘‘lot’’ should be defined as ‘‘a
quantity of cloth that has been
manufactured with the same batches of
cotton and polyester during one
continuous process. The cotton and
polyester for each lot can come from
only one supplier. The supplier is
responsible for manufacturing the raw
materials consistently to ensure
uniformity.’’ AHAM also recommended
that ‘‘roll’’ be defined as ‘‘a subset of a
lot.’’ AHAM stated that a requirement
should be added to section 2.6.1 that all
energy test cloth must be permanently
marked, identifying the roll number as
well as lot number of the material, and
that in section 2.6.5.2, ‘‘[t]est loads shall
be comprised of randomly selected cloth
at the beginning, middle, and end of a
lot.’’ AHAM commented that the test
procedure should contain test cloth
quality control provisions for
identifying the roll number and
evaluating the consistency of the lot by
means of an advisory board, which
would approve the lot of test cloth prior
to sale, ensuring that the coefficient of
variation from the average RMC value
from each roll would be less than 1
percent. According to AHAM, the
advisory board would consist of a
representative from DOE, AHAM, each
automatic washer appliance
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manufacturer, and test cloth supplier,
and that the board’s purpose would be
to review and approve each new test
cloth lot, new cloth suppliers, and
correction factor test facilities. (AHAM,
No. 4 at p. 4; AHAM, No. 14 at pp. 14,
19–20, 23, 26, 28)
DOE’s test procedure is intended to
define material properties of the test
cloth sufficiently narrowly as to ensure
accuracy and repeatability of the test
procedure, and provide procedures to
normalize test results to account for
allowable variations in the test cloth
properties. DOE notes that a supplier
may elect to provide additional
identifying information, including roll
number, on the test cloth as it deems
appropriate. DOE agrees with AHAM
that definitions of ‘‘lot’’ and ‘‘roll’’
would clarify the existing provisions
regarding the energy test cloth, and is
adopting in today’s final rule the
definition of lot as ‘‘a quantity of cloth
that has been manufactured with the
same batches of cotton and polyester
during one continuous process.’’ The
specification of ‘‘same batches of cotton
and polyester during one continuous
process’’ essentially requires these raw
materials to come from a single
supplier; therefore, DOE is not
including such a qualification in the
definition. DOE is also adopting in
today’s final rule the definition of ‘‘roll’’
as ‘‘a subset of a lot.’’
Energy Test Cloth Size and Weight
Tolerances
The existing clothes washer test
procedure does not specify any
tolerances for the size and weight of the
energy test cloths. In the September
2010 NOPR, DOE proposed the
following tolerances for the test cloth:
• In section 2.6.1, ‘‘Energy Test Cloth,’’ the
energy test cloth shall be 24 ± 1⁄2 inches by
36 ± 1⁄2 inches (61.0 ± 1.3 cm by 91.4 ± 1.3
cm) and hemmed to 22 ± 1⁄2 inches by 34 ±
1⁄2 inches (55.9 ± 1.3 cm by 86.4 ± 1.3 cm)
before washing;
• In section 2.6.2, ‘‘Energy Stuffer Cloth,’’
the energy stuffer cloth shall be 12 ± 1⁄4
inches by 12 ± 1⁄4 inches (30.5 ± .6 cm by 30.5
± .6 cm) and hemmed to 10 ± 1⁄4 inches by
10 ± 1⁄4 inches (25.4 ± .6 cm by 25.4 ± 0.6
cm) before washing; and
• In section 2.6.4.2, the fabric weight
specification shall be 5.60 ± 0.25 ounces per
square yard (190.0 ± 8.4 g/m2).
In addition, DOE proposed to create a
new specification for maximum
shrinkage in section 2.6.4.7 based on the
American Association of Textile
Chemists and Colorists (AATCC) Test
Method 135–2004. DOE proposed to
increase the previous shrinkage limit
from four percent to five percent. In the
August 2011 SNOPR, DOE proposed
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13921
using the most recent version of this
standard, AATCC Test Method 135–
2010.
AHAM commented that the test cloth
dimensional properties should be
refined to match supplier capability,
including length, width, fabric weight,
and shrinkage properties. (AHAM, No. 4
at p. 4) DOE notes that the size
tolerances and test cloth weight
proposed in the September 2010 NOPR
are identical to those in AHAM’s
proposed changes to the DOE clothes
washer test procedure, which AHAM
included as part of its written comment.
AHAM noted in the written comment
that these specifications were supported
by supplier data, and thus DOE is
adopting the proposed test cloth
dimensions and weight in today’s final
rule.
AHAM supports DOE’s proposal to
add the newly referenced AATCC Test
Method 135 for measuring shrinkage of
the energy test cloth, and supports
increasing the shrinkage limit from four
percent to five percent. Today’s final
rule specifies a maximum shrinkage
limit of five percent, to be measured
using AATCC Test Method 135–2010.
(AHAM, No., 14 at p. 16; AHAM, No. 24
at p. 5).
Detergent Specification and Dosage
In the September 2010 NOPR, DOE
proposed amending the clothes washer
test procedure to specify the use of the
AHAM standard test detergent Formula
3 in test cloth preconditioning, at a
dosing of 27.0 g + 4.0 g/lb.
ALS supported DOE’s proposal to
specify the use of AHAM standard
detergent Formula 3 in test cloth
preconditioning as well as the proposal
to follow the instructions included with
the detergent, because it makes the
dosing identical to that of the dryer test
load preconditioning procedure. (ALS,
No. 10 at p. 5) NEEA stated that it
foresees no problem with, and some
benefit from, adopting the AHAM
detergent specification. (NEEA, No. 12
at p. 14) Whirlpool stated that the
proposed detergent formulation and
dosage changes are consistent with
AHAM Standard HLD–1–2009, which
Whirlpool supports. (Whirlpool, No. 13
at p. 14; Whirlpool, No. 27 at p. 4)
AHAM supported DOE’s proposal to
amend the test procedure to specify the
use of AHAM standard test detergent
Formula 3 in test cloth preconditioning
at a dosing of 27.0 g + 4.0 g/lb (AHAM,
No. 14 at p. 15; AHAM, Public Meeting
Transcript, No. 20 at pp. 194–195;
AHAM, No. 24 at p. 6).
For the reasons stated above and in
the September 2010 NOPR, today’s final
rule specifies the use of AHAM standard
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test detergent Formula 3 in test cloth
preconditioning, at a dosing of 27.0 g +
4.0 g/lb, in both appendix J1 and the
new appendix J2.
Test Cloth Preconditioning Wash
Requirements
Section 2.6.3.1 of the current DOE
clothes washer test procedure specifies
preconditioning the test cloths using a
clothes washer in which the load can be
washed for 10 minutes at the maximum
water level and a wash temperature of
135 °F ± 5 °F (57.2 °C ± 2.8 °C).
DOE noted in the September 2010
NOPR that multiple manufacturers
expressed concern during manufacturer
interviews that there are currently few
clothes washers commercially available
that meet these requirements. The
manufacturers also expressed concern
that the more stringent energy
conservation standards that may result
from the residential clothes washer
standards rulemaking may eliminate
such clothes washer models from the
market entirely. DOE did not propose
any updates to the preconditioning
clothes washer specifications in the
September 2010 NOPR, but sought
information regarding an alternative
specification for the clothes washer to
be used for preconditioning that would
allow for the use of more recent models.
DOE received the following
information and comments from
interested parties regarding the clothes
washer requirements for test cloth
preconditioning.
ALS stated that clothes washers will
be available after the next DOE
minimum efficiency standards for
clothes washers take effect that can
adequately precondition the test cloth.
ALS believes there is adequate time to
learn of any differences that may occur
with new clothes washer designs.
Furthermore, ALS suggested that
manufacturers and certification test labs
could purchase and maintain inventory
of the current design of agitator-style,
vertical-axis clothes washers that ALS
manufactures. (ALS, No. 10 at p. 5).
Whirlpool stated that top-loading
clothes washers with a deep-fill rinse
option will continue to be available for
quite some time. Agitator-based models
may no longer be viable at some point
in the future, but impeller-based models
should be available. (Whirlpool, No. 13
at p. 14).
AHAM stated that the key attributes
for the clothes washer used for
preconditioning are that it be able to
achieve good rinsing and be able to get
the test cloth to its final size. AHAM
stated that there will be clothes washers
capable of good rinsing and getting the
test cloth to its final size at least through
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year 2018. AHAM stated that
manufacturers may need to select a
fabric softener cycle to achieve those
goals, for example, but the goals are
workable with current machines.
(AHAM, No. 14 at p. 16).
BSH commented that it does not
foresee any problems meeting the test
cloth pre-conditioning method outlined
by DOE. The method asks for maximum
water level and a fixed temperature for
wash and rinse water. BSH stated that
it can internally create a clothes washer
that meets the specified temperatures.
BSH added that since maximum water
level is not defined as a specific
quantity, using the maximum water
level for washing in BSH clothes
washers would meet the standard. (BSH,
No. 17 at p. 5; BSH, Public Meeting
Transcript, No. 20 at p. 198–199) BSH
commented further that it does not want
to see one specific product model
specified for pre-conditioning, as this
would limit the ability to keep current
equipment in laboratories. As the model
is replaced in the market by its
manufacturer, access and ability to test
would be affected in all laboratories.
BSH supports AHAM’s comment that
the primary goals are to achieve good
rinsing and assure that the cloth reaches
its final size before testing. (BSH, No. 17
at p. 5) As an alternative, BSH would
support the IEC test cloth preconditioning method if the Department
believes it to be appropriate. (BSH, No.
17 at p. 5).
NEEA commented that participants at
the October 2010 public meeting
generally agreed that the clothes washer
characteristics specified for test cloth
preconditioning may no longer be
available, or will soon be unavailable.
According to NEEA, it was not made
clear by manufacturers at the meeting
exactly which characteristics were a
problem, i.e., relatively high water
temperature, a ten minute wash, or the
ability to specify the water level. NEEA
believes the best course of action would
be to provide the rationale for the
current specifications, and then propose
an alternative set of clothes washer
specifications that manufacturers could
assure DOE will be commonly available,
yet would result in preconditioning
performance that closely approximates
that of the current specification. (NEEA,
No. 12 at p. 14; NEEA, Public Meeting
Transcript, No. 20 at pp. 200–201).
DOE’s intended goals for the test cloth
preconditioning are to remove any
chemical residues or other finishes that
may be present on the surface of the test
cloth and to subject each test cloth to a
series of wash/rinse/dry cycles to
induce any shrinking that may occur, so
that each test cloth achieves its final
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size before being used for testing.
Achieving these goals requires the use
of detergent, an adequate quantity of hot
water for the wash and cold water for
the rinse, and a minimum temperature
in the preconditioning dryer.
In consideration of comments from
interested parties, DOE expects that
clothes washers capable of meeting the
test cloth preconditioning requirements
will continue to be available after the
revised energy efficiency standards for
clothes washer become effective. Based
on the recommendations provided by
AHAM, DOE amends the test cloth
preconditioning requirements to specify
that a minimum of 20 gallons of water
be used in each wash/rinse/spin cycle
during test cloth preconditioning.
However, DOE is not otherwise
changing the preconditioning
requirements of section 2.6.3.1.
AATCC Test Methods
Section 2.6.4.5.3 of the existing test
procedure incorporates by reference
standards for verifying the absence of
water repellent finishes on the energy
test cloth: AATCC Test Method 118–
1997, ‘‘Oil Repellency: Hydrocarbon
Resistance Test’’ and AATCC Test
Method 79–2000, ‘‘Absorbency of
Textiles.’’ To be consistent with
referenced standards in other DOE test
procedures, DOE proposed in the
September 2010 NOPR to remove this
paragraph from the clothes washer test
procedure and, instead, include these
two AATCC test procedures in 10 CFR
part 430.3, ‘‘Materials Incorporated by
Reference.’’ In addition, DOE proposed
adding to 10 CFR part 430.3 the newlyreferenced AATCC Test Method 135–
2004, ‘‘Dimensional Changes of Fabrics
after Home Laundering’’ for measuring
shrinkage of the energy test cloth, which
is referenced in section 2.6.4.7 of the
revised test procedure.
AHAM supports DOE’s proposal to
move the reference to standards
incorporated by reference from the test
procedure in appendix J1 to the
regulatory text at 10 CFR 430.3. The
reference will also be applicable to
appendix J2. (AHAM, No. 14 at p. 16)
For the reasons stated above and in
the September 2010 SNOPR, today’s
final rule implements the changes
proposed in the September 2010 NOPR,
as described above. Today’s final rule
also corrects a typographical error from
the November 2011 SNOPR in the
mailing address for AATCC. The correct
address is P.O. Box 12215. Today’s final
rule also updates the contact telephone
number to (919) 549–3526, which is
listed on the cover page of the current
versions of the AATCC standards.
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Required Extractor Tests
The current DOE test procedure uses
extractor tests of up to 500 units of
gravitational acceleration (g, or g-force)
in determining the RMC correlation
curve for test cloth lots. DOE is aware
of clothes washers currently available
on the market capable of reaching gforces higher than 500 g.
DOE therefore proposed in the
September 2010 NOPR to include an
additional set of extraction tests at 650
g. Because of the prevalence of higher
spin speeds in clothes washers available
on the market, DOE also proposed to
remove the requirement that the 500 g
condition be required only if a clothes
washer can achieve spin speeds in the
500 g range. These proposed
amendments would result in 60
extractor RMC test runs being required
for correlation testing rather than the
currently-required 48. DOE also
proposed to update Table 2.6.5—Matrix
of Extractor RMC Test Conditions, and
Table 2.6.6.1—Standard RMC Values
(RMC Standard) in the test procedure to
include tests at 650 g. The proposed
updated Table 2.6.6.1 is shown below as
Table III.5, and it contains the
additional standard RMC values at 650
g that were suggested by AHAM and
supported by the AHAM Energy Test
Cloth Task Force.
TABLE III.5—STANDARD RMC VALUES (RMC STANDARD)—PROPOSED IN SEPTEMBER 2010 NOPR
RMC percentage
‘‘g Force’’
Warm soak
Cold soak
15 min. spin
100
200
350
500
650
15 min. spin
4 min. spin
45.9
35.7
29.6
24.2
23.0
49.9
40.4
33.1
28.7
26.4
49.7
37.9
30.7
25.5
24.1
52.8
43.1
35.8
30.0
28.0
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
In response to the September 2010
NOPR, AHAM reiterated its
recommendation to require the 500 g
condition for all test cloth lots and to
add a 650 g condition to the extractor
RMC test runs to reflect higher spin
speeds in current clothes washers.
AHAM also supported the standard
RMC values proposed for each of these
extraction conditions. (AHAM, No. 4 at
p. 4; AHAM, No. 14 at pp. 26–28).
Today’s final rule is consistent with
the September 2010 NOPR. It requires
the 500 g extraction for all test cloth lots
and adds a 650 g extraction test in Table
2.6.5 and Table 2.6.6.1 of the revised
test procedure.
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4 min. spin
Extractor Specification
In the September 2010 NOPR, DOE
proposed to update the manufacturer
specified for the extractor from Bock
Engineered Products to North Star
Engineered Products, Inc. DOE also
noted that North Star Engineered
Products, Inc. operates at the same
location and supplies the same model of
extractor as the previously specified
Bock Engineered Products.
AHAM and Whirlpool agreed that the
standard extractor RMC tests should be
run in a North Star Engineered
Products, Inc. (formerly Bock) Model
215 extractor, but added that the basket
diameter should be 20 inches and the
basket height should be 11.5 inches.
(AHAM, No. 14 at p. 26; Whirlpool, No.
13 at p. 11) AHAM and Whirlpool stated
that the extractor should be calibrated to
meet the acceleration profiles shown in
Table III.6 (AHAM, No. 14 at p. 26;
Whirlpool, No. 13 at p. 11):
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TABLE III.6—AHAM AND WHIRLPOOL- deviation from the intended centripetal
RECOMMENDED EXTRACTOR CALI- acceleration level for each extractor test,
BRATION
RPM
‘‘g’’ Force
594 ± 5 .............
840 ± 5 .............
1111 ± 5 ...........
1328 ± 5 ...........
1514 ± 5 ...........
100
200
350
500
650
RPM/S
(spin-up
acceleration)
46
42
38
36
35
±
±
±
±
±
3
3
3
3
3
AHAM and Whirlpool stated that the
timers for different extractors made by
the same manufacturer start measuring
time at different conditions; i.e., they
may start timing immediately when the
extractor starts or they may start timing
only when the requested spin speed is
attained. AHAM and Whirlpool
requested that DOE clarify the start time
for extractor tests. (AHAM, No. 14 at p.
26; Whirlpool, No. 13 at p. 11).
DOE concurs with AHAM and
Whirlpool that the extractor model and
basket dimensions should be updated to
accurately describe the North Star
Engineered Products Inc., (formerly
Bock) Model 215 extractor.
Regarding AHAM and Whirlpool’s
suggested extractor calibration, DOE
agrees that the nominal revolutions per
minute (RPM) listed in Table III.6 will
produce the desired g-force levels for a
20-inch diameter basket. However,
DOE’s analysis indicates that specifying
an allowable range of ±5 RPM would
result in too large of a deviation from
the specified g-force. Section 2.6.5.3.3 in
the current test procedure allows a ±1 g
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and today’s final rule maintains this
tolerance in the amended test
procedure. DOE notes that for an
extractor basket with a 20-inch
diameter, a deviation of ±5 RPM at the
100 g-force level would result in a ± 2
g deviation in g-force level; (i.e., a spin
speed of 599 RPM—instead of the
nominal 595 RPM—would result in 102
g-force). Likewise, a deviation of ±5
RPM at the 650 g-force level would
result in a ±4 g deviation in g-force
level. Therefore, today’s final rule
specifies an allowable range of ±1 RPM
for the extractor spin speed. This will
ensure that the maximum ±1 g deviation
from the intended g-force level will be
maintained for each spin speed. Based
on DOE’s internal extractor testing, DOE
has observed that the North Star Model
215 extractor is capable of maintaining
the spin speeds within ±1 RPM.
AHAM and Whirlpool also suggested
specifying the allowable spin-up time
for each test, implicitly determined by
the acceleration noted in the column
labeled RPM/S in Table III.6. This
suggestion was coupled with another to
start the extractor and the test timer
simultaneously. However, DOE has
observed that the user is unable to
adjust the spin-up time on the North
Star Model 215 extractor, and therefore,
specifying the spin-up time in the test
procedure could provide too rigid of a
constraint. Additionally, because the
amount of water extracted depends
primarily on the g-force exerted on the
test cloth, and because the g-force varies
as a function of the square of RPM, the
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period of time spent at full spin speed
will affect the amount of water extracted
much more than the time spent during
the extractor spin-up and spin-down
periods. Therefore, DOE believes that
specifying the time spent at full spin
speed is more important than specifying
a total test time that would include the
spin-up and spin-down time. For these
reasons, today’s final rule specifies that
the timer shall begin when the extractor
reaches the full required spin speed, but
does not specify an allowable spin-up
time for each test. DOE believes that this
approach will provide the most
consistent, repeatable test results among
all laboratories. DOE is aware that the
timer and control system on the North
Star Model 215 extractor can be
upgraded, if necessary, so that the timer
automatically starts when the extractor
reaches full speed.
Bone Dryer Specifications
In the September 2010 NOPR, DOE
proposed to update the requirements for
bone drying the test cloth in preparation
for determining the RMC of the test
loads in the extractor tests. The proposal
included a requirement in section 2.12
for using a clothes dryer capable of
heating the test cloth to above 210 °F (99
°C).
AHAM and Whirlpool suggested
clarifications to the methodology for the
bone drying procedure used before each
extractor test run. According to AHAM,
the procedure would state, ‘‘Place dry
load in a dryer and dry for 10 to 40
minutes depending on the load size.
Remove and weigh before cool down.
Continue drying for 10 minute periods
until the weight change is 1% or less.’’
AHAM and Whirlpool commented that
the dryer performance requirements
should state, ‘‘Dryer used for bone
drying must heat cloth above 210 deg F
(99 deg C).’’ AHAM added the
recommendation to ‘‘[r]ecord the end of
cycle bone dry test cloth temperature at
the end of the cycle.’’ (AHAM, No. 14
at p. 26; Whirlpool, No. 13 at p. 11).
Based on AHAM and Whirlpool’s
comments in support of DOE’s proposal,
today’s final rule adds a requirement
that the dryer used for bone drying must
heat the test cloth above 210 °F (99 °C).
DOE determined that specifying the
duration and methodology of the bone
drying procedure to be used during the
extractor tests, as AHAM suggested,
would be redundant because the
definition of ‘‘bone-dry’’ already
includes this information. Today’s final
rule specifies the bone drying
methodology to be used during the
extractor tests by referring to the
definition of ‘‘bone-dry’’ in the
definitions section of the test procedure,
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which will achieve the same objective
as AHAM’s proposal.
Today’s final rule does not
incorporate AHAM’s recommendation
to record the bone-dry test cloth
temperature at the end of the cycle. DOE
believes that this would add additional
test burden with little corresponding
benefit to the overall results of the test
procedure. The temperature
measurement of the test cloth at the end
of the dryer cycle would need to be
performed immediately upon
termination of the dryer cycle, before
the test cloth could begin to cool down.
This could present a logistical challenge
depending on the sequence of tests and
the number of laboratory technicians
performing the tests. In addition, AHAM
did not specify a method for measuring
the temperature of the test cloths, which
would be necessary to ensure accuracy
and repeatability. DOE believes that the
amended bone dryer temperature
specification, combined with the
definition of ‘‘bone-dry’’ already
included in the test procedure
definitions section, provide a sufficient
level of detail for conducting the test
cloth extractor tests.
Procedures for Preparing and Handling
Test Cloth Bundles
In the September 2010 NOPR, DOE
proposed clarifications to the
requirements for bundling and draining
the test cloth prior to completing the
extractor spin cycles. These
clarifications included procedures to
create loose bundles of four test cloths
each, as well as time limits of 5 seconds
for gravity draining the bundles after
soaking and 1 minute for overall
draining and loading of all bundles into
the extractor.
AHAM’s comments on the September
2010 NOPR included additional
recommended specifications for test
cloth preparation. Regarding the soak
period for the test cloth prior to
extraction testing, AHAM suggested
adding the requirement to maintain the
temperature ‘‘at all times between the
start and end of the soak’’ to the water
soak temperature requirement currently
in section 2.6.5.3.2 of appendix J1.
(AHAM, No. 14 at
p. 27).
AHAM further provided
recommended clarifications for the test
cloth used in the extractor tests.
According to AHAM, the test load
should be comprised of randomly
selected cloth at the beginning, middle,
and end of a lot, and that it would be
acceptable to use two test loads for
standard extractor RMC tests, with each
load used for half of the total of 60 tests.
AHAM commented that a testing
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constraint is the approximate 25-minute
‘‘soak and load’’ time for the test cloth,
which results in the standard RMC
extractor tests taking a week to
complete. AHAM stated that with two
loads, one load could be soaking while
the other load was spinning. (AHAM,
No. 14 at p. 26).
DOE supports AHAM’s suggestion to
add a requirement to maintain the
required temperature at all times
between the start and end of the soak,
which will help eliminate variability in
the extractor test results. Today’s final
rule incorporates this requirement. DOE
also supports AHAM’s suggestion that
the test loads for the extractor tests be
comprised of randomly selected cloth
from the beginning, middle and end of
a lot. This requirement will provide
more consistent results and will reduce
variability that could occur as a result
of material variations within a single
test cloth lot. DOE also concurs that
allowing two test loads would
significantly reduce the test burden
required for performing the standard
extractor RMC tests. Therefore, today’s
final rule allows the use of two test
loads for the standard extractor RMC
tests.
Based on recommendations from the
AHAM Energy Test Cloth Task Force,
DOE proposed in the September 2010
NOPR to specify that it not be necessary
to dry the test load between extraction
runs; however, the bone dry weight
would need to be checked after every 12
extraction runs to ensure the bone dry
weight is still within tolerance. In
response to the September 2010 NOPR,
AHAM noted that the first test cloth
soak after bone drying absorbs less
water. Therefore, AHAM suggested that
the test procedure require the test load
to be soaked and extracted one time
following bone drying, before
continuing with the remaining RMC
tests. This single post-bone-drying
extraction would be run at the speed
currently being tested, and would last
for four minutes. (AHAM, No. 14 at p.
27).
Based on AHAM’s comment that the
first test cloth soak after bone drying
absorbs less water, DOE agrees that the
first soak/extraction cycle after bone
drying should not be used as a data
point in the standard extractor RMC
tests. Therefore, DOE adopts AHAM’s
suggestion and requires that the test
load be soaked and extracted for one
time following bone drying before
continuing with the remaining RMC
tests.
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Clarification of the RMC Nomenclature
and Application of the RMC Correction
Curve
In the September 2010 NOPR, DOE
proposed to modify the nomenclature
used for RMC values that are
intermediates in the calculation of a
final RMC. The proposed change
clarified that the RMC values used in
section 3.8.4 of appendix J1 are the
values obtained from either section 3.8.2
or 3.8.3. AHAM supports this
modification. (AHAM, No. 14 at p. 16).
Additionally, during DOE’s ENERGY
STAR testing and verification
program 12 in April 2011, test
laboratories raised questions regarding
the application of the RMC correction
factors as described in section 2.6.7 of
the current appendix J1 test procedure.
Specifically, the test procedure does not
explicitly describe how to apply the
RMC correction factors in the RMC
equations in section 3.8. For example, if
the calculated value of RMCmax in
section 3.8.2.5 is 0.455 (or 45.5%), a
laboratory could incorrectly apply the
correction factor by applying it to the
number 45.5 rather than to the fractional
value 0.455, to which it should be
applied. In addition, for clothes washers
with both cold and warm rinse, or with
multiple spin speeds, the test procedure
does not instruct whether to apply the
RMC correction factors before or after
combining the component RMC values
in sections 3.8.3.3 or 3.8.4 of appendix
J1.
To resolve this ambiguity, DOE
clarifies the RMC nomenclature and
RMC correction calculations throughout
section 3.8 of the revised test procedure.
Specifically, DOE explicitly defines the
RMC correction equations and clarifies
the order in which the RMC corrections
should be performed for clothes washers
with both cold and warm rinse and/or
multiple spin speeds.
DOE has also discovered a
typographical error in the formula given
in section 2.6.6.1 of the test procedure.
That formula and the accompanying text
provide the means of deriving the linear
least-squares coefficients A and B,
which relate the extractor-measured
RMC values of section 2.6.5 (RMCcloth)
and the standard RMC values in Table
2.6.6.1 (RMCstandard). Currently in
appendix J1, section 2.6.6.1 includes the
formula (RMCcloth): RMCstandard ∼ A *
RMCcloth + B. However, the notation
‘‘(RMCcloth):’’ was incorrectly transcribed
from a DOE report cited in the January
2001 standards Final Rule.13 The correct
version of the formula should be
RMCstandard ∼ A * RMCcloth + B. Today’s
final rule corrects this error and clarifies
that the RMCstandard values are linearly
related to the RMCcloth values through
the coefficients A and B. This correction
and clarification apply to both appendix
J1 and appendix J2.
In addition, DOE has observed that
the description of the analysis of
variance test to be performed in section
2.6.6.2 is not explicit about several key
details of the analysis. Currently in
appendix J1, section 2.6.6.2 states,
‘‘Perform an analysis of variance test
using two factors * * *’’. Because an
analysis of variance test can be
performed in multiple ways,
clarification is needed to specify that an
analysis of variance ‘‘with replication’’
test should be performed. Additionally,
the current provisions state, ‘‘The ‘P’
value in the variance analysis shall be
greater than or equal to 0.1.’’ Because
several different P-values can be
determined, clarification is needed to
specify that the P-value in question is
‘‘the ‘P’ value of the F-statistic for
interaction between spin speed and lot
in the variance analysis.’’ Finally, the
current provisions of 2.6.6.2 state that
‘‘ ‘P’ is a theoretically based probability
of interaction based on an analysis of
variance.’’ This is technically incorrect;
while ‘‘P’’ does represent a measure of
interaction between spin speed and lot,
it does not represent the probability of
interaction between the two. DOE makes
these corrections and clarifications in
today’s final rule to both appendix J1
and appendix J2. DOE notes that these
corrections and clarifications are for
technical accuracy only, and they will
not change how these provisions of the
test procedure are conducted.
12 Details about DOE’s ENERGY STAR testing and
verification program available at https://
www1.eere.energy.gov/buildings/
appliance_standards/
energy_star_testing_verification.html.
13 The January 2001 standards Final Rule cited a
DOE report titled, ‘‘Development of a Standardized
Energy Test Cloth for Measuring Remaining
Moisture Content in a Residential Clothes Washer,’’
published in May 2000. See 66 FR 3314, 3317.
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Removal of Redundant Sections
The current test procedure contains
redundant sections regarding the test
cloth specifications and
preconditioning. DOE proposed in the
September 2010 NOPR to remove the
redundant sections, currently numbered
2.6.1.1–2.6.1.2.4. These sections were
made obsolete by the January 2001
standards Final Rule, which added
sections 2.6.3 through 2.6.7.2 into
appendix J1. However, DOE proposed to
maintain the thread count specification
from deleted section 2.6.1.1(A), of 65 ×
57 per inch (warp × fill), by moving it
to section 2.6.4.3.
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AHAM and Whirlpool support
deleting these obsolete sections and
maintaining the thread count
specification of 65 × 57 per inch (warp
× fill) by moving it to section 2.6.4.3.
(AHAM, No. 14, pp. 23–24; AHAM, No.
24 at p. 5; Whirlpool, No. 27 at p.4)
Therefore, for the reasons stated in the
September 2010 NOPR, DOE
incorporates these changes into both
appendix J1 and the new appendix J2
test procedure in today’s final rule, as
proposed in the September 2010 NOPR.
7. Testing Conditions
Water Supply Pressure
Section 2.4 of the current DOE clothes
washer test procedure provides the
water pressure test conditions, as
follows: ‘‘The static water pressure at
the hot and cold water inlet connection
of the clothes washer shall be
maintained at 35 pounds per square
inch gauge (psig) ± 2.5 psig (241.3 kPa
± 17.2 kPa) during the test. The static
water pressure for a single water inlet
connection shall be maintained at the 35
psig ±2.5 psig (241.3 kPa ± 17.2 kPa)
during the test. A water pressure gauge
shall be installed in both the hot and
cold water lines to measure water
pressure.’’
DOE notes that this description is
ambiguous as to whether the nominal 35
psig water pressure is to be set under
static (non-flow) conditions and allowed
to drop during flow due to the head
losses in the line, or whether the 35 psig
is to be maintained continuously under
all flow conditions during the test.
In the September 2010 NOPR, DOE
discussed the test results from a sample
of front- and top-loading clothes
washers that indicated that water
supply pressure can affect water
consumption during a wash cycle, and
the effect of water supply pressure on
total water use can vary depending on
the temperature settings selected. For
tests at 10, 20, and 35 psig water supply
pressure under flow conditions, water
consumption varied by 10–30 percent
among the different pressure conditions
for either hot wash/cold rinse or cold
wash/cold rinse cycles.
DOE noted that the test procedures for
other residential appliances specify the
35 psig requirement as being applicable
under flow conditions. For example,
section 2.4 of the DOE test procedure for
dishwashers (10 CFR part 430 subpart B,
appendix C) specifies to ‘‘maintain the
pressure of the water supply at 35 ± 2.5
pounds per square inch gauge (psig)
when the water is flowing.’’
Dishwashers and clothes washers would
likely have the same water supply
pressure when installed in a house, so
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the test procedures for these products
should include consistent water supply
pressure specifications. DOE noted,
however, that the test data suggested a
water supply pressure of 20 psig under
flow conditions for the most consistent
water use among different cycles for a
given clothes washer. DOE’s analysis
indicated that 20 psig may represent
typical static pressure under flow
conditions that would result from 35
psig at non-flow conditions, and that
these conditions may be more
representative of water supply
conditions that would be found in
typical residential settings.
In the September 2010 NOPR, DOE
did not propose to specify water supply
pressure more closely. DOE asked for
stakeholders to provide any relevant
information about the conditions under
which clothes washers are currently
tested, and invited comment on the
appropriate specification of the water
supply pressure. DOE received the
following information and comments
from interested parties regarding the
water supply pressure requirements in
the existing clothes washer test
procedure.
ALS and AHAM support retaining the
current specifications for static water
supply pressure. ALS and AHAM
suggested that DOE specify a ‘‘dynamic
water pressure’’ of 35 psi ± 2.5 psi.
AHAM stated that dynamic water
pressure affects the test results, and ALS
stated that dynamic water pressure is
the most important water supply
pressure. (ALS, No. 10 at p. 5; AHAM,
No. 14 at p. 16).
Springboard stated that clothes
washers with higher flow rates could
require extra-high water pressure to
regulate the pressure to 35 psi during
water fill. (Springboard, No. 11 at p. 3).
NEEA stated that water pressure
should be specified under flow
conditions (not static pressure), and the
value should be the same as for the
dishwasher test procedure (35 psi).
NEEA presented data from research
conducted by the American Water
Works Association (AWWA) that
indicates a range of average water
system static pressures from 45 psi to 80
psi, with occasional outliers. According
to NEEA, discussions with rural water
systems contractors suggest normal
system pressure setpoints of 25 and 55
psi for pump on and pump off,
respectively. NEEA further stated that
studies of municipal water system
pressures tend to find a static pressure
range of 45 to 100 psi, depending on
where in the system one measures.
NEEA stated that because municipal
water system pressures are designed to
maintain pressure under high flow rates
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at fire hydrants and standpipes,
communities are unlikely to have
flowing pressure conditions less than 35
psi. Therefore, NEEA believes that 35
psi is a reasonable estimate for most
residential households. (NEEA, No. 12
at pp. 14–15; NEEA, Public Meeting
Transcript, No. 20 at pp. 203–204)
Whirlpool commented that it supports
35 psi ± 2.5 psi under ‘‘dynamic flow
conditions.’’ (Whirlpool, No. 13 at
p. 14).
The Joint Commenters commented
that a static pressure under non-flow
conditions of 35 psi is significantly
lower than actual system operating
pressures. They stated that a test rig
calibrated to maintain a static pressure
of 35 psi will yield a flowing water
pressure that is significantly less than
35 psi. The Joint Commenters also noted
that the California-American Water
Company reports one small sub-district
with an operating pressure of 40 psi,
while all other service areas have
average operating pressures of 60 to 80
psi. They also observed that the
Philadelphia Water Department
reported an average operating pressure
of 55 psi during fiscal year 2008. The
Joint Commenters believe that a water
supply test pressure of 35 psi under
flow conditions would better represent
typical water supply pressures found in
homes, and would align the clothes
washer test procedure with the
dishwasher test procedure. The Joint
Commenters further commented that
DOE’s proposed definition of water
pressure contains both ‘‘static’’ and
‘‘flowing’’ in the same sentence. NRDC
suggested that the word ‘‘static’’ be
removed from the definition to remove
ambiguity and a potentially significant
source of unintended variation in test
results. (Joint Commenters, No. 16 at pp.
8–9; Joint Commenters, No. 23 at pp. 5–
6).
The California Utilities recommend
that DOE clarify whether the water
supply pressure specified in the
proposed test procedure should be
maintained at flow or non-flow
conditions. The California Utilities also
recommend that DOE specify that the
water supply pressure be maintained at
35 psig when the water is flowing,
which will maintain consistency with
the dishwasher test procedure. The
California Utilities stated that this
would be an appropriate water pressure
for much of the residential sector across
the country. (California Utilities, No. 18
at p. 5).
DOE notes that nearly all interested
parties recommended specifying a water
pressure of 35 psi during water flow
conditions. DOE further notes that the
clothes washer water consumption will
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be most heavily affected by the water
pressure during flow conditions rather
than the water pressure during non-flow
conditions. Therefore, DOE agrees that
the water pressure specification should
be specified during flow conditions.
DOE recognizes that the term
‘‘pressure’’ must be further qualified to
remove ambiguity regarding the water
supply conditions. In referring to the
pressure in fluid systems, ‘‘static’’ does
not imply that the fluid is stationary;
rather, the term ‘‘static’’ represents the
pressure exerted in all directions by the
fluid. Static pressure is the type of
pressure most commonly measured by
typical instrumentation. When the water
is stationary, the static pressure is
highest and represents the total pressure
in the system. As the water begins
flowing, some of the static pressure is
converted to ‘‘dynamic pressure,’’
which is the kinetic energy of the fluid
per unit volume. Thus, during flow
conditions, the static pressure decreases
at the same time that dynamic pressure
increases.
Because the intent of the test
procedure is to specify the typically
measured pressure of the water during
flow conditions, DOE believes that the
definition it proposed in the September
2010 NOPR correctly specifies
measuring the static water pressure
while the water is flowing. Removing
the term ‘‘static water pressure’’ could
create ambiguity about which type of
water pressure should be measured (i.e.,
static pressure, dynamic pressure, or
total pressure). Similarly, replacing the
term ‘‘static water pressure’’ with
‘‘dynamic water pressure’’ could result
in an incorrect measurement being
performed, since ‘‘dynamic water
pressure’’ has a different, specific
meaning in the context of fluid flow and
is not equivalent to the pressure
typically measured during flow
conditions. For these reasons, today’s
final rule incorporates the change to the
water pressure specification in the new
appendix J2 test procedure as proposed
in the September 2010 NOPR.
Water Inlet and Drain Hoses
In response to the September 2010
NOPR, Whirlpool commented that
appendix J2 should adopt three
additional test setup requirements that
can affect water and energy
consumption. First, Whirlpool
suggested that the length of the inlet
water hoses be defined as the standard
hose length of 48 inches, as this would
avoid an inadvertent impact on hot
water usage. Second, Whirlpool
suggested that the length of the drain
hose should be defined as not to exceed
72 inches. Third, Whirlpool suggested
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that the drain pipe height should be
between 38 and 54 inches. Whirlpool
stated that adoption of these
specifications will significantly reduce
variation between laboratories.
(Whirlpool, No. 13 at p. 14).
DOE notes that Section 2.1 of the test
procedure requires the clothes washer to
be installed in accordance with
manufacturer’s instructions, which
would include installation of the water
inlet and drain hoses supplied with
each new clothes washer. Therefore,
DOE believes the test procedure should
not separately specify the length of the
inlet and drain hoses. Regarding the
height of the drain pipe, DOE has no
data with which to evaluate Whirlpool’s
suggested height requirement.
Therefore, DOE is unable to determine
the impact on test results due to the
height of the drain pipe. For these
reasons, today’s final rule does not
adopt Whirlpool’s suggested
requirements regarding water inlet and
drain hoses.
8. Clarifications and Corrections
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Correction of Cold Rinse Definition
After the publication of the September
2010 NOPR, DOE became aware of an
error in the definition of ‘‘cold rinse’’ in
the test procedure at appendix J1.
Specifically, cold rinse is defined in
section 1.22 of appendix J1 as ‘‘the
coldest rinse temperature available on
the machine (and should be the same
rinse temperature selection tested in 3.7
of this appendix).’’ However, section 3.7
of appendix J1 contains provisions for
testing warm rinse, which instruct that
such tests be conducted with the hottest
rinse temperature available. Thus,
section 3.7 is inapplicable to the
definition of cold rinse in section 1.22.
In the August 2011 SNOPR, DOE
proposed to remove reference to section
3.7 in the definition of cold rinse in
both section 1.22 of appendix J1 and
proposed section 1.7 of appendix J2.
Whirlpool and AHAM agree with
DOE’s proposal to correct the definition
of cold rinse. (Whirlpool, No. 27 at p.
4; AHAM, No. 24 at p. 3) DOE received
no comments on these revisions.
Therefore, for the reasons stated above
and in the August 2011 SNOPR, DOE
incorporates these changes into the
amendments to the appendix J1 test
procedure and the new appendix J2 test
procedure in today’s final rule as
proposed in the August 2011 SNOPR.
Clarification of Wash Time Setting for
Electromechanical Dials
Section 2.10 of the current test
procedure specifies the wash time
setting to be used in the energy test
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cycle. If only one wash time is
prescribed in the energy test cycle, that
wash setting is to be used; otherwise,
the wash time setting is required to be
the higher of either the minimum wash
time or 70 percent of the maximum
wash time available in the energy test
cycle. As described in the August 2011
SNOPR, DOE has become aware that, for
certain clothes washers equipped with
an electromechanical dial to control
wash time, the dial may yield different
results for the same setting depending
on the direction in which the dial was
turned to reach that setting. DOE’s
internal testing indicates that that
consistency in setting the wash time in
such cases may be achieved by resetting
the dial to the minimum wash time and
then turning it in the direction of
increasing wash time to reach the
desired setting. If the desired setting is
passed, the dial should not be turned in
the direction of decreasing wash time to
reach the setting. Instead, the dial
should be returned to the minimum
wash time and then turned in the
direction of increasing wash time until
the desired setting is reached. In the
August 2011 SNOPR, DOE proposed to
add these clarifications to the provisions
for setting the wash time in both
appendix J1 and appendix J2.
To provide further consistency, DOE
also proposed the additional
clarification that the conditions stated
in the case of more than one wash time
setting—that the wash time setting shall
be the higher of either the minimum, or
70 percent of the maximum wash time
available in the energy test cycle—shall
apply regardless of the labeling of
suggested dial locations.
Springboard stated that use and care
manuals sometimes do not prescribe a
wash time for each cycle. Springboard
also commented that currently the
appendix J1 test procedure does not
specify whether the 70 percent wash
time provision applies to machines with
electromechanical or electronic
controls. Springboard questioned
whether a default setting on the
machine should be used, or whether the
cycle and time labeled in bold on the
control panel should be the prescribed
setting. Springboard further noted that
on a mechanical dial, it is not always
possible to achieve the same wash time
setting. (Springboard, No. 11 at p. 3).
AHAM does not oppose DOE’s
proposed clarifications to appendices J1
and J2 regarding the wash time setting.
(AHAM, No. 24 at p. 4) ALS supports
DOE’s proposal to achieve consistency
in obtaining the wash time setting on
machines with electromechanical dials.
ALS stated that the proposed changes
would reduce variability in test results.
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Furthermore, ALS supports the proposal
to add the phrase ‘‘regardless of the
labeling of suggested dial locations’’ to
clarify the existing requirement that
‘‘the wash time setting shall be the
higher of either the minimum or 70
percent of the maximum wash time
available in the energy test cycle.’’ (ALS,
No. 22 at p. 3).
DOE has observed that clothes
washers with electronic controls have a
default wash time setting for each cycle;
this default time would be considered
the ‘‘prescribed’’ wash time setting.
Therefore, the provision stating ‘‘the
wash time setting shall be the higher of
either the minimum or 70 percent of the
maximum wash time available in the
energy test cycle’’ applies only to
electromechanical controls, where the
user is required to manually set the
wash time by turning the wash setting
dial. DOE’s proposal would clarify that
this wash time requirement would
apply ‘‘regardless of the labeling of
suggested dial locations.’’ This would
include any labels in bold or other
markings suggesting particular locations
on the dial.
DOE received no comments objecting
to its proposed revisions regarding the
wash time setting provisions of the test
procedure. Therefore, for the reasons
discussed above, DOE incorporates
these changes into the amendments to
the appendix J1 test procedure and the
new J2 test procedure in today’s final
rule.
Clarification of Cold Wash Definition
As described in the August 2011
SNOPR, DOE has observed multiple
clothes washer models that offer a ‘‘tap
cold’’ wash temperature setting in
addition to a ‘‘cold’’ wash temperature
setting. DOE proposed to clarify how to
classify these temperature selections in
appendix J1 and appendix J2.
Section 3.6 of appendix J1 defines the
cold wash selection as ‘‘the coldest
wash temperature selection available.’’
Additionally, section 1.18 of appendix
J1 defines ‘‘warm wash’’ as ‘‘all wash
temperature selections below the hottest
hot, less than 135 °F, and above the
coldest cold temperature selection.’’ In
some cases with these models, DOE has
observed that the ‘‘cold’’ setting mixes
in hot water to raise the temperature
above the cold water supply
temperature, as defined in section 2.3 of
appendix J1. In such cases, DOE
proposes that the manufacturer
specified ‘‘cold’’ setting should be
considered a warm wash, as defined in
section 1.18 of appendix J1 and section
1.34 of appendix J2; and that the ‘‘tap
cold’’ setting should be considered the
cold wash, as defined in section 3.6 of
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both appendix J1 and appendix J2. In
cases where the ‘‘cold’’ setting does not
add any hot water for any of the test
loads required for the energy test cycle,
the ‘‘cold’’ setting should be considered
the cold wash; and the ‘‘tap cold’’
setting would not be required for
testing.
AHAM, Whirlpool, and NEEA
support the proposed clarification
regarding cold wash temperature
selection (AHAM, No. 24 at p. 4;
Whirlpool, No. 27 at p. 3; NEEA, No. 26
at p. 7). DOE received no comments
objecting to its proposed revisions
regarding the clarification of the cold
wash temperature. Therefore, for the
reasons discussed above, DOE
incorporates these changes into the
amendments to the appendix J1 test
procedure and the new J2 test procedure
in today’s final rule.
Removal of Obsolete Note in Water
Factor Calculation Section
In the current test procedure at
appendix J1, section 4.2 provides
instructions for calculating the water
consumption of clothes washers.
Currently, this section includes the
following note:
(The calculations in this Section need not be
performed to determine compliance with the
energy conservation standards for clothes
washers).
EPCA established a water factor
standard for top-loading and frontloading standard-size residential clothes
washers, so this note is now obsolete.
The calculations in section 4.2 must be
performed to determine compliance
with energy conservation standards for
these product classes. Today’s final rule
removes this note in both appendix J1
and appendix J2.
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Correction of Typographical Error in
Hot Water Consumption Calculation
Section 4.1.4 of the existing clothes
washer test procedure calculates the
total per-cycle hot water energy
consumption using gas-heated or oilheated water. The equation listed in this
section contains a clerical error in the
symbol for total weighted per-cycle hot
water energy consumption. In the
September 2010 NOPR, DOE proposed
amending the equation in this section to
replace the incorrect symbol, HT, with
the correct symbol, HET. DOE would
apply this amendment to both existing
appendix J1 and new appendix J2.
AHAM supports DOE’s proposed
correction to the symbol for total
weighted per-cycle hot water energy
consumption. (AHAM, No. 14 at p. 16)
DOE received no comments objecting to
this revision. Therefore, for the reasons
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stated above, DOE incorporates these
changes into the amendments to the
appendix J1 test procedure and the new
J2 test procedure.
Removal of Energy Factor Calculation
Section 4.5 of the current clothes
washer test procedure provides for the
calculation of Energy Factor (EF). EF
was the energy efficiency metric used to
establish energy conservation standards
for clothes washers manufactured before
January 1, 2004. (10 CFR 430.32(g)) This
metric is no longer used to determine
compliance with energy conservation
standards, or in any other related
metrics. Therefore, DOE proposed in the
September 2010 NOPR to remove the
obsolete calculation of EF from the
clothes washer test procedure.
AHAM supports DOE’s proposal to
remove the obsolete calculation of EF
from the clothes washer test procedure.
(AHAM, No. 14 at p. 17) DOE received
no comments objecting to this revision.
Therefore, for the reasons stated above,
DOE incorporates this change into the
amendments to the appendix J1 test
procedure and the new appendix J2 test
procedure.
Clarification of Waiver Field Test
Equation
In response to the August 2011
SNOPR, AHAM commented that section
6.2 of the test procedure regarding field
testing needs clarification. AHAM stated
further that the equation in section 6.2
is confusing. (AHAM, No. 24 at p. 6)
Section 6.2 in the appendix J1 test
procedure provides describes one
possible method for determining the
energy consumption of a clothes washer
with a nonconventional wash system.
Generally, the method described in this
section involves field testing both the
nonconventional clothes washer as well
as a conventional clothes washer;
developing a scaling factor by
comparing the conventional clothes
washer’s rated energy consumption and
field test energy consumption; and
applying this scaling factor to the
nonconventional clothes washer to
determine an appropriate rating based
on its field test results.
The equation provided in Section 6.2
was created when EF was the only
metric used to determine compliance
with energy conservation standards for
clothes washers. Therefore, it does not
include provisions for measuring the
energy required for moisture removal
(i.e., drying energy), which is a
component of MEF, or for measuring the
water consumption factor. Therefore,
this equation is no longer applicable
and should be removed. Today’s final
rule amends Section 6.2 in both
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appendix J1 and the newly created
appendix J2 by removing the specific
example, including the equation, and
modifying the general provisions so that
the section is applicable to MEF and
WF. The amendment to appendix J2
contains an additional instruction to
measure standby and off mode power
according to the provisions in the
relevant sections of the test procedure.
Clarification of Water Factor
Terminology
DOE notes the use of inconsistent
terminology to describe the water
consumption factor (or water factor)
among the clothes washer test
procedure, clothes washer energy
conservation standards, annual
operating cost calculations, and
certification, compliance, and
enforcement requirements for clothes
washers.
The clothes washer energy
conservation standards use the
terminology ‘‘water factor,’’ and DOE
has observed that the term ‘‘water
factor’’ has been used more often than
‘‘water consumption factor’’ during
previous rulemakings and within public
comments submitted by interested
parties. DOE has also observed that
‘‘water factor’’ is the term most
commonly used within the clothes
washer industry. Therefore, today’s final
rule replaces the term ‘‘water
consumption factor’’ with ‘‘water
factor’’ in the appendix J1 test
procedure, the newly created appendix
J2 test procedure, and the annual
operating cost calculations for clothes
washers in 10 CFR 430.23(j). In
addition, today’s final rule replaces the
abbreviation ‘‘WCF’’ with ‘‘WF’’ in the
appendix J1 test procedure and the
newly created appendix J2 test
procedure.
9. Test Procedure Performance
Specifications
In response to the August 2009
standards framework document, DOE
received multiple comments in support
of adding performance measures to the
clothes washer test procedure, which it
addressed in the September 2010 NOPR.
DOE carefully considered these
comments but did not propose to
incorporate measures of wash
performance into the clothes washer test
procedure. DOE noted that EPCA states
‘‘[a]ny test procedures prescribed or
amended under this section shall be
reasonably designed to produce test
results which measure energy
efficiency, energy use * * * or
estimated annual operating cost of a
covered product during a representative
average use cycle or period of use * * *
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and shall not be unduly burdensome to
conduct.’’ 42 U.S.C. 6293(b)(3). DOE
stated, however, that it would consider
wash performance and related impacts
to consumer utility in developing any
future energy conservation standards for
residential clothes washers.
In response to the September 2010
NOPR, DOE received multiple
comments regarding the inclusion of
performance measures in the clothes
washer test procedure. AHAM and
NEEA support DOE’s proposal to not
incorporate wash performance into the
test procedure. AHAM stated that DOE
should consider it later should data on
the feasibility of incorporating a
measure of wash performance become
available. NEEA commented that there
is no justification for including such
metrics in a test procedure, which is
required by EPCA to measure energy
and water use and to provide a means
to estimate annual operating cost.
(AHAM, No. 14 at p. 17; NEEA, No. 12
at p. 15) ALS stated that generally, the
residential clothes washer test
procedure is adequate for measuring
energy consumption and water
consumption of both residential and
commercial clothes washers, as long as
the minimum efficiency standard for
commercial clothes washers takes into
account the consumer utility needed for
the commercial washer application.
(ALS, No. 10 at p. 6).
BSH commented that wash
performance should be included, and
that the clothes washer should be rated
based on the quantity of laundry can
successfully be washed rather than the
physical size of the clothes container.
(BSH, No. 17 at p. 4; BSH, Public
Meeting Transcript, No. 20 at p. 211)
BSH stated that manufacturer-rated load
weight accompanied by performance
assessments are the only way to fairly
compare top-load and front-load clothes
washer capabilities. (BSH, No. 17 at p.
4).
China commented that the testing
conditions proposed by DOE for various
temperature settings are different than
the test conditions required by IEC
Standard 60456, ‘‘Clothes washing
machines for household use–Methods
for measuring the performance,’’ Edition
5.0. China recommended that DOE
apply the same test conditions as IEC
Standard 60456, or specify testing
temperatures by referencing IEC
Standard 60456 test conditions, to avoid
creating unnecessary barriers to trade.
China stated that IEC Standard 60456
test conditions establish a clear value
for the supply water temperatures,
compared to the range of water
temperatures provided in DOE’s
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proposed rule, and that this could lead
to confusion. (China, No. 19 at p.4).
In response, DOE reiterates that it
currently considers any lessening of the
utility or the performance of a covered
product likely to result from the
imposition of any energy conservation
standard. 42 U.S.C. 6295(o)(2)(B)(i)(IV)
Furthermore, DOE may not prescribe a
standard that is likely to result in the
unavailability in the United States of
performance characteristics, including
reliability. 42 U.S.C. 6295(o)(4) As
stated above, EPCA requires that DOE
test procedures must be reasonably
designed to produce test results that
measure energy efficiency, energy use,
water use in specified instances, or
estimated annual operating cost of a
covered product during a representative
use cycle or period of use. 42 U.S.C.
6293(b)(3).
D. Annual Operating Cost Calculation
DOE did not propose in the
September 2010 NOPR to amend the
estimated annual operating cost
calculation in 10 CFR 430.23 to include
the cost of energy consumed in the nonactive washing modes. DOE noted that
the cost of energy consumed in selfclean, standby, off, delay start, and cycle
finished modes is small relative to the
total annual energy cost for clothes
washers and, therefore, would make
little difference in the estimated annual
operating cost calculation. In addition,
the Federal Trade Commission’s (FTC’s)
EnergyGuide Label for clothes washers
includes as its primary indicator of
product energy efficiency the estimated
annual operating cost, compared to a
range of annual operating costs of
similar products. Appendix F1 to 16
CFR part 305. An estimated annual
operating cost incorporating self-clean,
standby, off, delay start, and cycle
finished mode energy use would no
longer be directly comparable to the
minimum and maximum energy costs
currently prescribed for the
EnergyGuide Label.
Upon further consideration, DOE
proposed in the August 2011 SNOPR to
amend the annual energy cost
calculations to include the cost of
energy consumed in non-active washing
modes. As discussed in the August 2011
SNOPR, EPCA requires that 180 days
after the amended test procedure is
prescribed, all representations related to
the energy use, efficiency, or cost of
energy consumed for residential clothes
washers must reflect the results of
testing according to the amended test
procedure. 42 U.S.C. 6293(c)(2) Also,
the definition of ‘‘estimated annual
operating cost’’ is the aggregate retail
cost of the energy likely to be consumed
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annually in representative use of a
consumer product, determined in
accordance with section 6293 of this
title. 42 U.S.C. 6291(7) The test
procedure established in today’s final
rule includes provisions for measuring
standby and off mode energy use.
Additionally, EPCA requires that any
revisions to the labels for residential
clothes washers include disclosure of
the estimated annual operation cost
(determined in accordance with DOE’s
test procedures prescribed under section
6293 of EPCA), unless the Secretary
determines that disclosure of annual
operating cost is not technologically
feasible, or if the FTC determines that
such disclosure is not likely to assist
consumers in making purchasing
decisions or is not economically
feasible. 42 U.S.C. 6294(c)(1).
DOE received additional comments
from interested parties in response to its
proposal in the August 2011 SNOPR.
AHAM opposes revision of estimated
annual operating cost to incorporate
standby, off and self-clean modes.
AHAM stated that the cost of energy
associated with each individual mode
makes little difference in the annual
operating cost. AHAM claims the
increased test burden in measuring
these modes and incorporating them in
the annual energy cost is not justifiable.
AHAM further stated that if, however,
DOE revises the estimated annual
operating cost calculation, DOE and
FTC should provide adequate time for
collection of data on operating costs
before the new integrated approach goes
into effect. (AHAM, No. 24 at p. 3)
NEEA agrees with DOE’s proposal to
include non-active washing mode
energy use in the calculation of energy
cost. (NEEA, No. 26 at p. 7).
DOE notes that the revised test
procedure at appendix J2 implements
the ‘‘alternate approach’’ for measuring
standby and off mode energy use, which
minimizes the additional test burden
required for performing these
measurements. In addition, the revised
test procedure does not require
measurement of self-clean mode.
For the reasons stated in the August
2011 SNOPR, DOE amends the annual
energy cost calculations in 10 CFR part
430.23 for residential clothes washers to
include the cost of energy consumed in
standby and off modes. Therefore,
today’s final rule amends the clothes
washer test procedure to revise the
estimated annual operating cost
calculation to integrate standby and off
mode energy use, as proposed in the
August 2011 SNOPR.
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E. Revisions to Appendix J1
4. Removal of Redundant Sections
The following sections describe
amendments to the current appendix J1
in today’s final rule. These changes are
discussed in more detail previously but
are set forth here to clearly describe
those changes that are applicable to
appendix J1, use of which is currently
required to demonstrate compliance
with existing energy conservation
standards. In any rulemaking to amend
a test procedure, DOE must determine to
what extent, if any, the proposed test
procedure would alter the measured
energy efficiency of any covered
product as determined under the
existing test procedure. 42 U.S.C.
6293(e)(1) If DOE determines that the
amended test procedure would alter the
measured efficiency of a covered
product, DOE must amend the
applicable energy conservation standard
accordingly. 42 U.S.C. 6293(e)(2) DOE
has determined that none of the
following amendments to appendix J1
would alter the measured efficiency of
residential clothes washers. The
amendments to appendix J1 are effective
30 days after publication of this final
rule in the Federal Register.
As discussed previously in section
III.C.6.k, this final rule removes the
redundant sections 2.6.1.1–2.6.1.2.4 in
appendix J1, which were made obsolete
by the 2001 Final Rule. Today’s final
rule also maintains the thread count
specification from deleted section
2.6.1.1(A), of 65 x 57 per inch (warp x
fill) by moving it to section 2.6.4.3.
1. Revision of Introductory Text
Today’s final rule revises the
introductory text of appendix J1 after
the appendix heading to note that
manufacturers may continue to use
appendix J1 until the compliance date
of any amended standards that address
standby and off mode energy
consumption for residential clothes
washers. After this date, all residential
clothes washers shall be tested using the
provisions of appendix J2. This
introductory note is also included at the
beginning of appendix J2.
2. Correction of Typographical Errors in
Materials Incorporated by Reference
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The current DOE test procedure at
appendix J1 contains an incorrect
mailing address in section 2.6.4.5.3(b)
for the American Association of Textile
Chemists and Colorists. The correct
address is P.O. Box 12215. Today’s final
rule corrects this typographical error.
Today’s final rule also updates the
contact telephone number to (919) 549–
3526, which is listed on the cover page
of the current versions of the AATCC
standards.
3. Correction of Cold Rinse Definition
As discussed previously in section
III.C.8.a, today’s final rule corrects the
definition of cold rinse in section 1.22
of appendix J1 by removing the
incorrect reference to section 3.7.
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5. Detergent Specification and Dosage
As discussed previously in section
III.C.6.c, this final rule specifies the use
of AHAM standard test detergent
Formula 3 in test cloth preconditioning,
at a dosing of 27.0g + 4.0g/lb.
6. Wash Time Setting for
Electromechanical Dials
As discussed previously in section
III.C.8.b, this final rule adds clarification
to the wash time setting provisions in
section 2.10 of appendix J1 to help
ensure consistency when setting the
wash time on clothes washers with
electromechanical dials.
7. Clarification of Cold Wash Definition
As discussed previously in section
III.C.8.c, this final rule adds clarification
to the cold wash definition in section
3.6 of appendix J1 for clothes washers
that offer a ‘‘tap cold’’ wash temperature
setting in addition to a ‘‘cold’’ wash
temperature setting.
8. Removal of Obsolete Note in Water
Factor Calculation Section
As discussed previously in section
III.C.8.d, this final rule removes an
obsolete note in section 4.2 of appendix
J1, which states that the water factor
calculations need not be performed to
determine compliance with the energy
conservation standards for clothes
washers.
9. Clarification of Water Factor
Terminology
As discussed previously in section
III.C.8.h, this final rule replaces the term
‘‘water consumption factor’’ with ‘‘water
factor’’ in sections 1.19 and 4.2.3 of
appendix J1.
clothes washers with capacities up to
6.0 cubic feet.
12. Clarification of Waiver Field Test
Equation
As discussed previously in section
III.C.8.g, this final rule modifies the
provisions in section 6.2 in appendix J1
by removing the specific example,
including the equation, and modifying
the general provisions so that the
section is applicable to MEF and WF.
13. Corrections to Provisions for
Calculating the RMC Correction Curve
As discussed previously in section
III.C.6.j, this final rule corrects
typographical and transcription errors
in the formula given in section 2.6.6.1
of appendix J1. This final rule also
amends the description of the analysis
of variance test to be performed in
section 2.6.6.2 to make the analysis
details more explicit and technically
accurate.
F. Removal of Obsolete Test Procedure
at Appendix J
In the September 2010 NOPR, DOE
proposed to delete appendix J to subpart
B of 10 CFR part 430 along with all
references to appendix J in 10 CFR
430.23. Appendix J applies only to
clothes washers manufactured before
January 1, 2004 and is therefore
obsolete. Appendix J1 to subpart B of 10
CFR part 430 provides an applicable test
procedure for all clothes washers
currently available on the market. DOE
proposed to maintain the current
naming of appendix J1, rather than
renaming it as appendix J, and to
establish new appendix J2 to simplify
the changes required.
NEEA supports DOE’s proposal to
eliminate appendix J and to add
appendix J2. (NEEA, No. 12 at p. 16)
Therefore, for the reasons discussed
above, DOE eliminates appendix J along
with all references to appendix J.
G. Compliance With Other EPCA
Requirements
1. Test Burden
As noted previously, under 42 U.S.C.
6293(b)(3), EPCA requires that ‘‘[a]ny
test procedures prescribed or amended
10. Correction of Typographical Error in under this section shall be reasonably
Hot Water Consumption Calculation
designed to produce test results which
measure energy efficiency, energy use
As discussed previously in section
* * * or estimated annual operating
III.C.8.e, this final rule amends the
equation in section 4.1.4 of appendix J1 cost of a covered product during a
to replace the incorrect symbol, HT, with representative average use cycle or
period of use * * * and shall not be
the correct symbol, HET.
unduly burdensome to conduct.’’ DOE
11. Extension of Test Load Size Table
tentatively concluded in the September
2010 NOPR that amending the relevant
As discussed previously in section
DOE test procedures to incorporate
III.C.3.b, this final rule extends Table
clauses regarding test conditions and
5.1 in appendix J1 to accommodate
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methods found in IEC Standard 62301,
along with the proposed modifications
to the active washing mode test
procedure, would satisfy this
requirement.
DOE received numerous comments
regarding test burden in response to the
September 2010 NOPR. DOE addressed
some of these comments specifically
related to delay start mode and cycle
finished mode test burden in the August
2011 SNOPR. DOE responds to the
remaining comments here.
Whirlpool stated that the proposed
measurement of energy and water
consumption in delay start, cycle
finished, self-clean, off modes,
additional rinses, etc. would increase
manufacturer test burden by as much as
25 percent. Whirlpool commented that
it does not have sufficient ‘‘slack’’
capacity to manage such an increase in
test burden because its laboratories are
currently operating at full capacity on
two shifts. Whirlpool stated that the cost
of utilizing third-party laboratories for
this added testing would be substantial
and could exceed $500,000 annually.
Whirlpool added that the proposed
revision of the energy test cycle
definition could double or quadruple
the length of the test process for any
clothes washer for which Part (B) of the
proposed energy test cycle definition
applies. Whirlpool believes that this
additional test burden would not be
justifiable. (Whirlpool, No. 13 at pp. 1,
13).
AHAM commented that additional
measurements required by the proposed
rule would be burdensome and would
result in only a de minimus amount of
additional measured energy (as little as
zero additional energy in the case of
cycle finished mode). AHAM stated that
DOE should not substantially increase
the testing burden on manufacturers
when the result would not produce
significant conservation of energy and
thus little or no benefit to the public
interest. (AHAM, No. 14 at p. 2) AHAM
stated that measuring de minimus
amount of standby power energy would
require large amounts of testing time.
AHAM believes that DOE’s estimate of
an 11 percent increase in the testing
duration for clothes washers offering
inactive, off, delay start, and cycle
finished modes would be significant,
and AHAM predicts that the increase in
test duration could actually be as much
as 25 percent. AHAM believes that
separately measuring delay start and
cycle finished mode represents a
significant increase in the testing
burden, without any corresponding
public benefit. (AHAM, No. 14 at pp. 4,
15) Furthermore, AHAM stated that
adding steam cycles to the test
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procedure would add substantially to
the test burden. (AHAM, No. 14 at
p. 10).
BSH commented that its calculations
indicate appendix J1 requires three days
of dedicated testing for each appliance.
BSH believes this is already a significant
burden for appliance testing,
particularly as compared to clothes
dryers and other appliances. BSH
estimated that the worst-case proposal
in the September 2010 NOPR would
represent a 47 percent increase in
testing time for each clothes washer, for
a total testing time of one full work
week. BSH stated that to perform this
additional testing, laboratory facilities
and available labor would need to be
increased by around 50 percent, or
external resources sought, which would
delay product innovation. BSH also
estimated that should self-cleaning and
steam cycles be excluded from testing,
and should delay start and cycle
finished modes be included in off and
inactive modes rather than separately
measured, the increase in test burden
would be approximately 15 percent.
BSH believes that this level of testing
increase is manageable. Finally, BSH
estimated that should the definition of
energy test cycle be implemented as
proposed in the September 2010 NOPR,
test burden could increase by 100
percent or more depending on how the
phrase ‘‘largely comparable’’ is
interpreted and defined. (BSH, No. 17
pp. 5–6).
NEEA believes that any increased test
burden resulting from DOE’s proposal
will be minor in comparison to the
significant amount of testing that
manufacturers conduct as part of
product development, and in testing
their competitors’ products. NEEA
stated that much of the added test
burden, such as burden associated with
testing inactive mode, non-active wash
mode power consumption, and steam
cycles will be associated with only a
subset of the models produced. (NEEA,
No. 12 at p. 15).
The California Utilities commented
that the test procedure proposed by DOE
in the September 2010 NOPR represents
an improvement over the current J1 test
procedure, and does not appear to
significantly add to the testing burden.
The California Utilities stated that
testing of delay start, cycle finished, and
self-clean modes should apply only to
those models that include those features
(or in the case of self-clean mode, those
models with a manufacturer
recommendation for periodic self-clean
cycles), and therefore would alter the
testing burden only for those products.
The California Utilities also stated that
because measurement of hot water is
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already incorporated in the test
procedure for the MEF calculation,
inclusion of hot water in the proposed
IWF calculation will not introduce any
significant test burden. (California
Utilities, No. 18 at pp. 1, 2, 5).
In the August 2011 SNOPR, DOE
proposed supplemental amendments to
the clothes washer test procedure,
which incorporated the most current
version of IEC Standard 62301 (Second
Edition) instead of the previous version.
DOE also proposed certain amendments
to the active mode provisions of the test
procedure. As explained in the August
2011 SNOPR, DOE tentatively
concluded that the new provisions in
IEC Standard 62301 (Second Edition)
would improve test results without
undue test burden. DOE also stated its
belief that the potential for increased
test burden for certain power
measurements is offset by more
reasonable requirements for testing
equipment, while maintaining
acceptable measurement accuracy. In
addition, the proposed amendments to
the active mode provisions consist of
clarifications and would not require any
additional investment, equipment
purchases, or test time beyond those
described in the September 2010 NOPR.
Therefore, DOE tentatively concluded
that the proposed active mode
amendments would not impose
significant burden on manufacturers.
The California Utilities support the
harmonization of the test procedure
with IEC Standard 62301 (Second
Edition). The California Utilities stated
that the potential test burden on
manufacturers is outweighed by the
improvement in accuracy and
representativeness of the resulting
power measurement. The California
Utilities stated further that the increased
testing time and the use of analytical
software associated with using the
Second Edition is required only for
unstable and non-cyclical power
measurements, and because the
expected number of instances of
unstable and non-cyclical power should
be small, the added test burden should
likewise remain minimal. (California
Utilities, No. 25 at p. 1).
NEEA believes that the extra time
required for measuring unstable power
modes is justified for obtaining an
accurate measurement. NEEA believes
that for clothes washers requiring the
most extreme increase in test burden,
manufacturers will quickly learn the
behavior of their products’ standby and
off mode behavior and choose the
appropriate measurement technique
accordingly. (NEEA, No. 26 at p. 2)
NEEA also suggested that setting time
limits on the duration of delay start and
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cycle finished mode can limit the test
burden associated with measuring
power in these modes. (NEEA, No. 26 at
pp. 2–3) NEEA disagrees with
Whirlpool’s claim that there is virtually
no consumer benefit in measuring
power consumption in low-power
modes. (NEEA, No. 26 at p. 3).
DOE notes that interested parties
generally support harmonizing the test
procedure with the Second Edition of
IEC Standard 62301, and that the test
procedure improves accuracy and
consistency of test results and is not
unduly burdensome to conduct. As
described previously, DOE adopts the
‘‘alternate approach’’ in which all lowpower mode hours are allocated to the
inactive and off modes, and the lowpower mode power is only measured in
the inactive and off modes, depending
on which of these modes is present.
Under the alternate approach,
additional measurements of delay start
mode and cycle finished mode are not
required. Today’s final rule also does
not require the separate measurement of
self-clean mode. In addition, the large
majority of amendments to the active
mode provisions of the test procedure
consist of clarifications to test conduct
and revised calculations, and would not
require any additional investment,
equipment purchases, or test time
beyond those described in the
September 2010 NOPR. DOE believes
that any additional test burden resulting
from the revised definition of the energy
test cycle will be minimal because
manufacturers already possess in-depth
knowledge about the energy
characteristics of each wash cycle
offered on their clothes washers. Other
test laboratories would not be required
to conduct multiple tests to determine
which cycle settings should be included
under Part (B) of the energy test cycle,
which could actually reduce test
burden. For these reasons, DOE
concludes that today’s amendments to
the provisions for standby mode, off
mode, and active mode provisions of the
clothes washer test procedure will not
impose significant additional test
burden on manufacturers.
2. Integration of Standby Mode and Off
Mode Energy Consumption Into the
Energy Efficiency Metrics
As discussed previously, EPCA
requires that standby mode and off
mode energy consumption be integrated
into the overall energy efficiency,
energy consumption, or other energy
descriptor for each covered product
unless the current test procedures
already fully account for the standby
mode and off mode energy consumption
or if an integrated test procedure is
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technically infeasible. 42 U.S.C.
6295(gg)(2)(A) As described in section
III.B.8, DOE adds provisions in this final
rule for calculating the integrated
modified energy factor, which integrates
the combined low-power mode energy
consumption into the overall energy
efficiency metric for clothes washers.
EPCA also provides that test
procedure amendments adopted to
comply with the new EPCA
requirements for standby and off mode
energy consumption will not be used to
determine compliance with previously
established standards. 42 U.S.C.
6295(gg)(2)(C) Because DOE is
incorporating these changes in a new
appendix J2 to 10 CFR part 430 subpart
B that manufacturers would not be
required to use until the compliance
date of amended energy conservation
standards for residential clothes
washers, the test procedure
amendments pertaining to standby
mode and off mode energy consumption
that DOE adopts in this rulemaking do
not apply to, and have no effect on,
existing standards.
3. Impacts on Commercial Clothes
Washers
The test procedure for commercial
clothes washers is required to be the
same test procedure established for
residential clothes washers. 42 U.S.C.
6314(a)(8) Thus, the test procedure set
forth in appendix J1 of subpart B of 10
CFR part 430 is also currently used to
test commercial clothes washers. 10
CFR 431.154
DOE noted in the September 2010
NOPR that the impacts on testing
commercial clothes washers would be
limited to the proposed amendments
associated with active washing mode
because commercial clothes washer
standards are based on MEF and WF.
These include the proposed changes to
the test load size specification, TUFs,
DUF, test cloth specification, capacity
measurement, detergent specification,
and water supply pressure specification,
which would affect the measured energy
and water efficiencies of a commercial
clothes washer. DOE stated that the
most significant impacts would be
associated with the proposed
amendments for capacity measurement
and usage factors, but did not have
information to evaluate any impacts for
commercial clothes washers.
DOE received several comments on
the potential impacts of an amended
clothes washer test procedure on
commercial clothes washers and
provided responses to most of these
comments in the August 2011 SNOPR.
NEEA provided one additional
comment on the September 2010 NOPR.
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NEEA stated that most of the provisions
of the new appendix J2 test procedure
will be relevant to the testing and rating
of commercial clothes washers. NEEA
notes, however, that DOE’s current
projected schedule for a new
commercial clothes washer rulemaking
estimates a final rule in 2015, which
would result in an effective date of new
standards for these products in 2018.
NEEA suggests that DOE explore the
possibility of expediting the projected
rulemaking schedule for commercial
clothes washers to more closely align
the metrics and marketplace
performance perceptions of the
residential and commercial products.
(NEEA, No. 12 at p. 15).
DOE also received the following
comments from the August 2011
SNOPR. AHAM and ALS agree with
DOE’s clarification that the impact on
commercial clothes washers would be
limited to the proposed amendments
associated with active washing mode,
since commercial clothes washer
standards are based on MEF and WF,
which do not include standby and off
mode. (AHAM, No. 24 at p. 6; ALS, No.
22 at p. 4).
For the reasons discussed above and
in the August 2011 SNOPR, DOE
concludes that the addition of
procedures to measure the energy use in
standby and off modes would be
inapplicable to and would not affect the
standards for commercial clothes
washers pursuant to 42 U.S.C. 6293(e).
For the active mode provisions of the
revised test procedure that could affect
the measured energy and water
efficiencies of a commercial clothes
washer, DOE notes that 42 U.S.C.
6293(e)(3) provides the following:
Models of covered products in use
before the date on which an amended
energy conservation standard
(developed using the amended test
procedure pursuant to 42 U.S.C.
6293(e)(2)) becomes effective that
comply with the energy conservation
standard applicable to such covered
products on the day before such date are
deemed to comply with the amended
standard. The same is true of revisions
of such models that come into use after
such date and have the same energy
efficiency, energy use or water use
characteristics.
4. Certification, Compliance, and
Enforcement Requirements
Sections 6299–6305 and 6316 of
EPCA authorize DOE to enforce
compliance with the energy and water
conservation standards established for
certain consumer products and
commercial equipment. 42 U.S.C. 6299–
6305 (consumer products), 6316
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(commercial equipment) On March 7,
2011, the Department revised,
consolidated, and streamlined its
existing certification, compliance, and
enforcement regulations for certain
consumer products and commercial and
industrial equipment covered under
EPCA, including residential clothes
washers. 76 FR 12422. These regulations
for residential clothes washers are
codified in 10 CFR 429.20.
The certification requirements for
residential clothes washers consist of a
sampling plan for selection of units for
testing and requirements for
certification reports. In the August 2011
SNOPR, DOE proposed amending the
provisions in the sampling plan in 10
CFR part 429.20(a)(2) that would
include IMEF along with the existing
measure of MEF, and IWF along with
the existing measure of WF.
AHAM and ALS expressed support
for DOE’s proposal to include IMEF and
IWF along with the existing measures of
MEF and WF, respectively in the
sampling plan in 10 CFR 429.20(a)(2).
AHAM also supported DOE’s proposal
to not make any changes to the reporting
requirements for residential clothes
washers. (AHAM, No. 24 at p. 6; ALS,
No. 22 at p. 4)
In the November 2011 SNOPR, DOE
proposed amending the reporting
requirements in 10 CFR 429.20(b)(2) to
require manufacturers, when using
appendix J2, to list all cycle settings
comprising the complete energy test
cycle for each basic model. As described
previously in section III.C.4.f, DOE does
not intend to make this information
publicly available as part of the
certification report.
Today’s final rule modifies the
reporting requirements in 10 CFR
429.20(b)(2) by specifying that a
certification report shall include
publicly available information including
MEF, WF, and capacity; as well as the
list of cycle settings comprising the
complete energy test cycle for each basic
model, which would not be made
publicly available as part of the report.
The requirement to provide the list of
cycle settings comprising the complete
energy test cycle will apply only to test
results obtained using appendix J2.
impacts of test procedure amendments
on the EnergyGuide and ENERGYSTAR
programs.
In the August 2011 SNOPR, DOE
addressed comments related to
EnergyGuide impacts. DOE also
received the following comment
regarding impacts to the ENERGYSTAR
program. NEEA stated that the
ENERGYSTAR program has weathered a
number of standards changes for the
products promoted under its brand, and
has periodically updated its program
specifications in response to these
changes. (NEEA, No. 12 at p. 16) DOE
agrees that the ENERGYSTAR program
periodically updates its program
specifications for each product in
response to changes in efficiency
standards, as well as changes in the
availability of products on the market.
Therefore, DOE expects that the
ENERGYSTAR program will be able to
modify its program specifications for
clothes washers to incorporate the
integrated efficiency metrics after the
compliance date of any amended
standards for clothes washers.
In the August 2011 SNOPR, DOE
proposed to amend the estimated
annual operating cost by incorporating
the cost of energy consumed in the nonactive washing modes. DOE also
proposed to update the number of
annual use cycles, which would affect
the estimated annual operating cost
disclosed on the EnergyGuide label.
DOE received several comments related
to its proposal to update the annual
operating cost, as described previously
in section III.D.
For the reasons described in section
III.D and the August 2011 SNOPR,
today’s final rule amends the estimated
annual operating cost by incorporating
the cost of energy consumed in the nonactive wash modes. Today’s final rule
also updates the annual use cycles,
which affects the estimated annual
operating cost. Pursuant to 42 U.S.C.
6294, the FTC may revise the
EnergyGuide label for residential
clothes washers.
H. Impacts of the Test Procedure
Amendments on EnergyGuide and
ENERGYSTAR
In the September 2010 NOPR, DOE
determined that the proposed test
procedure amendments would not affect
the FTC EnergyGuide labeling program
because DOE did not propose to amend
the estimated annual operating cost
calculation in 10 CFR 430.23. DOE
received multiple comments on the
A. Review Under Executive Order 12866
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IV. Procedural Issues and Regulatory
Review
The Office of Management and Budget
has determined that test procedure
rulemakings do not constitute
‘‘significant regulatory actions’’ under
section 3(f) of Executive Order 12866,
Regulatory Planning and Review, 58 FR
51735 (Oct. 4, 1993). Accordingly, this
action was not subject to review under
the Executive Order by the Office of
Information and Regulatory Affairs
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(OIRA) in the Office of Management and
Budget (OMB).
B. Review Under the Regulatory
Flexibility Act
The Regulatory Flexibility Act (5
U.S.C. 601 et seq.) requires preparation
of an initial regulatory flexibility
analysis (IFRA) for any rule that by law
must be proposed for public comment,
unless the agency certifies that the rule,
if promulgated, will not have a
significant economic impact on a
substantial number of small entities. As
required by Executive Order 13272,
‘‘Proper Consideration of Small Entities
in Agency Rulemaking,’’ 67 FR 53461
(August 16, 2002), DOE published
procedures and policies on February 19,
2003, to ensure that the potential
impacts of its rules on small entities are
properly considered during the DOE
rulemaking process. 68 FR 7990. DOE
has made its procedures and policies
available on the Office of the General
Counsel’s Web site: www.gc.doe.gov.
DOE reviewed today’s rule under the
provisions of the Regulatory Flexibility
Act and the procedures and policies
published on February 19, 2003. DOE
has concluded that the rule would not
have a significant impact on a
substantial number of small entities.
The factual basis for this certification is
as follows:
The Small Business Administration
(SBA) considers a business entity to be
small business, if, together with its
affiliates, it employs less than a
threshold number of workers specified
in 13 CFR part 121. These size standards
and codes are established by the North
American Industry Classification
System (NAICS). The threshold number
for NAICS classification code 335224,
which applies to household laundry
equipment manufacturers and includes
clothes washer manufacturers, is 1,000
employees. Searches of the SBA Web
site 14 to identify clothes washer
manufacturers within these NAICS
codes identified, out of approximately
17 manufacturers supplying clothes
washers in the United States, one small
business. This small business
manufactures laundry appliances,
including clothes washers. The other
manufacturers supplying clothes
washers are large multinational
corporations.
Today’s final rule would amend
DOE’s test procedure by incorporating
testing provisions to address active
mode, standby mode, and off mode
energy and water consumption that will
14 A searchable database of certified small
businesses is available online at: https://
dsbs.sba.gov/dsbs/search/dspldsbs.cfm.
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be used to demonstrate compliance with
energy conservation standards. The test
procedure amendments for measuring
standby and off mode power using the
‘‘alternative method’’ involve measuring
power input when the clothes washer is
in inactive mode or off mode, or both if
both modes are available on the clothes
washer under test, as a proxy for
measuring power consumption in all
low-power modes. These tests can be
conducted in the same facilities used for
the current energy testing of these
products, so it is anticipated that
manufacturers would not incur any
additional facilities costs as a result of
the proposed test procedure
amendments. The power meter required
for these tests might require greater
accuracy than the power meter used for
current energy testing, but the
investment required for a possible
instrumentation upgrade is expected to
be approximately a few thousand
dollars. The duration of each non-active
washing mode test period is expected to
be roughly 30–45 minutes, depending
on stability of the power, using the
alternate approach described
previously. This is comparable to
approximately one-half to two-thirds the
time required to conduct a single energy
test wash cycle. Each clothes washer
tested requires, on average,
approximately 15 test cycles for energy
testing, which equates to about 3 days
of testing. Using the alternate approach
adopted in today’s final rule, DOE
estimates roughly a 3-percent increase
in total test period duration. DOE notes
that the provisions from IEC Standard
62301 (Second Edition) incorporated by
reference in today’s final rule would
require longer test durations in the
event that the threshold stability criteria
of the power measurement are not met.
However, based on DOE’s observations
during testing for the September 2010
NOPR and August 2011 SNOPR, the
likelihood of such a longer test being
required should be small.
DOE also estimates that it currently
costs a manufacturer approximately
$2300 on average, including the cost of
consumables, to conduct energy testing
for a particular clothes washer. DOE
further estimates that the cost of
additional testing for non-active
washing modes using the alternate
approach adopted in today’s final rule
will average $75 per machine, a 3
percent increase over current test costs.
DOE does not expect that these
additional requirements for equipment
and time and additional cost to conduct
the non-active washing mode will
impose a significant economic burden
on entities subject to the applicable
testing requirements. Although the
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small business has significantly lower
sales than other manufacturers over
which to amortize these additional
costs, it produces only a single platform
that would be subject to the proposed
non-active washing mode tests.
Furthermore, the test procedure
amendments for the active washing
mode adopted in today’s final rule will
not increase test burden because they
comprise revisions to calculations rather
than additional, longer, or more
complex methodology.
In response to the August 2011
SNOPR, ALS stated that it takes no
position on DOE’s tentative conclusion
that the September 2010 NOPR and
August 2011 SNOPR would not have a
significant economic impact on a
substantial number of small entities.
ALS stated that it needs to conduct a
significant number of tests utilizing the
proposed test procedure before
commenting on the additional burden
that falls on manufacturers. (ALS, No.
22 at p. 3).
For the reasons discussed above, DOE
concludes and certifies that today’s final
rule will not have a significant
economic impact on a substantial
number of small entities. Accordingly,
DOE has not prepared a regulatory
flexibility analysis for this rulemaking.
DOE has transmitted the certification
and supporting statement of factual
basis to the Chief Counsel for Advocacy
of the SBA for review under 5 U.S.C.
605(b).
C. Review Under the Paperwork
Reduction Act of 1995
Manufacturers of residential clothes
washers must certify to DOE that their
products comply with any applicable
energy conservation standards. In
certifying compliance, manufacturers
must test their products according to the
DOE test procedures for clothes
washers, including any amendments
adopted for those test procedures. DOE
has established regulations for the
certification and recordkeeping
requirements for all covered consumer
products and commercial equipment,
including residential clothes washers.
(76 FR 12422 (March 7, 2011)). The
collection-of-information requirement
for the certification and recordkeeping
is subject to review and approval by
OMB under the Paperwork Reduction
Act (PRA). This requirement has been
approved by OMB under OMB control
number 1910–1400. Public reporting
burden for the certification is estimated
to average 20 hours per response,
including the time for reviewing
instructions, searching existing data
sources, gathering and maintaining the
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data needed, and completing and
reviewing the collection of information.
Notwithstanding any other provision
of the law, no person is required to
respond to, nor shall any person be
subject to a penalty for failure to comply
with, a collection of information subject
to the requirements of the PRA, unless
that collection of information displays a
currently valid OMB Control Number.
D. Review Under the National
Environmental Policy Act of 1969
In this final rule, DOE amends its test
procedure for residential clothes
washers. DOE has determined that this
rule falls into a class of actions that are
categorically excluded from review
under the National Environmental
Policy Act of 1969 (42 U.S.C. 4321 et
seq.) and DOE’s implementing
regulations at 10 CFR part 1021.
Specifically, this rule amends an
existing rule without affecting the
amount, quality or distribution of
energy usage, and, therefore, will not
result in any environmental impacts.
Thus, this rulemaking is covered by
Categorical Exclusion A5 under 10 CFR
part 1021, subpart D, which applies to
any rulemaking that interprets or
amends an existing rule without
changing the environmental effect of
that rule. Accordingly, neither an
environmental assessment nor an
environmental impact statement is
required.
E. Review Under Executive Order 13132
Executive Order 13132, ‘‘Federalism,’’
64 FR 43255 (August 4, 1999) imposes
certain requirements on agencies
formulating and implementing policies
or regulations that preempt State law or
that have Federalism implications. The
Executive Order requires agencies to
examine the constitutional and statutory
authority supporting any action that
would limit the policymaking discretion
of the States and to carefully assess the
necessity for such actions. The
Executive Order also requires agencies
to have an accountable process to
ensure meaningful and timely input by
State and local officials in the
development of regulatory policies that
have Federalism implications. On
March 14, 2000, DOE published a
statement of policy describing the
intergovernmental consultation process
it will follow in the development of
such regulations. 65 FR 13735. DOE
examined this final rule and determined
that it will not have a substantial direct
effect on the States, on the relationship
between the national government and
the States, or on the distribution of
power and responsibilities among the
various levels of government. EPCA
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governs and prescribes Federal
preemption of State regulations as to
energy conservation for the products
that are the subject of today’s final rule.
States can petition DOE for exemption
from such preemption to the extent, and
based on criteria, set forth in EPCA. (42
U.S.C. 6297(d)) No further action is
required by Executive Order 13132.
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F. Review Under Executive Order 12988
Regarding the review of existing
regulations and the promulgation of
new regulations, section 3(a) of
Executive Order 12988, ‘‘Civil Justice
Reform,’’ 61 FR 4729 (Feb. 7, 1996),
imposes on Federal agencies the general
duty to adhere to the following
requirements: (1) Eliminate drafting
errors and ambiguity; (2) write
regulations to minimize litigation; (3)
provide a clear legal standard for
affected conduct rather than a general
standard; and (4) promote simplification
and burden reduction. Section 3(b) of
Executive Order 12988 specifically
requires that Executive agencies make
every reasonable effort to ensure that the
regulation: (1) Clearly specifies the
preemptive effect, if any; (2) clearly
specifies any effect on existing Federal
law or regulation; (3) provides a clear
legal standard for affected conduct
while promoting simplification and
burden reduction; (4) specifies the
retroactive effect, if any; (5) adequately
defines key terms; and (6) addresses
other important issues affecting clarity
and general draftsmanship under any
guidelines issued by the Attorney
General. Section 3(c) of Executive Order
12988 requires Executive agencies to
review regulations in light of applicable
standards in sections 3(a) and 3(b) to
determine whether they are met or it is
unreasonable to meet one or more of
them. DOE has completed the required
review and determined that, to the
extent permitted by law, this final rule
meets the relevant standards of
Executive Order 12988.
G. Review Under the Unfunded
Mandates Reform Act of 1995
Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) requires
each Federal agency to assess the effects
of Federal regulatory actions on State,
local, and Tribal governments and the
private sector. Public Law 104–4, sec.
201 (codified at 2 U.S.C. 1531). For a
regulatory action resulting in a rule that
may cause the expenditure by State,
local, and Tribal governments, in the
aggregate, or by the private sector of
$100 million or more in any one year
(adjusted annually for inflation), section
202 of UMRA requires a Federal agency
to publish a written statement that
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estimates the resulting costs, benefits,
and other effects on the national
economy. (2 U.S.C. 1532(a), (b)) The
UMRA also requires a Federal agency to
develop an effective process to permit
timely input by elected officers of State,
local, and Tribal governments on a
proposed ‘‘significant intergovernmental
mandate,’’ and requires an agency plan
for giving notice and opportunity for
timely input to potentially affected
small governments before establishing
any requirements that might
significantly or uniquely affect small
governments. On March 18, 1997, DOE
published a statement of policy on its
process for intergovernmental
consultation under UMRA. 62 FR
12820; also available at www.gc.doe.gov.
DOE examined today’s final rule
according to UMRA and its statement of
policy and determined that the rule
contains neither an intergovernmental
mandate, nor a mandate that may result
in the expenditure of $100 million or
more in any year, so these requirements
do not apply.
H. Review Under the Treasury and
General Government Appropriations
Act, 1999
Section 654 of the Treasury and
General Government Appropriations
Act, 1999 (Pub. L. 105–277) requires
Federal agencies to issue a Family
Policymaking Assessment for any rule
that may affect family well-being.
Today’s final rule will not have any
impact on the autonomy or integrity of
the family as an institution.
Accordingly, DOE has concluded that it
is not necessary to prepare a Family
Policymaking Assessment.
I. Review Under Executive Order 12630
DOE has determined, under Executive
Order 12630, ‘‘Governmental Actions
and Interference with Constitutionally
Protected Property Rights’’ 53 FR 8859
(March 18, 1988), that this regulation
will not result in any takings that might
require compensation under the Fifth
Amendment to the U.S. Constitution.
J. Review Under Treasury and General
Government Appropriations Act, 2001
Section 515 of the Treasury and
General Government Appropriations
Act, 2001 (44 U.S.C. 3516 note) provides
for agencies to review most
disseminations of information to the
public under guidelines established by
each agency pursuant to general
guidelines issued by OMB. OMB’s
guidelines were published at 67 FR
8452 (Feb. 22, 2002), and DOE’s
guidelines were published at 67 FR
62446 (Oct. 7, 2002). DOE has reviewed
today’s final rule under the OMB and
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13935
DOE guidelines and has concluded that
it is consistent with applicable policies
in those guidelines.
K. Review Under Executive Order 13211
Executive Order 13211, ‘‘Actions
Concerning Regulations That
Significantly Affect Energy Supply,
Distribution, or Use,’’ 66 FR 28355 (May
22, 2001), requires Federal agencies to
prepare and submit to OMB, a
Statement of Energy Effects for any
significant energy action. A ‘‘significant
energy action’’ is defined as any action
by an agency that promulgated or is
expected to lead to promulgation of a
final rule, and that: (1) Is a significant
regulatory action under Executive Order
12866, or any successor order; and (2)
is likely to have a significant adverse
effect on the supply, distribution, or use
of energy; or (3) is designated by the
Administrator of OIRA as a significant
energy action. For any significant energy
action, the agency must give a detailed
statement of any adverse effects on
energy supply, distribution, or use if the
regulation is implemented, and of
reasonable alternatives to the action and
their expected benefits on energy
supply, distribution, and use.
Today’s regulatory action is not a
significant regulatory action under
Executive Order 12866. Moreover, it
would not have a significant adverse
effect on the supply, distribution, or use
of energy, nor has it been designated as
a significant energy action by the
Administrator of OIRA. Therefore, it is
not a significant energy action, and,
accordingly, DOE has not prepared a
Statement of Energy Effects.
L. Review Under Section 32 of the
Federal Energy Administration Act of
1974
Under section 301 of the Department
of Energy Organization Act (Pub. L. 95–
91; 42 U.S.C. 7101), DOE must comply
with section 32 of the Federal Energy
Administration Act of 1974, as amended
by the Federal Energy Administration
Authorization Act of 1977. (15 U.S.C.
788; FEAA) Section 32 essentially
provides in relevant part that, where a
proposed rule authorizes or requires use
of commercial standards, the notice of
proposed rulemaking must inform the
public of the use and background of
such standards. In addition, section
32(c) requires DOE to consult with the
Attorney General and the Chairman of
the Federal Trade Commission (FTC)
concerning the impact of the
commercial or industry standards on
competition.
The amendments to the test procedure
in today’s final rule incorporate testing
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methods contained in the following
commercial standards:
1. AATCC Test Method 79–2010,
Absorbency of Textiles, Revised 2010.
2. AATCC Test Method 118–2007, Oil
Repellency: Hydrocarbon Resistance Test,
Revised 2007.
3. AATCC Test Method 135–2010,
Dimensional Changes of Fabrics after Home
Laundering.
4. IEC Standard 62301, Household
electrical appliances—Measurement of
standby power, Edition 2.0, 2011–01.
DOE has evaluated these standards
and is unable to conclude whether they
fully comply with the requirements of
section 32(b) of the FEAA (i.e., whether
they were developed in a manner that
fully provides for public participation,
comment, and review). DOE has
consulted with both the Attorney
General and the Chairman of the FTC
about the impact on using the methods
contained in these standards and has
received no comments objecting to their
use.
M. Congressional Notification
As required by 5 U.S.C. 801, DOE will
report to Congress on the promulgation
of today’s rule before its effective date.
The report will state that it has been
determined that the rule is not a ‘‘major
rule’’ as defined by 5 U.S.C. 804(2).
N. Approval of the Office of the
Secretary
The Secretary of Energy has approved
publication of this final rule.
List of Subjects
10 CFR Part 429
Confidential business information,
Energy conservation, Household
appliances, Imports, Reporting and
recordkeeping requirements.
10 CFR Part 430
tkelley on DSK3SPTVN1PROD with RULES2
19:45 Mar 06, 2012
Jkt 226001
Authority: 42 U.S.C. 6291–6317.
2. Section 429.20 is amended by:
a. Revising paragraph (a)(2)(i)
introductory text;
■ b. Revising paragraph (a)(2)(ii)
introductory text;
■ c. Adding paragraph (b)(3).
The revisions and addition read as
follows:
■
■
§ 429.20
Residential clothes washers.
(a) * * *
(2) * * *
(i) Any represented value of the water
factor, integrated water factor, the
estimated annual operating cost, the
energy or water consumption, or other
measure of energy or water
consumption of a basic model for which
consumers would favor lower values
shall be greater than or equal to the
higher of:
*
*
*
*
*
(ii) Any represented value of the
modified energy factor, integrated
modified energy factor, or other measure
of energy or water consumption of a
basic model for which consumers would
favor higher values shall be less than or
equal to the lower of:
*
*
*
*
*
(b) * * *
(3) Pursuant to § 429.12(b)(13), a
certification report shall include the
following additional product-specific
information: When using appendix J2, a
list of all cycle selections comprising
the complete energy test cycle for each
basic model.
§ 430.3 Materials incorporated by
reference.
*
*
*
*
*
(c) AATCC. American Association of
Textile Chemists and Colorists, P.O. Box
12215, Research Triangle Park, NC
27709, (919) 549–3526, or go to
www.aatcc.org.
(1) AATCC Test Method 79–2010,
Absorbency of Textiles, Revised 2010,
IBR approved for Appendix J2 to
Subpart B.
(2) AATCC Test Method 118–2007,
Oil Repellency: Hydrocarbon Resistance
Test, Revised 2007, IBR approved for
Appendix J2 to Subpart B.
(3) AATCC Test Method 135–2010,
Dimensional Changes of Fabrics after
Home Laundering, Revised 2010, IBR
approved for Appendix J2 to Subpart B.
*
*
*
*
*
(m) IEC. International Electrotechnical
Commission, available from the
American National Standards Institute,
25 W. 43rd Street, 4th Floor, New York,
NY 10036, (212) 642–4900, or go to
https://webstore.ansi.org.
*
*
*
*
*
(2) IEC Standard 62301 (‘‘IEC 62301’’),
Household electrical appliances—
Measurement of standby power, Edition
2.0, 2011–01, IBR approved for
Appendix J2 to Subpart B.
*
*
*
*
*
■ 5. Section 430.23 is amended by
revising paragraph (j) to read as follows:
§ 430.23 Test procedures for the
measurement of energy and water
consumption.
*
*
*
*
*
(j) Clothes washers. (1) The estimated
annual operating cost for automatic and
semi-automatic clothes washers must be
rounded off to the nearest dollar per
year and is defined as follows:
(i) When using appendix J2 (see the
note at the beginning of appendix J2),
(A) When electrically heated water is
used,
(N1 × ETE1 × CKWH)
Authority: 42 U.S.C. 6291–6309; 28 U.S.C.
2461 note.
4. Section 430.3 is amended by:
a. Redesignating paragraphs (c)
through (o) as paragraphs (d) through
(p);
■ b. Adding new paragraph (c);
■ c. Revising newly designated
paragraphs (m) introductory text and
(m)(2).
The additions and revisions read as
follows:
Where:
N1 = the representative average residential
clothes washer use of 392 cycles per year
according to appendix J1,
ETE1 = the total per-cycle energy
consumption when electrically heated
water is used, in kilowatt-hours per
cycle, determined according to section
4.1.7 of appendix J1, and
CKWH = the representative average unit cost,
in dollars per kilowatt-hour, as provided
by the Secretary.
(B) When gas-heated or oil-heated
water is used,
(N1 × ((MET1 × CKWH) + (HETG1 × CBTU)))
3. The authority citation for part 430
continues to read as follows:
■
Issued in Washington, DC, on February 22,
2012.
Kathleen Hogan,
Deputy Assistant Secretary, Energy Efficiency
and Renewable Energy.
VerDate Mar<15>2010
1. The authority citation for part 429
continues to read as follows:
■
PART 430—ENERGY CONSERVATION
PROGRAM FOR CONSUMER
PRODUCTS
Administrative practice and
procedure, Confidential business
information, Energy conservation,
Household appliances, Imports,
Incorporation by reference,
Intergovernmental relations, Small
businesses.
For the reasons stated in the
preamble, DOE amends parts 429 and
430 of title 10 of the Code of Federal
Regulations, as set forth below:
PART 429—CERTIFICATION,
COMPLIANCE, AND ENFORCEMENT
FOR CONSUMER PRODUCTS AND
COMMERCIAL AND INDUSTRIAL
EQUIPMENT
■
■
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Where:
N1 and CKWH are defined in paragraph
(j)(1)(i)(A) of this section,
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MET1 = the total weighted per-cycle machine
electrical energy consumption, in
kilowatt-hours per cycle, determined
according to section 4.1.6 of appendix J1,
HETG1 = the total per-cycle hot water energy
consumption using gas-heated or oilheated water, in Btu per cycle,
determined according to section 4.1.4 of
appendix J1, and
CBTU = the representative average unit cost,
in dollars per Btu for oil or gas, as
appropriate, as provided by the
Secretary.
(ii) When using appendix J2,
(A) When electrically heated water is
used,
(N2 × (ETE2 + ETSO) × CKWH)
Where:
N2 = the representative average residential
clothes washer use of 295 cycles per year
according to appendix J2,
ETE2 = the total per-cycle energy
consumption when electrically heated
water is used, in kilowatt-hours per
cycle, determined according to section
4.1.7 of appendix J2,
ETSO = the per-cycle combined low-power
mode energy consumption, in kilowatthours per cycle, determined according to
section 4.4 of appendix J2, and
CKWH = the representative average unit cost,
in dollars per kilowatt-hour, as provided
by the Secretary.
(B) When gas-heated or oil-heated
water is used,
(N2 × ((MET2 + ETSO) × CKWH) + (HETG2
× CBTU))
tkelley on DSK3SPTVN1PROD with RULES2
Where:
N2 and ETSO are defined in (j)(1)(ii)(A) of this
section,
MET2 = the total weighted per-cycle machine
electrical energy consumption, in
kilowatt-hours per cycle, determined
according to section 4.1.6 of appendix J2,
CKWH = the representative average unit cost,
in dollars per kilowatt-hour, as provided
by the Secretary,
HETG2 = the total per-cycle hot water energy
consumption using gas-heated or oilheated water, in Btu per cycle,
determined according to section 4.1.4 of
appendix J2,
CBTU = the representative average unit cost,
in dollars per Btu for oil or gas, as
appropriate, as provided by the
Secretary.
(2)(i) The modified energy factor for
automatic and semi-automatic clothes
washers is determined according to
section 4.4 of appendix J1 (when using
appendix J1) and section 4.5 of
appendix J2 (when using appendix J2).
The result shall be rounded off to the
nearest 0.01 cubic foot per kilowatt-hour
per cycle.
(ii) The integrated modified energy
factor for automatic and semi-automatic
clothes washers is determined according
to section 4.6 of appendix J2 (when
using appendix J2). The result shall be
VerDate Mar<15>2010
21:18 Mar 06, 2012
Jkt 226001
rounded off to the nearest 0.01 cubic
foot per kilowatt-hour per cycle.
(3) Other useful measures of energy
consumption for automatic or semiautomatic clothes washers shall be those
measures of energy consumption which
the Secretary determines are likely to
assist consumers in making purchasing
decisions and which are derived from
the application of appendix J1 or
appendix J2, as appropriate. In addition,
the annual water consumption of a
clothes washer can be determined as:
(i) When using appendix J1, the
product of the representative averageuse of 392 cycles per year and the total
weighted per-cycle water consumption
in gallons per cycle determined
according to section 4.2.2 of appendix
J1. The water factor can be determined
according to section 4.2.3 of appendix
J1, with the result rounded off to the
nearest 0.1 gallons per cycle per cubic
foot. The remaining moisture content
can be determined according to section
3.8 of appendix J1, with the result
rounded off to the nearest 0.1 percent.
(ii) When using appendix J2, the
product of the representative averageuse of 295 cycles per year and the total
weighted per-cycle water consumption
for all wash cycles, in gallons per cycle,
determined according to section 4.2.11
of appendix J2. The water factor can be
determined according to section 4.2.12
of appendix J2, with the result rounded
off to the nearest 0.1 gallons per cycle
per cubic foot. The integrated water
factor can be determined according to
section 4.2.13 of appendix J2, with the
result rounded off to the nearest 0.1
gallons per cycle per cubic foot. The
remaining moisture content can be
determined according to section 3.8 of
appendix J2, with the result rounded off
to the nearest 0.1 percent.
*
*
*
*
*
Appendix J to Subpart B of Part 430—
[Removed]
6. Appendix J to subpart B of part 430
is removed.
■
Appendix J1—[Amended]
7. Appendix J1 to subpart B of part
430 is amended by:
■ a. Revising the introductory text;
■ b. Revising section 1.19;
■ c. Revising section 1.22;
■ d. Removing sections 2.6.1.1 through
2.6.1.2.4;
■ e. Revising section 2.6.3.1;
■ f. Revising section 2.6.4.3
■ g. Revising section 2.6.4.5.3(b);
■ h. Revising section 2.6.6.1;
■ i. Revising section 2.6.6.2;
■ j. Revising section 2.10;
■ k. Revising section 3.6;
■
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■
■
■
■
■
■
13937
l. Revising section 4.1.4;
m. Revising section 4.2;
n. Revising section 4.2.3;
o. Removing section 4.5;
p. Revising section 5; and
q. Revising section 6.2.
The revisions read as follows:
Appendix J1 to Subpart B of Part 430—
Uniform Test Method for Measuring the
Energy Consumption of Automatic and
Semi-Automatic Clothes Washers
Manufacturers may use Appendix J1 to
certify compliance with existing DOE energy
conservation standards until the compliance
date of any amended standards that address
standby and off mode power consumption for
residential clothes washers. After this date,
all residential clothes washers shall be tested
using the provisions of Appendix J2.
*
*
*
*
*
1.19 Water factor means the quotient of
the total weighted per-cycle water
consumption divided by the cubic foot (or
liter) capacity of the clothes washer.
*
*
*
*
*
1.22 Cold rinse means the coldest rinse
temperature available on the machine.
*
*
*
*
*
2.6.3.1 Perform 5 complete normal washrinse-spin cycles, the first two with current
AHAM Standard detergent Formula 3 and the
last three without detergent. Place the test
cloth in a clothes washer set at the maximum
water level. Wash the load for ten minutes in
soft water (17 ppm hardness or less) using
27.0 grams + 4.0 grams per pound of cloth
load of AHAM Standard detergent Formula 3.
The wash temperature is to be controlled to
135 °F ± 5 °F (57.2 °C ± 2.8 °C) and the rinse
temperature is to be controlled to 60 °F ± 5
°F (15.6 °C ± 2.8 °C). Repeat the cycle with
detergent and then repeat the cycle three
additional times without detergent, bone
drying the load between cycles (total of five
wash and rinse cycles).
*
*
*
*
*
*
*
*
*
*
2.6.4.3 The thread count shall be 65 × 57
per inch (warp × fill), ±2 percent.
2.6.4.5.3. * * *
(b) Copies of the above standards
incorporated by reference can be obtained
from the American Association of Textile
Chemists and Colorists, P.O. Box 12215,
Research Triangle Park, NC 27709, telephone
(919) 549–3526, fax (919) 549–8933, or email:
orders@aatcc.org.
*
*
*
*
*
2.6.6.1 Average the values of 3 test runs
and fill in Table 2.6.5 of this appendix.
Perform a linear least-squares fit to determine
coefficients A and B such that the standard
RMC values shown in Table 2.6.6.1 of this
appendix (RMCstandard) are linearly related to
the RMC values measured in section 2.6.5 of
this appendix (RMCcloth):
RMCstandard ∼ A * RMCcloth + B
where A and B are coefficients of the linear
least-squares fit.
*
*
*
*
*
2.6.6.2 Perform an analysis of variance
with replication test using two factors, spin
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Federal Register / Vol. 77, No. 45 / Wednesday, March 7, 2012 / Rules and Regulations
speed and lot, to check the interaction of
speed and lot. Use the values from Table
2.6.5 and Table 2.6.6.1 of this Appendix in
the calculation. The ‘‘P’’ value of the Fstatistic for interaction between spin speed
and lot in the variance analysis shall be
greater than or equal to 0.1. If the ‘‘P’’ value
is less than 0.1, the test cloth is unacceptable.
‘‘P’’ is a theoretically based measure of
interaction based on an analysis of variance.
*
*
*
*
*
2.10 Wash time setting. If one wash time
is prescribed in the energy test cycle, that
shall be the wash time setting; otherwise, the
wash time setting shall be the higher of either
the minimum or 70 percent of the maximum
wash time available in the energy test cycle,
regardless of the labeling of suggested dial
locations. If the clothes washer is equipped
with an electromechanical dial controlling
wash time, reset the dial to the minimum
wash time and then turn it in the direction
of increasing wash time to reach the
appropriate setting. If the appropriate setting
is passed, return the dial to the minimum
wash time and then turn in the direction of
increasing wash time until the setting is
reached.
labeled as cold shall not be required for
testing.
*
*
*
*
*
*
3.6 ‘‘Cold Wash’’ (Minimum Wash
Temperature Selection). Water and electrical
energy consumption shall be measured for
each water fill level or test load size as
specified in sections 3.6.1 through 3.6.3 of
this Appendix for the coldest wash
temperature selection available. For a clothes
washer that offers two or more wash
temperature settings labeled as cold, such as
‘‘Cold’’ and ‘‘Tap Cold’’, the setting with the
minimum wash temperature shall be
considered the cold wash. If any of the other
cold wash temperature settings add hot water
to raise the wash temperature above the cold
water supply temperature, as defined in
section 2.3 of this Appendix, those setting(s)
shall be considered warm wash setting(s), as
defined in section 1.18 of this Appendix. If
none of the cold wash temperature settings
add hot water for any of the water fill levels
or test load sizes required for the energy test
cycle, the wash temperature setting labeled
as ‘‘Cold’’ shall be considered the cold wash,
and the other wash temperature setting(s)
*
*
*
*
4.1.4 Total per-cycle hot water energy
consumption using gas-heated or oil-heated
water. Calculate for the energy test cycle the
per-cycle hot water consumption, HETG,
using gas-heated or oil-heated water,
expressed in Btu per cycle (or megajoules per
cycle) and defined as:
HETG=HET×1/e×3412 Btu/kWh or
HETG=HET×1/e×3.6 MJ/kWh
Where:
e = Nominal gas or oil water heater
efficiency=0.75.
HET = As defined in 4.1.3.
*
*
*
*
*
4.2.3 Water factor. Calculate the water
factor, WF, expressed in gallons per cycle per
cubic foot (or liters per cycle per liter), as:
WF = QT/C
Where:
QT = As defined in section 4.2.2.
C = As defined in section 3.1.5.
*
*
*
*
*
5. Test Loads
TABLE 5.1—TEST LOAD SIZES
Container volume
Minimum load
tkelley on DSK3SPTVN1PROD with RULES2
cu. ft.
≥ <
liter
≥ <
0–0.80 ...............................
0.80–0.90 ..........................
0.90–1.00 ..........................
1.00–1.10 ..........................
1.10–1.20 ..........................
1.20–1.30 ..........................
1.30–1.40 ..........................
1.40–1.50 ..........................
1.50–1.60 ..........................
1.60–1.70 ..........................
1.70–1.80 ..........................
1.80–1.90 ..........................
1.90–2.00 ..........................
2.00–2.10 ..........................
2.10–2.20 ..........................
2.20–2.30 ..........................
2.30–2.40 ..........................
2.40–2.50 ..........................
2.50–2.60 ..........................
2.60–2.70 ..........................
2.70–2.80 ..........................
2.80–2.90 ..........................
2.90–3.00 ..........................
3.00–3.10 ..........................
3.10–3.20 ..........................
3.20–3.30 ..........................
3.30–3.40 ..........................
3.40–3.50 ..........................
3.50–3.60 ..........................
3.60–3.70 ..........................
3.70–3.80 ..........................
3.80–3.90 ..........................
3.90–4.00 ..........................
4.00–4.10 ..........................
4.10–4.20 ..........................
4.20–4.30 ..........................
4.30–4.40 ..........................
4.40–4.50 ..........................
4.50–4.60 ..........................
4.60–4.70 ..........................
0–22.7 ...............................
22.7–25.5 ..........................
25.5–28.3 ..........................
28.3–31.1 ..........................
31.1–34.0 ..........................
34.0–36.8 ..........................
36.8–39.6 ..........................
39.6–42.5 ..........................
42.5–45.3 ..........................
45.3–48.1 ..........................
48.1–51.0 ..........................
51.0–53.8 ..........................
53.8–56.6 ..........................
56.6–59.5 ..........................
59.5–62.3 ..........................
62.3–65.1 ..........................
65.1–68.0 ..........................
68.0–70.8 ..........................
70.8–73.6 ..........................
73.6–76.5 ..........................
76.5–79.3 ..........................
79.3–82.1 ..........................
82.1–85.0 ..........................
85.0–87.8 ..........................
87.8–90.6 ..........................
90.6–93.4 ..........................
93.4–96.3 ..........................
96.3–99.1 ..........................
99.1–101.9 ........................
101.9–104.8 ......................
104.8–107.6 ......................
107.6–110.4 ......................
110.4–113.3 ......................
113.3–116.1 ......................
116.1–118.9 ......................
118.9–121.8 ......................
121.8–124.6 ......................
124.6–127.4 ......................
127.4–130.3 ......................
130.3–133.1 ......................
VerDate Mar<15>2010
19:45 Mar 06, 2012
Jkt 226001
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1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
Sfmt 4700
3.00
3.50
3.90
4.30
4.70
5.10
5.50
5.90
6.40
6.80
7.20
7.60
8.00
8.40
8.80
9.20
9.60
10.00
10.50
10.90
11.30
11.70
12.10
12.50
12.90
13.30
13.70
14.10
14.60
15.00
15.40
15.80
16.20
16.60
17.00
17.40
17.80
18.20
18.70
19.10
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Average load
kg
lb
1.36
1.59
1.77
1.95
2.13
2.31
2.49
2.68
2.90
3.08
3.27
3.45
3.63
3.81
3.99
4.17
4.35
4.54
4.76
4.94
5.13
5.31
5.49
5.67
5.85
6.03
6.21
6.40
6.62
6.80
6.99
7.16
7.34
7.53
7.72
7.90
8.09
8.27
8.46
8.65
07MRR2
3.00
3.25
3.45
3.65
3.85
4.05
4.25
4.45
4.70
4.90
5.10
5.30
5.50
5.70
5.90
6.10
6.30
6.50
6.75
6.95
7.15
7.35
7.55
7.75
7.95
8.15
8.35
8.55
8.80
9.00
9.20
9.40
9.60
9.80
10.00
10.20
10.40
10.60
10.85
11.05
kg
1.36
1.47
1.56
1.66
1.75
1.84
1.93
2.02
2.13
2.22
2.31
2.40
2.49
2.59
2.68
2.77
2.86
2.95
3.06
3.15
3.24
3.33
3.42
3.52
3.61
3.70
3.79
3.88
3.99
4.08
4.17
4.26
4.35
4.45
4.54
4.63
4.72
4.82
4.91
5.00
Federal Register / Vol. 77, No. 45 / Wednesday, March 7, 2012 / Rules and Regulations
13939
TABLE 5.1—TEST LOAD SIZES—Continued
Container volume
cu. ft.
≥ <
4.70–4.80
4.80–4.90
4.90–5.00
5.00–5.10
5.10–5.20
5.20–5.30
5.30–5.40
5.40–5.50
5.50–5.60
5.60–5.70
5.70–5.80
5.80–5.90
5.90–6.00
Minimum load
liter
≥ <
..........................
..........................
..........................
..........................
..........................
..........................
..........................
..........................
..........................
..........................
..........................
..........................
..........................
133.1–135.9
135.9–138.8
138.8–141.6
141.6–144.4
144.4–147.2
147.2–150.1
150.1–152.9
152.9–155.7
155.7–158.6
158.6–161.4
161.4–164.2
164.2–167.1
167.1–169.9
lb
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
......................
Maximum load
kg
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
lb
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
Average load
kg
19.50
19.90
20.30
20.70
21.10
21.50
21.90
22.30
22.80
23.20
23.60
24.00
24.40
8.83
9.02
9.20
9.39
9.58
9.76
9.95
10.13
10.32
10.51
10.69
10.88
11.06
lb
11.25
11.45
11.65
11.85
12.05
12.25
12.45
12.65
12.90
13.10
13.30
13.50
13.70
kg
5.10
5.19
5.28
5.38
5.47
5.56
5.65
5.75
5.84
5.93
6.03
6.12
6.21
Notes: (1) All test load weights are bone dry weights.
(2) Allowable tolerance on the test load weights are ±0.10 lbs (0.05 kg).
*
*
*
*
*
6.2 Nonconventional Wash System
Energy Consumption Test. The field test may
consist of a minimum of 10 of the
nonconventional clothes washers (‘‘test
clothes washers’’) and 10 clothes washers
already being distributed in commerce (‘‘base
clothes washers’’). The tests should include
a minimum of 50 energy test cycles per
clothes washer. The test clothes washers and
base clothes washers should be identical in
construction except for the controls or
systems being tested. Equal numbers of both
the test clothes washer and the base clothes
washer should be tested simultaneously in
comparable settings to minimize seasonal or
consumer laundering conditions or
variations. The clothes washers should be
monitored in such a way as to accurately
record the average total energy and water
consumption per cycle, including water
heating energy when electrically heated
water is used, and the energy required to
remove the remaining moisture of the test
load. The field test results should be used to
determine the best method to correlate the
rating of the test clothes washer to the rating
of the base clothes washer.
*
*
*
*
*
6. Add a new Appendix J2 to subpart
B of part 430 to read as follows:
■
tkelley on DSK3SPTVN1PROD with RULES2
Appendix J2 to Subpart B of Part 430—
Uniform Test Method for Measuring the
Energy Consumption of Automatic and
Semi-Automatic Clothes Washers
Manufacturers may use Appendix J1 to
certify compliance with existing DOE energy
conservation standards until the compliance
date of any amended standards that address
standby and off mode power consumption for
residential clothes washers. After this date,
all residential clothes washers shall be tested
using the provisions of Appendix J2.
1. Definitions and Symbols
1.1 Active mode means a mode in which
the clothes washer is connected to a mains
power source, has been activated, and is
performing one or more of the main functions
of washing, soaking, tumbling, agitating,
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rinsing, and/or removing water from the
clothing, or is involved in functions
necessary for these main functions, such as
admitting water into the washer or pumping
water out of the washer. Active mode also
includes delay start and cycle finished
modes.
1.2 Active washing mode means a mode
in which the clothes washer is performing
any of the operations included in a complete
cycle intended for washing a clothing load,
including the main functions of washing,
soaking, tumbling, agitating, rinsing, and/or
removing water from the clothing.
1.3 Adaptive control system means a
clothes washer control system, other than an
adaptive water fill control system, which is
capable of automatically adjusting washer
operation or washing conditions based on
characteristics of the clothes load placed in
the clothes container, without allowing or
requiring consumer intervention or actions.
The automatic adjustments may, for example,
include automatic selection, modification, or
control of any of the following: Wash water
temperature, agitation or tumble cycle time,
number of rinse cycles, and spin speed. The
characteristics of the clothes load, which
could trigger such adjustments, could, for
example, consist of or be indicated by the
presence of either soil, soap, suds, or any
other additive laundering substitute or
complementary product.
NOTE: Appendix J2 does not provide a
means for determining the energy
consumption of a clothes washer with an
adaptive control system. A waiver must be
obtained pursuant to 10 CFR 430.27 to
establish an acceptable test procedure for
each such clothes washer.
1.4 Adaptive water fill control system
means a clothes washer water fill control
system which is capable of automatically
adjusting the water fill level based on the size
or weight of the clothes load placed in the
clothes container, without allowing or
requiring consumer intervention or actions.
1.5 Bone-dry means a condition of a load
of test cloth which has been dried in a dryer
at maximum temperature for a minimum of
10 minutes, removed and weighed before
cool down, and then dried again for 10
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minute periods until the final weight change
of the load is 1 percent or less.
1.6 Clothes container means the
compartment within the clothes washer that
holds the clothes during the operation of the
machine.
1.7 Cold rinse means the coldest rinse
temperature available on the machine.
1.8 Combined low-power mode means the
aggregate of available modes other than
active washing mode, including inactive
mode, off mode, delay start mode, and cycle
finished mode.
1.9 Compact means a clothes washer
which has a clothes container capacity of less
than 1.6 ft3 (45 L).
1.10 Cycle finished mode means an active
mode which provides continuous status
display, intermittent tumbling, or air
circulation following operation in active
washing mode.
1.11 Deep rinse cycle means a rinse cycle
in which the clothes container is filled with
water to a selected level and the clothes load
is rinsed by agitating it or tumbling it through
the water.
1.12 Delay start mode means an active
mode in which activation of active washing
mode is facilitated by a timer.
1.13 Energy test cycle for a basic model
means:
(A) The cycle selection recommended by
the manufacturer for washing cotton or linen
clothes, and includes all wash/rinse
temperature selections for each of the
temperature use factors (TUFs) offered in that
cycle, and
(B) If the cycle selection described in Part
(A) does not include all wash/rinse
temperature selections for each of the TUFs
available on the clothes washer, the energy
test cycle shall include, in addition to Part
(A), the alternate cycle selection(s) offering
these remaining wash/rinse temperature
selection(s), tested only at the wash/rinse
temperature selection(s) for each TUF not
available on the cycle selection described in
Part (A).
Where multiple alternate cycle selections
offer a wash/rinse temperature selection for
which a TUF has been developed, and that
is not available on the cycle selection
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13940
Federal Register / Vol. 77, No. 45 / Wednesday, March 7, 2012 / Rules and Regulations
recommended by the manufacturer for
washing cotton or linen clothes described in
Part (A), the alternate cycle selection certified
by the manufacturer to have the highest
energy consumption for that TUF, as
measured according to section 2.13, shall be
included in the energy test cycle, so that each
TUF that is available on the clothes washer
has been tested once.
(C) All cycle selections included under
Part (A) and all cycle selections included
under Part (B) shall be tested using each
appropriate load size as defined in section
2.8 and Table 5.1 of this appendix.
(D) For any cycle selection tested under (A)
or (B), the manufacturer default settings shall
be used, except for the temperature selection,
if necessary. This includes wash conditions
such as agitation/tumble operation, soil level,
spin speed(s), wash times, rinse times, and
all other wash parameters or optional
features applicable to that cycle, including
water heating time for water heating clothes
washers.
(E) Each wash cycle included as part of the
energy test cycle shall include the entire
active washing mode and exclude any delay
start or cycle finished modes.
(F) The energy test cycle shall not include
any cycle, if available, that is dedicated for
cleaning, deodorizing, or sanitizing the
clothes washer, and is separate from clothes
washing cycles.
1.14 IEC 62301 means the test standard
published by the International
Electrotechnical Commission, entitled
‘‘Household electrical appliances–
Measurement of standby power,’’ Publication
62301, Edition 2.0 2011–01 (incorporated by
reference; see § 430.3).
1.15 Inactive mode means a standby
mode that facilitates the activation of active
mode by remote switch (including remote
control), internal sensor, or timer, or that
provides continuous status display.
1.16 Integrated modified energy factor
means the quotient of the cubic foot (or liter)
capacity of the clothes container divided by
the total clothes washer energy consumption
per cycle, with such energy consumption
expressed as the sum of:
(a) The machine electrical energy
consumption;
(b) The hot water energy consumption;
(c) The energy required for removal of the
remaining moisture in the wash load; and
(d) The combined low-power mode energy
consumption.
1.17 Integrated water factor means the
quotient of the total weighted per-cycle water
consumption for all wash cycles in gallons
divided by the cubic foot (or liter) capacity
of the clothes washer.
1.18 Load usage factor means the
percentage of the total number of wash loads
that a user would wash a particular size
(weight) load.
1.19 Lot means a quantity of cloth that
has been manufactured with the same
batches of cotton and polyester during one
continuous process.
1.20 Manual control system means a
clothes washer control system which requires
that the consumer make the choices that
determine washer operation or washing
conditions, such as, for example, wash/rinse
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temperature selections and wash time, before
starting the cycle.
1.21 Manual water fill control system
means a clothes washer water fill control
system which requires the consumer to
determine or select the water fill level.
1.22 Modified energy factor means the
quotient of the cubic foot (or liter) capacity
of the clothes container divided by the total
clothes washer energy consumption per
cycle, with such energy consumption
expressed as the sum of the machine
electrical energy consumption, the hot water
energy consumption, and the energy required
for removal of the remaining moisture in the
wash load.
1.23 Non-water-heating clothes washer
means a clothes washer which does not have
an internal water heating device to generate
hot water.
1.24 Off mode means a mode in which
the clothes washer is connected to a mains
power source and is not providing any active
or standby mode function, and where the
mode may persist for an indefinite time. An
indicator that only shows the user that the
product is in the off position is included
within the classification of an off mode.
1.25 Roll means a subset of a lot.
1.26 Spray rinse cycle means a rinse cycle
in which water is sprayed onto the clothes
for a period of time without maintaining any
specific water level in the clothes container.
1.27 Standard means a clothes washer
which has a clothes container capacity of
1.6 ft3 (45 L) or greater.
1.28 Standby mode means any mode in
which the clothes washer is connected to a
mains power source and offers one or more
of the following user oriented or protective
functions that may persist for an indefinite
time:
(a) To facilitate the activation of other
modes (including activation or deactivation
of active mode) by remote switch (including
remote control), internal sensor, or timer;
(b) Continuous functions, including
information or status displays (including
clocks) or sensor-based functions.
A timer is a continuous clock function
(which may or may not be associated with a
display) that provides regular scheduled
tasks (e.g., switching) and that operates on a
continuous basis.
1.29 Symbol usage. The following
identity relationships are provided to help
clarify the symbology used throughout this
procedure.
C—Capacity
C (with subscripts)—Cold Water
Consumption
D—Energy Consumption for Removal of
Moisture from Test Load
E—Electrical Energy Consumption
F—Load Usage Factor
H—Hot Water Consumption
HE—Hot Water Energy Consumption
ME—Machine Electrical Energy
Consumption
P—Power
Q—Water Consumption
RMC—Remaining Moisture Content
S—Annual Hours
TUF—Temperature Use Factor
V—Temperature-Weighted Hot Water
Consumption
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W—Mass of Water
WC—Weight of Test Load After Extraction
WI—Initial Weight of Dry Test Load
Subscripts:
a or avg—Average Test Load
B—Part B of the Energy Test Cycle
c—Cold Wash (minimum wash temp.)
corr—Corrected (RMC values)
h—Hot Wash (maximum wash temp. ≤135 °F
(57.2 °C))
ia—Inactive Mode
LP—Combined Low-Power Mode
m—Extra Hot Wash (maximum wash temp.
>135 °F (57.2 °C))
n—Minimum Test Load
o—Off Mode
oi—Combined Off and Inactive Modes
T—Total
w—Warm Wash
ww—Warm Wash/Warm Rinse
x—Maximum Test Load
The following examples are provided to
show how the above symbols can be used to
define variables:
Emx = ‘‘Electrical Energy Consumption’’ for
an ‘‘Extra Hot Wash’’ and ‘‘Maximum Test
Load’’
HEmin = ‘‘Hot Water Energy Consumption’’
for the ‘‘Minimum Test Load’’
Pia = ‘‘Power’’ in ‘‘Inactive Mode’’
Qhmin = ‘‘Water Consumption’’ for a ‘‘Hot
Wash’’ and ‘‘Minimum Test Load’’
TUFm = ‘‘Temperature Use Factor’’ for an
‘‘Extra Hot Wash’’
1.30 Temperature use factor means, for a
particular wash/rinse temperature setting, the
percentage of the total number of wash loads
that an average user would wash with that
setting.
1.31 Thermostatically controlled water
valves means clothes washer controls that
have the ability to sense and adjust the hot
and cold supply water.
1.32 Uniformly distributed warm wash
temperature selection(s) means (A) multiple
warm wash selections for which the warm
wash water temperatures have a linear
relationship with all discrete warm wash
selections when the water temperatures are
plotted against equally spaced consecutive
warm wash selections between the hottest
warm wash and the coldest warm wash. If
the warm wash has infinite selections, the
warm wash water temperature has a linear
relationship with the distance on the
selection device (e.g. dial angle or slide
movement) between the hottest warm wash
and the coldest warm wash. The criteria for
a linear relationship as specified above is that
the difference between the actual water
temperature at any warm wash selection and
the point where that temperature is depicted
on the temperature/selection line formed by
connecting the warmest and the coldest
warm selections is less than ±5 percent. In all
cases, the mean water temperature of the
warmest and the coldest warm selections
must coincide with the mean of the ‘‘hot
wash’’ (maximum wash temperature ≤135 °F
(57.2 °C)) and ‘‘cold wash’’ (minimum wash
temperature) water temperatures within
±3.8 °F (±2.1 °C); or (B) on a clothes washer
with only one warm wash temperature
selection, a warm wash temperature selection
with a water temperature that coincides with
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the mean of the ‘‘hot wash’’ (maximum wash
temperature ≤135 °F (57.2 °C)) and ‘‘cold
wash’’ (minimum wash temperature) water
temperatures within ±3.8 °F (±2.1 °C).
1.33 Warm rinse means the hottest rinse
temperature available on the machine.
1.34 Warm wash means all wash
temperature selections that are below the
maximum wash temperature ≤135 °F
(57.2 °C) and above the minimum wash
temperature.
1.35 Water factor means the quotient of
the total weighted per-cycle water
consumption for cold wash divided by the
cubic foot (or liter) capacity of the clothes
washer.
1.36 Water-heating clothes washer means
a clothes washer where some or all of the hot
water for clothes washing is generated by a
water heating device internal to the clothes
washer.
2. Testing Conditions
2.1 Installation. Install the clothes washer
in accordance with manufacturer’s
instructions. For combined low-power mode
testing, the product shall be installed in
accordance with Section 5, Paragraph 5.2 of
IEC 62301 (incorporated by reference; see
§ 430.3), disregarding the provisions
regarding batteries and the determination,
classification, and testing of relevant modes.
2.2 Electrical energy supply.
2.2.1 Supply voltage and frequency.
Maintain the electrical supply at the clothes
washer terminal block within 2 percent of
120, 120/240, or 120/208Y volts as applicable
to the particular terminal block wiring
system and within 2 percent of the nameplate
frequency as specified by the manufacturer.
If the clothes washer has a dual voltage
conversion capability, conduct test at the
highest voltage specified by the
manufacturer.
2.2.2 Supply voltage waveform. For the
combined low-power mode testing, maintain
the electrical supply voltage waveform
indicated in Section 4, Paragraph 4.3.2 of IEC
62301. If the power measuring instrument
used for testing is unable to measure and
record the total harmonic content during the
test measurement period, it is acceptable to
measure and record the total harmonic
content immediately before and after the test
measurement period.
2.3 Supply Water.
2.3.1 Clothes washers in which electrical
energy consumption or water energy
consumption are affected by the inlet water
temperature. (For example, water heating
clothes washers or clothes washers with
thermostatically controlled water valves.).
The temperature of the hot water supply at
the water inlets shall not exceed 135 °F
(57.2 °C) and the cold water supply at the
water inlets shall not exceed 60 °F (15.6 °C).
A water meter shall be installed in both the
hot and cold water lines to measure water
consumption.
2.3.2 Clothes washers in which electrical
energy consumption and water energy
consumption are not affected by the inlet
water temperature. The temperature of the
hot water supply shall be maintained at
135 °F ± 5 °F (57.2 °C ± 2.8 °C) and the cold
water supply shall be maintained at 60 °F ±
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5 °F (15.6 °C ± 2.8 °C). A water meter shall
be installed in both the hot and cold water
lines to measure water consumption.
2.4 Water pressure. The static water
pressure at the hot and cold water inlet
connection of the clothes washer shall be
maintained at 35 pounds per square inch
gauge (psig) ±2.5 psig (241.3 kPa ±17.2 kPa)
when the water is flowing. The static water
pressure for a single water inlet connection
shall be maintained at 35 psig ±2.5 psig
(241.3 kPa ±17.2 kPa) when the water is
flowing. A water pressure gauge shall be
installed in both the hot and cold water lines
to measure water pressure.
2.5 Instrumentation. Perform all test
measurements using the following
instruments, as appropriate:
2.5.1 Weighing scales.
2.5.1.1 Weighing scale for test cloth. The
scale shall have a resolution of no larger than
0.2 oz (5.7 g) and a maximum error no greater
than 0.3 percent of the measured value.
2.5.1.2 Weighing scale for clothes
container capacity measurement. The scale
should have a resolution no larger than 0.50
lbs (0.23 kg) and a maximum error no greater
than 0.5 percent of the measured value.
2.5.2 Watt-hour meter. The watt-hour
meter shall have a resolution no larger than
1 Wh (3.6 kJ) and a maximum error no greater
than 2 percent of the measured value for any
demand greater than 50 Wh (180.0 kJ).
2.5.3 Watt meter. The watt meter used to
measure combined low-power mode power
consumption shall comply with the
requirements specified in Section 4,
Paragraph 4.4 of IEC 62301. If the power
measuring instrument used for testing is
unable to measure and record the crest factor,
power factor, or maximum current ratio
during the test measurement period, it is
acceptable to measure and record the crest
factor, power factor, and maximum current
ratio immediately before and after the test
measurement period.
2.5.4 Temperature measuring device. The
device shall have an error no greater than
±1 °F (±0.6 °C) over the range being
measured.
2.5.5 Water meter. The water meter shall
have a resolution no larger than 0.1 gallons
(0.4 liters) and a maximum error no greater
than 2 percent for the water flow rates being
measured.
2.5.6 Water pressure gauge. The water
pressure gauge shall have a resolution of 1
pound per square inch gauge (psig) (6.9 kPa)
and shall have an error no greater than 5
percent of any measured value.
2.6 Test cloths.
2.6.1 Energy Test Cloth. The energy test
cloth shall be made from energy test cloth
material, as specified in section 2.6.4 of this
Appendix, that is 24 ± 1⁄2 inches by 36 ± 1⁄2
inches (61.0 ± 1.3 cm by 91.4 ± 1.3 cm) and
has been hemmed to 22 ± 1⁄2 inches by 34 ±
1⁄2 inches (55.9 ± 1.3 cm by 86.4 ± 1.3 cm)
before washing. The energy test cloth shall be
clean and shall not be used for more than 60
test runs (after preconditioning as specified
in 2.6.3 of this appendix). All energy test
cloth must be permanently marked
identifying the lot number of the material.
Mixed lots of material shall not be used for
testing a clothes washer.
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13941
2.6.2 Energy Stuffer Cloth. The energy
stuffer cloth shall be made from energy test
cloth material, as specified in section 2.6.4 of
this Appendix, and shall consist of pieces of
material that are 12 ± 1⁄4 inches by 12 ± 1⁄4
inches (30.5 ± 0.6 cm by 30.5 ± 0.6 cm) and
have been hemmed to 10 ± 1⁄4 inches by 10
± 1⁄4 inches (25.4 ± 0.6 cm by 25.4 ± 0.6 cm)
before washing. The energy stuffer cloth shall
be clean and shall not be used for more than
60 test runs (after preconditioning as
specified in section 2.6.3 of this Appendix).
All energy stuffer cloth must be permanently
marked identifying the lot number of the
material. Mixed lots of material shall not be
used for testing a clothes washer.
2.6.3 Preconditioning of Test Cloths. The
new test cloths, including energy test cloths
and energy stuffer cloths, shall be preconditioned in a clothes washer in the
following manner:
2.6.3.1 Perform 5 complete normal washrinse-spin cycles, the first two with AHAM
Standard detergent Formula 3 and the last
three without detergent. Place the test cloth
in a clothes washer set at the maximum water
level. Wash the load for ten minutes with a
minimum fill of 20 gallons of soft water
(17 ppm hardness or less) using 27.0 grams
+ 4.0 grams per pound of cloth load of
AHAM Standard detergent Formula 3. The
wash temperature is to be controlled to 135
°F ± 5°F (57.2 °C ± 2.8 °C) and the rinse
temperature is to be controlled to 60°F ± 5°F
(15.6 °C ± 2.8 °C). Repeat the cycle with
detergent and then repeat the cycle three
additional times without detergent, bone
drying the load between cycles (total of five
wash and rinse cycles).
2.6.4 Energy test cloth material. The
energy test cloths and energy stuffer cloths
shall be made from fabric meeting the
following specifications. The material should
come from a roll of material with a width of
approximately 63 inches and approximately
500 yards per roll. However, other sizes may
be used if they fall within the specifications.
2.6.4.1 Nominal fabric type. Pure finished
bleached cloth made with a momie or granite
weave, which is nominally 50 percent cotton
and 50 percent polyester.
2.6.4.2 The fabric weight specification
shall be 5.60 ± 0.25 ounces per square yard
(190.0 ± 8.4 g/m2).
2.6.4.3 The thread count shall be 65 × 57
per inch (warp × fill), ±2 percent.
2.6.4.4 The warp yarn and filling yarn
shall each have fiber content of 50 percent ±4
percent cotton, with the balance being
polyester, and be open end spun, 15/1 ±5
percent cotton count blended yarn.
2.6.4.5 Water repellent finishes, such as
fluoropolymer stain resistant finishes shall
not be applied to the test cloth. The absence
of such finishes shall be verified by:
2.6.4.5.1 AATCC Test Method 118–2007,
(incorporated by reference; see § 430.3), for
each new lot of test cloth (when purchased
from the mill) to confirm the absence of
Scotchguard TM or other water repellent
finish (required scores of ‘‘D’’ across the
board).
2.6.4.5.2 AATCC Test Method 79–2010,
(incorporated by reference; see § 430.3), for
each new lot of test cloth (when purchased
from the mill) to confirm the absence of
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2.6.4.6.2 An RMC correction curve shall
be calculated as specified in section 2.6.6 of
this Appendix.
2.6.4.7 The maximum shrinkage after
preconditioning shall not be more than 5
percent of the length and width. Measure per
AATCC Test Method 135–2010,
(incorporated by reference; see § 430.3).
2.6.5 Standard Extractor RMC Test
Procedure. The following procedure is used
to evaluate the moisture absorption and
retention characteristics of a lot of test cloth
ScotchguardTM or other water repellent
finish (time to absorb one drop should be on
the order of 1 second).
2.6.4.6 The moisture absorption and
retention shall be evaluated for each new lot
of test cloth by the Standard Extractor
Remaining Moisture Content (RMC) Test
specified in section 2.6.5 of this Appendix.
2.6.4.6.1 Repeat the Standard Extractor
RMC Test in section 2.6.5 of this Appendix
three times.
by measuring the RMC in a standard
extractor at a specified set of conditions.
Table 2.6.5 of this Appendix is the matrix of
test conditions. In the table, ‘‘g Force’’
represents units of gravitational acceleration.
When this matrix is repeated 3 times, a total
of 60 extractor RMC test runs are required.
For the purpose of the extractor RMC test, the
test cloths may be used for up to 60 test runs
(after preconditioning as specified in section
2.6.3 of this Appendix).
TABLE 2.6.5—MATRIX OF EXTRACTOR RMC TEST CONDITIONS
Warm soak
Cold soak
‘‘g Force’’
15 min. spin
4 min. spin
15 min. spin
4 min. spin
100
200
350
500
650
2.6.5.1 The standard extractor RMC tests
shall be run in a North Star Engineered
Products Inc. (formerly Bock) Model 215
extractor (having a basket diameter of 20
inches, height of 11.5 inches, and volume of
2.09 ft3), with a variable speed drive (North
Star Engineered Products, P.O. Box 5127,
Toledo, OH 43611) or an equivalent extractor
with same basket design (i.e. diameter,
height, volume, and hole configuration) and
variable speed drive. Table 2.6.5.1 shows the
extractor spin speed, in revolutions per
minute (RPM), that shall be used to attain
each required g-force level.
TABLE 2.6.5.1—EXTRACTOR SPIN
SPEEDS FOR EACH TEST CONDITION
‘‘g Force’’
100
200
350
500
650
............................................
............................................
............................................
............................................
............................................
RPM
594
840
1111
1328
1514
±
±
±
±
±
1
1
1
1
1
tkelley on DSK3SPTVN1PROD with RULES2
2.6.5.2 Test Load. Test loads shall be
comprised of randomly selected cloth at the
beginning, middle and end of a lot. Test
cloths shall be preconditioned in accordance
with section 2.6.3 of this Appendix. The load
size shall be 8.4 lbs. It is acceptable to use
two test loads for standard extractor RMC
tests, with each load used for half of the total
number of required tests.
2.6.5.3 Procedure.
2.6.5.3.1 Using a dryer that complies with
the temperature requirements specified in
section 2.12 of this Appendix, dry the test
cloth until it is ‘‘bone-dry’’ according to the
definition in section 1.5 of this Appendix.
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Record the ‘‘bone-dry’’ weight of the test load
(WI).
2.6.5.3.2 Prepare the test load for soak by
grouping four test cloths into loose bundles.
Bundles are created by hanging four cloths
vertically from one corner and loosely
wrapping the test cloth onto itself to form the
bundle. Bundles should be wrapped loosely
to ensure consistency of water extraction.
Bundles are then placed into the water to
soak. Eight to nine bundles will be formed
depending on the test load. The ninth bundle
may not equal four cloths but can incorporate
energy stuffer cloths to help offset the size
difference.
2.6.5.3.3 Soak the test load for 20 minutes
in 10 gallons of soft (<17 ppm) water. The
entire test load shall be submerged. The
water temperature shall be 100 °F ± 5°F (37.8
°C ± 2.8 °C) at all times between the start and
end of the soak.
2.6.5.3.4 Remove the test load and allow
each of the test cloth bundles to drain over
the water bath for a maximum of 5 seconds.
2.6.5.3.5 Manually place the test cloth
bundles in the basket of the extractor,
distributing them evenly by eye. The
draining and loading process shall take no
longer than 1 minute. Spin the load at a fixed
speed corresponding to the intended
centripetal acceleration level (measured in
units of the acceleration of gravity, g) ± 1g for
the intended time period ± 5 seconds. The
timer shall begin when the extractor meets
the required spin speed for each test.
2.6.5.3.6 Record the weight of the test
load immediately after the completion of the
extractor spin cycle (WC).
2.6.5.3.7 Calculate the remaining
moisture content of the test load as (WC–WI)/
WI.
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2.6.5.3.8 It is not necessary to drain the
soak tub if the water bath is corrected for
water level and temperature before the next
extraction.
2.6.5.3.9 It is not necessary to dry the test
load in between extraction runs. However,
the bone dry weight shall be checked after
every 12 extraction runs to make sure the
bone dry weight is within tolerance (8.4 ± 0.1
lb).
2.6.5.3.10 The test load must be soaked
and extracted once following bone drying,
before continuing with the remaining
extraction runs. This extraction shall be
performed at the same spin speed used for
the extraction run prior to bone drying, for
a time period of 4 minutes. Either warm or
cold soak temperature may be used.
2.6.5.3.11 The remaining moisture
content of the test load shall be measured at
five g levels: 100 g, 200 g, 350 g, 500 g, and
650 g, using two different spin times at each
g level: 4 minutes and 15 minutes.
2.6.5.4 Repeat section 2.6.5.3 of this
Appendix using soft (<17 ppm) water at 60
°F ± 5 °F (15.6 °C ± 2.8 °C).
2.6.6 Calculation of RMC correction curve.
2.6.6.1 Average the values of 3 test runs,
and fill in Table 2.6.5 of this appendix.
Perform a linear least-squares fit to determine
coefficients A and B such that the standard
RMC values shown in Table 2.6.6.1 of this
appendix (RMCstandard) are linearly related to
the RMC values measured in section 2.6.5 of
this appendix (RMCcloth):
RMCstandard ∼ A * RMCcloth + B
where A and B are coefficients of the linear
least-squares fit.
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TABLE 2.6.6.1—STANDARD RMC VALUES (RMC STANDARD)
RMC percentage
Warm soak
‘‘g Force’’
Cold soak
15 min. spin
(percent)
100
200
350
500
650
4 min. spin
(percent)
15 min. spin
(percent)
4 min. spin
(percent)
45.9
35.7
29.6
24.2
23.0
49.9
40.4
33.1
28.7
26.4
49.7
37.9
30.7
25.5
24.1
52.8
43.1
35.8
30.0
28.0
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
2.6.6.2 Perform an analysis of variance
with replication test using two factors, spin
speed and lot, to check the interaction of
speed and lot. Use the values from Table
2.6.5 and Table 2.6.6.1 of this Appendix in
the calculation. The ‘‘P’’ value of the
F-statistic for interaction between spin speed
and lot in the variance analysis shall be
greater than or equal to 0.1. If the ‘‘P’’ value
is less than 0.1, the test cloth is unacceptable.
‘‘P’’ is a theoretically based measure of
interaction based on an analysis of variance.
2.6.7 Application of the RMC correction
curve.
2.6.7.1 Using the coefficients A and B
calculated in section 2.6.6.1 of this
Appendix:
RMCcorr = A × RMC + B
2.6.7.2 Apply this RMC correction curve
to measured RMC values in sections 3.8.2.6,
3.8.3.2, and 3.8.3.4 of this Appendix.
2.7 Test Load Sizes. Maximum,
minimum, and, when required, average test
load sizes shall be determined using Table
5.1 of this Appendix and the clothes
container capacity as measured in sections
3.1.1 through 3.1.5 of this Appendix. Test
loads shall consist of energy test cloths,
except that adjustments to the test loads to
achieve proper weight can be made by the
use of energy stuffer cloths with no more
than 5 stuffer cloths per load.
2.8 Use of Test Loads. Table 2.8 of this
Appendix defines the test load sizes and
corresponding water fill settings which are to
be used when measuring water and energy
consumptions. Adaptive water fill control
system and manual water fill control system
are defined in section 1 of this Appendix:
TABLE 2.8—TEST LOAD SIZES AND WATER FILL SETTINGS REQUIRED
Manual water fill control system
Adaptive water fill control system
Water fill setting
Test load size
Water fill setting
Max ................................................
Max ...............................................
Max ...............................................
As determined by the Clothes
Washer.
Min .................................................
tkelley on DSK3SPTVN1PROD with RULES2
Test load size
Min ................................................
Avg Min.
2.8.1 The test load sizes to be used to
measure RMC are specified in section 3.8.1
of this Appendix.
2.8.2 Test loads for energy and water
consumption measurements shall be bone
dry prior to the first cycle of the test, and
dried to a maximum of 104 percent of bone
dry weight for subsequent testing.
2.8.3 Load the energy test cloths by
grasping them in the center, shaking them to
hang loosely and then put them into the
clothes container prior to activating the
clothes washer.
2.9 Pre-conditioning of Clothes Washer.
2.9.1 Non-water-heating clothes washer.
If the clothes washer has not been filled with
water in the preceding 96 hours, precondition it by running it through a cold
rinse cycle and then draining it to ensure that
the hose, pump, and sump are filled with
water.
2.9.2 Water-heating clothes washer. If the
clothes washer has not been filled with water
in the preceding 96 hours, or if it has not
been in the test room at the specified ambient
conditions for 8 hours, pre-condition it by
running it through a cold rinse cycle and
then draining it to ensure that the hose,
pump, and sump are filled with water.
2.10 Wash time setting. If one wash time
is prescribed in the energy test cycle, that
shall be the wash time setting; otherwise, the
wash time setting shall be the higher of either
the minimum or 70 percent of the maximum
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wash time available in the energy test cycle,
regardless of the labeling of suggested dial
locations. If the clothes washer is equipped
with an electromechanical dial controlling
wash time, reset the dial to the minimum
wash time and then turn it in the direction
of increasing wash time to reach the
appropriate setting. If the appropriate setting
is passed, return the dial to the minimum
wash time and then turn in the direction of
increasing wash time until the setting is
reached.
2.11 Test room temperature. For all
clothes washers, maintain the test room
ambient air temperature at 75 ± 5 °F (23.9 ±
2.8 °C) for active mode testing and combined
low-power mode testing. Do not use the test
room ambient air temperature conditions
specified in Section 4, Paragraph 4.2 of IEC
62301 for combined low-power mode testing.
2.12 Bone dryer temperature. The dryer
used for bone drying must heat the test cloth
and energy stuffer cloths above 210 °F (99
°C).
2.13 Energy consumption for the purpose
of certifying the cycle selection(s) to be
included in Part (B) of the energy test cycle
definition. Where multiple alternate cycle
selections offer a wash/rinse temperature
selection for which a TUF has been
developed, and that is not available on the
cycle selection recommended by the
manufacturer for washing cotton or linen
clothes described in Part (A) of the energy
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test cycle definition, the alternate cycle
selection with the highest energy
consumption for that TUF, as measured
according to this section, shall be included
in the energy test cycle.
2.13.1 For the TUF being considered
under this section, establish the testing
conditions set forth in section 2 of this test
procedure. Select the applicable cycle
selection and temperature selection. Use the
manufacturer default settings for agitation/
tumble operation, soil level, spin speed(s),
wash times, rinse times, and all other wash
parameters or optional features applicable to
that cycle selection, including water heating
time for water heating clothes washers.
2.13.2 Use the clothes washer’s maximum
test load size, determined from Table 5.1, for
testing under this section.
2.13.3 For clothes washers with a manual
water fill control system, user-adjustable
adaptive water fill control system, or
adaptive water fill control system with
alternate manual water fill control system,
use the water fill selector setting resulting in
the maximum water level available for each
cycle selection for testing under this section.
2.13.4 Each wash cycle tested under this
section shall include the entire active
washing mode and exclude any delay start or
cycle finished modes.
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2.13.5 Measure each cycle selection’s
electrical energy consumption (EB) and hot
water consumption (HB). Calculate the total
energy consumption for each cycle selection
(ETB), as follows:
ETB = EB + (HB × T × K)
Where:
EB is the electrical energy consumption,
expressed in kilowatt-hours per cycle.
HB is the hot water consumption, expressed
in gallons per cycle.
T = temperature rise = 75 °F (41.7 °C)
K = Water specific heat in kilowatt-hours per
gallon per degree F = 0.00240 kWh/gal°F (0.00114 kWh/L-°C)
3. Test Measurements
3.1 Clothes container capacity. Measure
the entire volume which a clothes load could
occupy within the clothes container during
active mode washer operation according to
the following procedures:
3.1.1 Place the clothes washer in such a
position that the uppermost edge of the
clothes container opening is leveled
horizontally, so that the container will hold
the maximum amount of water. For frontloading clothes washers, the shipping bolts
and door seal shall remain in place during
the capacity measurement.
3.1.2 Line the inside of the clothes
container with 2 mil (0.051 mm) plastic
sheet. All clothes washer components which
occupy space within the clothes container
and which are recommended for use with the
energy test cycle shall be in place and shall
be lined with 2 mil (0.051 mm) plastic sheet
to prevent water from entering any void
space.
3.1.3 Record the total weight of the
machine before adding water.
3.1.4 Fill the clothes container manually
with either 60 °F ± 5 °F (15.6 °C ± 2.8 °C)
or 100 °F ± 10 °F (37.8 °C ± 5.5 °C) water,
with the door open. For a top-loading,
vertical-axis clothes washer, fill the clothes
container to the uppermost edge of the
rotating portion, including any balance ring.
For a front-loading, horizontal-axis clothes
washer, fill the clothes container to the
uppermost edge that is in contact with the
door seal. For all clothes washers, any
volume which cannot be occupied by the
clothing load during operation must be
excluded from the measurement. Measure
and record the weight of water, W, in
pounds.
3.1.5 The clothes container capacity is
calculated as follows:
C = W/d
Where:
C = Capacity in cubic feet (liters).
W = Mass of water in pounds (kilograms).
d = Density of water (62.0 lbs/ft3 for 100 °F
(993 kg/m3 for 37.8 °C) or 62.3 lbs/ft3 for
60 °F (998 kg/m3 for 15.6 °C)).
3.2 Procedure for measuring water and
energy consumption values on all automatic
and semi-automatic washers. All energy
consumption tests shall be performed under
the energy test cycle(s), unless otherwise
specified. Table 3.2 of this Appendix defines
the sections below which govern tests of
particular clothes washers, based on the
number of wash/rinse temperature selections
available on the model, and also, in some
instances, method of water heating. The
procedures prescribed are applicable
regardless of a clothes washer’s washing
capacity, loading port location, primary axis
of rotation of the clothes container, and type
of control system.
3.2.1 Inlet water temperature and the
wash/rinse temperature settings.
3.2.1.1 For automatic clothes washers, set
the wash/rinse temperature selection control
to obtain the wash water temperature
selection desired (extra hot, hot, warm, or
cold) and cold rinse, and open both the hot
and cold water faucets.
3.2.1.2 For semi-automatic washers:
(1) For hot water temperature, open the hot
water faucet completely and close the cold
water faucet;
(2) For warm inlet water temperature, open
both hot and cold water faucets completely;
(3) For cold water temperature, close the
hot water faucet and open the cold water
faucet completely.
3.2.1.3 Determination of warm wash
water temperature(s) to decide whether a
clothes washer has uniformly distributed
warm wash temperature selections. The wash
water temperature, Tw, of each warm water
wash selection shall be calculated or
measured.
(1) For non-water heating clothes washers,
calculate Tw as follows:
Tw( °F) = ((Hw × 135 °F)+ (Cw × 60 °F))/(Hw
+ Cw)
or
Tw( °C) = ((Hw × 57.2 °C)+ (Cw × 15.6 °C))/
(Hw + Cw)
Where:
Hw = Hot water consumption of a warm
wash.
Cw = Cold water consumption of a warm
wash.
(2) For water-heating clothes washers,
measure and record the temperature of each
warm wash selection after fill.
3.2.2 Total water consumption during the
energy test cycle shall be measured,
including hot and cold water consumption
during wash, deep rinse, and spray rinse.
3.2.3 Clothes washers with adaptive
water fill/manual water fill control systems.
3.2.3.1 Clothes washers with adaptive
water fill control system and alternate
manual water fill control systems. If a clothes
washer with an adaptive water fill control
system allows consumer selection of manual
controls as an alternative, then both manual
and adaptive modes shall be tested and, for
each mode, the energy consumption (HET,
MET, and DE) and water consumption (QT),
values shall be calculated as set forth in
section 4 of this Appendix. Then the average
of the two values (one from each mode,
adaptive and manual) for each variable shall
be used in section 4 of this Appendix for the
clothes washer.
3.2.3.2 Clothes washers with adaptive
water fill control system.
3.2.3.2.1 Not user adjustable. The
maximum, minimum, and average water
levels as defined in the following sections
shall be interpreted to mean that amount of
water fill which is selected by the control
system when the respective test loads are
used, as defined in Table 2.8 of this
Appendix. The load usage factors which
shall be used when calculating energy
consumption values are defined in Table
4.1.3 of this Appendix.
3.2.3.2.2 User adjustable. Four tests shall
be conducted on clothes washers with user
adjustable adaptive water fill controls which
affect the relative wash water levels. The first
test shall be conducted with the maximum
test load and with the adaptive water fill
control system set in the setting that will give
the most energy intensive result. The second
test shall be conducted with the minimum
test load and with the adaptive water fill
control system set in the setting that will give
the least energy intensive result. The third
test shall be conducted with the average test
load and with the adaptive water fill control
system set in the setting that will give the
most energy intensive result for the given test
load. The fourth test shall be conducted with
the average test load and with the adaptive
water fill control system set in the setting
that will give the least energy intensive result
for the given test load. The energy and water
consumption for the average test load and
water level shall be the average of the third
and fourth tests.
3.2.3.3 Clothes washers with manual
water fill control system. In accordance with
Table 2.8 of this Appendix, the water fill
selector shall be set to the maximum water
level available on the clothes washer for the
maximum test load size and set to the
minimum water level for the minimum test
load size. The load usage factors which shall
be used when calculating energy
consumption values are defined in Table
4.1.3 of this Appendix.
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TABLE 3.2—TEST SECTION REFERENCE
≤135 °F (57.2 °C)
Max. wash temp. available
>135 °F (57.2 °C)**
Number of wash temp. selections
1
2
>2
3
Test sections required to be followed ..........................................................................
................
................
................
3.6
................
3.4
................
3.6
................
3.4
3.5
3.6
3.3
................
3.5
3.6
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3.3
3.4
3.5
3.6
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13945
TABLE 3.2—TEST SECTION REFERENCE—Continued
≤135 °F (57.2 °C)
Max. wash temp. available
Number of wash temp. selections
1
2
................
3.8
................
3.8
>135 °F (57.2 °C)**
>2
* 3.7
3.8
3
>3
* 3.7
3.8
* 3.7
3.8
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* Only applicable to machines with warm rinse.
** Only applicable to water heating clothes washers on which the maximum wash temperature available exceeds 135 °F (57.2 °C).
3.3 ‘‘Extra Hot Wash’’ (Max Wash Temp
>135 °F (57.2 °C)) for water heating clothes
washers only. Water and electrical energy
consumption shall be measured for each
water fill level and/or test load size as
specified in sections 3.3.1 through 3.3.3 of
this Appendix for the hottest wash setting
available.
3.3.1 Maximum test load and water fill.
Hot water consumption (Hmx), cold water
consumption (Cmx), and electrical energy
consumption (Emx) shall be measured for an
extra hot wash/cold rinse energy test cycle,
with the controls set for the maximum water
fill level. The maximum test load size is to
be used and shall be determined per Table
5.1 of this Appendix.
3.3.2 Minimum test load and water fill.
Hot water consumption (Hmn), cold water
consumption (Cmn), and electrical energy
consumption (Emn) shall be measured for an
extra hot wash/cold rinse energy test cycle,
with the controls set for the minimum water
fill level. The minimum test load size is to
be used and shall be determined per Table
5.1 of this Appendix.
3.3.3 Average test load and water fill. For
clothes washers with an adaptive water fill
control system, measure the values for hot
water consumption (Hma), cold water
consumption (Cma), and electrical energy
consumption (Ema) for an extra hot wash/
cold rinse energy test cycle, with an average
test load size as determined per Table 5.1 of
this Appendix.
3.4 ‘‘Hot Wash’’ (Max Wash Temp
≤135 °F (57.2 °C)). Water and electrical
energy consumption shall be measured for
each water fill level and/or test load size as
specified in sections 3.4.1 through 3.4.3 of
this Appendix for a 135 °F (57.2 °C) wash, if
available, or for the hottest selection less than
135 °F (57.2 °C).
3.4.1 Maximum test load and water fill.
Hot water consumption (Hhx), cold water
consumption (Chx), and electrical energy
consumption (Ehx) shall be measured for a
hot wash/cold rinse energy test cycle, with
the controls set for the maximum water fill
level. The maximum test load size is to be
used and shall be determined per Table 5.1
of this Appendix.
3.4.2 Minimum test load and water fill.
Hot water consumption (Hhn), cold water
consumption (Chn), and electrical energy
consumption (Ehn) shall be measured for a
hot wash/cold rinse energy test cycle, with
the controls set for the minimum water fill
level. The minimum test load size is to be
used and shall be determined per Table 5.1
of this Appendix.
3.4.3 Average test load and water fill. For
clothes washers with an adaptive water fill
control system, measure the values for hot
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water consumption (Hha), cold water
consumption (Cha), and electrical energy
consumption (Eha) for a hot wash/cold rinse
energy test cycle, with an average test load
size as determined per Table 5.1 of this
Appendix.
3.5 ‘‘Warm Wash.’’ Water and electrical
energy consumption shall be determined for
each water fill level and/or test load size as
specified in sections 3.5.1 through 3.5.2.3 of
this Appendix for the applicable warm water
wash temperature(s) with a cold rinse.
3.5.1 Clothes washers with uniformly
distributed warm wash temperature
selection(s). The reportable values to be used
for the warm water wash setting shall be the
arithmetic average of the measurements for
the hot and cold wash selections. This is a
calculation only; no testing is required.
3.5.2 Clothes washers that lack uniformly
distributed warm wash temperature
selections. For a clothes washer with fewer
than four discrete warm wash selections, test
all warm wash temperature selections. For a
clothes washer that offers four or more warm
wash selections, test at all discrete selections,
or test at 25 percent, 50 percent, and 75
percent positions of the temperature
selection device between the hottest hot
(≤135 °F (57.2 °C)) wash and the coldest cold
wash. If a selection is not available at the 25,
50 or 75 percent position, in place of each
such unavailable selection use the next
warmer setting. Each reportable value to be
used for the warm water wash setting shall
be the arithmetic average of all tests
conducted pursuant to this section.
3.5.2.1 Maximum test load and water fill.
Hot water consumption (Hwx), cold water
consumption (Cwx), and electrical energy
consumption (Ewx) shall be measured with
the controls set for the maximum water fill
level. The maximum test load size is to be
used and shall be determined per Table 5.1
of this Appendix.
3.5.2.2 Minimum test load and water fill.
Hot water consumption (Hwn), cold water
consumption (Cwn), and electrical energy
consumption (Ewn) shall be measured with
the controls set for the minimum water fill
level. The minimum test load size is to be
used and shall be determined per Table 5.1
of this Appendix.
3.5.2.3 Average test load and water fill.
For clothes washers with an adaptive water
fill control system, measure the values for hot
water consumption (Hwa), cold water
consumption (Cwa), and electrical energy
consumption (Ewa) with an average test load
size as determined per Table 5.1 of this
Appendix.
3.6 ‘‘Cold Wash’’ (Minimum Wash
Temperature Selection). Water and electrical
energy consumption shall be measured for
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each water fill level and/or test load size as
specified in sections 3.6.1 through 3.6.3 of
this Appendix for the coldest wash
temperature selection available. For a clothes
washer that offers two or more wash
temperature settings labeled as cold, such as
‘‘Cold’’ and ‘‘Tap Cold’’, the setting with the
minimum wash temperature shall be
considered the cold wash. If any of the other
cold wash temperature settings add hot water
to raise the wash temperature above the cold
water supply temperature, as defined in
section 2.3 of this Appendix, those setting(s)
shall be considered warm wash setting(s), as
defined in section 1.34 of this Appendix. If
none of the cold wash temperature settings
add hot water for any of the water fill levels
or test load sizes required for the energy test
cycle, the wash temperature setting labeled
as ‘‘Cold’’ shall be considered the cold wash,
and the other wash temperature setting(s)
labeled as cold shall not be required for
testing.
3.6.1 Maximum test load and water fill.
Hot water consumption (Hcx), cold water
consumption (Ccx), and electrical energy
consumption (Ecx) shall be measured for a
cold wash/cold rinse energy test cycle, with
the controls set for the maximum water fill
level. The maximum test load size is to be
used and shall be determined per Table 5.1
of this Appendix.
3.6.2 Minimum test load and water fill.
Hot water consumption (Hcn), cold water
consumption (Ccn), and electrical energy
consumption (Ecn) shall be measured for a
cold wash/cold rinse energy test cycle, with
the controls set for the minimum water fill
level. The minimum test load size is to be
used and shall be determined per Table 5.1
of this Appendix.
3.6.3 Average test load and water fill. For
clothes washers with an adaptive water fill
control system, measure the values for hot
water consumption (Hca), cold water
consumption (Cca), and electrical energy
consumption (Eca) for a cold wash/cold rinse
energy test cycle, with an average test load
size as determined per Table 5.1 of this
Appendix.
3.7 ‘‘Warm Wash/Warm Rinse.’’ Water
and electrical energy consumption shall be
determined for each water fill level and/or
test load size as specified in sections 3.7.2.1
through 3.7.2.3 of this Appendix for the
applicable warm wash temperature selection
as described in section 3.7.1 or 3.7.2 of this
Appendix and the hottest available rinse
temperature selection.
3.7.1 Clothes washers with uniformly
distributed warm wash temperature
selection(s). Test the warm wash/warm rinse
cycle at the wash temperature selection with
the temperature selection device at the 50
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percent position between the hottest hot
(≤135 °F (57.2 °C)) wash and the coldest cold
wash.
3.7.2 Clothes washers that lack uniformly
distributed warm wash temperature
selections. For a clothes washer with fewer
than four discrete warm wash selections, test
all warm wash temperature selections for
which a warm rinse is available. For a clothes
washer that offers four or more warm wash
selections, test at all discrete selections for
which a warm rinse is available, or test at 25
percent, 50 percent, and 75 percent positions
of the temperature selection device between
the hottest hot (≤135 °F (57.2 °C)) wash and
the coldest cold wash. If a selection is not
available at the 25, 50, or 75 percent position,
in place of each such unavailable selection
use the next warmer setting. Each reportable
value to be used for the warm wash/warm
rinse setting shall be the arithmetic average
of all tests conducted pursuant to this
section.
3.7.2.1 Maximum test load and water fill.
Hot water consumption (Hwwx), cold water
consumption (Cwwx), and electrical energy
consumption (Ewwx) shall be measured with
the controls set for the maximum water fill
level. The maximum test load size is to be
used and shall be determined per Table 5.1
of this Appendix.
3.7.2.2 Minimum test load and water fill.
Hot water consumption (Hwwn), cold water
consumption (Cwwn), and electrical energy
consumption (Ewwn) shall be measured with
the controls set for the minimum water fill
level. The minimum test load size is to be
used and shall be determined per Table 5.1
of this Appendix.
3.7.2.3 Average test load and water fill.
For clothes washers with an adaptive water
fill control system, measure the values for hot
water consumption (Hwwa), cold water
consumption (Cwwa), and electrical energy
consumption (Ewwa) with an average test
load size as determined per Table 5.1 of this
Appendix.
3.8 Remaining Moisture Content:
3.8.1 The wash temperature will be the
same as the rinse temperature for all testing.
Use the maximum test load as defined in
Table 5.1 of this Appendix for testing.
3.8.2 For clothes washers with cold rinse
only:
3.8.2.1 Record the actual ‘‘bone dry’’
weight of the test load (WIx), then place the
test load in the clothes washer.
3.8.2.2 Set water level selector to
maximum fill.
3.8.2.3 Run the energy test cycle.
3.8.2.4 Record the weight of the test load
immediately after completion of the energy
test cycle (WCx).
3.8.2.5 Calculate the remaining moisture
content of the maximum test load, RMCx,
defined as:
RMCx = (WCx ¥ WIx)/WIx
3.8.2.6 Apply the RMC correction curve
described in section 2.6.7 of this Appendix
to calculate the corrected remaining moisture
content, RMCcorr, expressed as a percentage,
which shall be the final RMC used in section
4.3 of this Appendix:
RMCcorr = (A × RMCx + B) × 100%
Where:
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A and B are the coefficients of the RMC
correction curve as defined in section
2.6.6.1 of this Appendix.
RMCx = As defined in section 3.8.2.5 of this
Appendix.
3.8.3 For clothes washers with cold and
warm rinse options:
3.8.3.1 Complete sections 3.8.2.1 through
3.8.2.4 of this Appendix for cold rinse.
Calculate the remaining moisture content
of the maximum test load for cold rinse,
RMCCOLD, defined as:
RMCCOLD = (WCx ¥ WIx)/WIx
3.8.3.2 Apply the RMC correction curve
described in section 2.6.7 of this Appendix
to calculate the corrected remaining moisture
content for cold rinse, RMCCOLD,corr,
expressed as a percentage, as follows:
RMCCOLD,corr = (A × RMCCOLD + B) × 100%
Where:
A and B are the coefficients of the RMC
correction curve as defined in section
2.6.6.1 of this Appendix.
RMCCOLD = As defined in section 3.8.3.1 of
this Appendix.
3.8.3.3 Complete sections 3.8.2.1 through
3.8.2.4 of this Appendix for warm rinse.
Calculate the remaining moisture content of
the maximum test load for warm rinse,
RMCWARM, defined as:
RMCWARM = (WCx ¥ WIx)/WIx
3.8.3.4 Apply the RMC correction curve
described in section 2.6.7 of this Appendix
to calculate the corrected remaining moisture
content for warm rinse, RMCWARM,corr,
expressed as a percentage, as follows:
RMCWARM,corr = (A × RMCWARM + B) × 100%
Where:
A and B are the coefficients of the RMC
correction curve as defined in section
2.6.6.1 of this Appendix.
RMCWARM = As defined in section 3.8.3.3 of
this Appendix.
3.8.3.5 Calculate the corrected remaining
moisture content of the maximum test load,
RMCcorr, expressed as a percentage, which
shall be the final RMC used in section 4.3 of
this Appendix:
RMCcorr = RMCCOLD,corr × (1 – TUFww) +
RMCWARM,corr × (TUFww)
Where:
RMCCOLD,corr = As defined in section 3.8.3.2
of this Appendix.
RMCWARM,corr = As defined in section 3.8.3.4
of this Appendix.
TUFww is the temperature use factor for warm
rinse as defined in Table 4.1.1 of this
Appendix.
3.8.4 Clothes washers that have options
such as multiple selections of spin speeds or
spin times that result in different RMC values
and that are available in the energy test cycle,
shall be tested at the maximum and
minimum extremes of the available options,
excluding any ‘‘no spin’’ (zero spin speed)
settings, in accordance with requirements in
section 3.8.2 or 3.8.3 of this Appendix, as
applicable. The calculated RMCcorr,max extraction
and RMCcorr,min extraction at the maximum and
minimum settings, respectively, shall be
combined as follows and the final corrected
RMC to be used in section 4.3 of this
Appendix shall be:
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RMCcorr = 0.75 × RMCcorr,max extraction + 0.25 ×
RMCcorr,min extraction
Where:
RMCcorr,max extraction is the corrected remaining
moisture content using the maximum
spin setting, calculated according to
section 3.8.2 or 3.8.3 of this Appendix,
as applicable.
RMCcorr,min extraction is the corrected remaining
moisture content using the minimum
spin setting, calculated according to
section 3.8.2 or 3.8.3 of this Appendix,
as applicable.
3.9 Combined low-power mode power.
Connect the clothes washer to a watt meter
as specified in section 2.5.3 of this Appendix.
Establish the testing conditions set forth in
sections 2.1, 2.2 and 2.11 of this Appendix.
For clothes washers that take some time to
enter a stable state from a higher power state
as discussed in Section 5, Paragraph 5.1, note
1 of IEC 62301 (incorporated by reference;
see § 430.3), allow sufficient time for the
clothes washer to reach the lower power state
before proceeding with the test measurement.
Follow the test procedure for the sampling
method specified in Section 5, Paragraph
5.3.2 of IEC 62301 for testing in each possible
mode as described in sections 3.9.1 and 3.9.2
of this Appendix.
3.9.1 If a clothes washer has an inactive
mode as defined in section 1.15 of this
Appendix, measure and record the average
inactive mode power of the clothes washer,
Pia, in watts.
3.9.2 If a clothes washer has an off mode
as defined in section 1.24 of this Appendix,
measure and record its average off mode
power, Po, in watts.
4. Calculation of Derived Results From Test
Measurements
4.1 Hot water and machine electrical
energy consumption of clothes washers.
4.1.1 Per-cycle temperature-weighted hot
water consumption for maximum, average,
and minimum water fill levels using each
appropriate load size as defined in section
2.8 and Table 5.1 of this Appendix. Calculate
for the cycle under test the per-cycle
temperature-weighted hot water
consumption for the maximum water fill
level, Vhx, the average water fill level, Vha,
and the minimum water fill level, Vhn,
expressed in gallons per cycle (or liters per
cycle) and defined as:
(a) Vhx = [Hmx × TUFm] + [Hhx × TUFh] +
[Hwx × TUFw] + [Hwwx × TUFww] + [Hcx
× TUFc]
(b) Vha = [Hma × TUFm] + [Hha × TUFh] +
[Hwa × TUFw] + [Hwwa × TUFww] + [Hca
× TUFc]
(c) Vhn = [Hmn × TUFm] + [Hhn × TUFh] +
[Hwn × TUFw] + [Hwwn × TUFww] + [Hcn
× TUFc]
Where:
Hmx, Hma, and Hmn, are reported hot water
consumption values, in gallons per-cycle
(or liters per cycle), at maximum,
average, and minimum water fill,
respectively, for the extra hot wash cycle
with the appropriate test loads as
defined in section 2.8 of this Appendix.
Hhx, Hha, and Hhn, are reported hot water
consumption values, in gallons per-cycle
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Hwwx, Hwwa, and Hwwn, are reported hot
water consumption values, in gallons
per-cycle (or liters per cycle), at
maximum, average, and minimum water
fill, respectively, for the warm wash/
warm rinse cycle with the appropriate
test loads as defined in section 2.8 of this
Appendix.
Hcx, Hca, and Hcn, are reported hot water
consumption values, in gallons per-cycle
(or liters per cycle), at maximum,
average, and minimum water fill,
(or liters per cycle), at maximum,
average, and minimum water fill,
respectively, for the hot wash cycle with
the appropriate test loads as defined in
section 2.8 of this Appendix.
Hwx, Hwa, and Hwn, are reported hot water
consumption values, in gallons per-cycle
(or liters per cycle), at maximum,
average, and minimum water fill,
respectively, for the warm wash cycle
with the appropriate test loads as
defined in section 2.8 of this Appendix.
13947
respectively, for the cold wash cycle
with the appropriate test loads as
defined in section 2.8 of this Appendix.
TUFm, TUFh, TUFw, TUFww, and TUFc are
temperature use factors for extra hot
wash, hot wash, warm wash, warm
wash/warm rinse, and cold wash
temperature selections, respectively, and
are as defined in Table 4.1.1 of this
Appendix.
TABLE 4.1.1—TEMPERATURE USE FACTORS
≤135 °F (57.2 °C)
Max wash temp available
>135 °F (57.2 °C)
No. wash temp selections
Single
2 Temps
>2 Temps
3 Temps
>3 Temps
TUFm (extra hot) ......................................................................................
TUFh (hot) ................................................................................................
TUFww (warm/warm) ................................................................................
TUFw (warm) ............................................................................................
TUFc (cold) ...............................................................................................
....................
....................
....................
....................
1.00
....................
0.63
....................
....................
0.37
....................
0.14
* 0.27
** 0.22/0.49
0.37
0.14
....................
* 0.27
** 0.22/0.49
0.37
0.05
0.09
* 0.27
** 0.22/0.49
0.37
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* Only applicable to machines offering a warm/warm cycle. For machines with no warm/warm cycle, TUFww (warm/warm) should be zero.
** For machines offering a warm/warm cycle, TUFw (warm) should be 0.22. For machines with no warm/warm cycle, TUFw (warm) should be
0.49.
4.1.2 Total per-cycle hot water energy
consumption for all maximum, average, and
minimum water fill levels tested. Calculate
the total per-cycle hot water energy
consumption for the maximum water fill
level, HEmax, the minimum water fill level,
HEmin, and the average water fill level, HEavg,
expressed in kilowatt-hours per cycle and
defined as:
(a) HEmax = [Vhx × T × K]=Total energy when
a maximum load is tested.
(b) HEavg = [Vha × T× K]=Total energy when
an average load is tested.
(c) HEmin = [Vhn × T × K]=Total energy when
a minimum load is tested.
Where:
Vhx, Vha, and Vhn are as defined in section
4.1.1 of this Appendix.
T = Temperature rise = 75 °F (41.7 °C).
K = Water specific heat in kilowatt-hours per
gallon per degree F = 0.00240 kWh/gal°F (0.00114 kWh/L-°C).
4.1.3 Total weighted per-cycle hot water
energy consumption. Calculate the total
weighted per-cycle hot water energy
consumption, HET, expressed in kilowatthours per cycle and defined as:
HET = [HEmax × Fmax] + [HEavg × Favg] + HEmin
× Fmin]
Where:
HEmax, HEavg, and HEmin are as defined in
section 4.1.2 of this Appendix.
Fmax, Favg, and Fmin are the load usage factors
for the maximum, average, and
minimum test loads based on the size
and type of the control system on the
washer being tested. The values are as
shown in Table 4.1.3 of this Appendix.
TABLE 4.1.3—LOAD USAGE FACTORS
Water fill control
system
Fmax = ...............
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TABLE 4.1.3—LOAD USAGE
FACTORS—Continued
Water fill control
system
Manual
Favg = ................
Fmin = ................
....................
1 0.28
1 Reference
2 Reference
Adaptive
2 0.74
2 0.14
3.2.3.3.
3.2.3.2.
4.1.4 Total per-cycle hot water energy
consumption using gas-heated or oil-heated
water. Calculate for the energy test cycle the
per-cycle hot water consumption, HETG,
using gas-heated or oil-heated water,
expressed in Btu per cycle (or megajoules per
cycle) and defined as:
HETG = HET × 1/e × 3412 Btu/kWh or HETG
= HET × 1/e × 3.6 MJ/kWh
Where:
e = Nominal gas or oil water heater efficiency
= 0.75.
HET = As defined in section 4.1.3 of this
Appendix.
4.1.5 Per-cycle machine electrical energy
consumption for all maximum, average, and
minimum test load sizes. Calculate the total
per-cycle machine electrical energy
consumption for the maximum water fill
level, MEmax, the average water fill level,
MEavg, and the minimum water fill level,
MEmin, expressed in kilowatt-hours per cycle
and defined as:
(a) MEmax =[ [Emx× TUFm] + [Ehx × TUFh]+ +
[Ewx× TUFw]+ + [Ewwx× TUFww] + [Ecx×
TUFc]
(b) MEavg = [Ema × TUFm] + [Eha× TUFh] +
[Ewa× TUFw]+ + [Ewwa× TUFww]+ + [Eca×
TUFc]
(c) MEmin = [Emn× TUFm]+ + [Ehn× TUFh]+ +
[Ewn× TUFw]+ + [Ewwn× TUFww] + [Ecn×
TUFc]
Where:
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Emx, Ema, and Emn, are reported electrical
energy consumption values, in kilowatthours per cycle, at maximum, average,
and minimum test loads, respectively,
for the extra hot wash cycle.
Ehx, Eha, and Ehn, are reported electrical
energy consumption values, in kilowatthours per cycle, at maximum, average,
and minimum test loads, respectively,
for the hot wash cycle.
Ewx, Ewa, and Ewn, are reported electrical
energy consumption values, in kilowatthours per cycle, at maximum, average,
and minimum test loads, respectively,
for the warm wash cycle.
Ewwx, Ewwa, and Ewwn, are reported
electrical energy consumption values, in
kilowatt-hours per cycle, at maximum,
average, and minimum test loads,
respectively, for the warm wash/warm
rinse cycle.
Ecx, Eca, and Ecn, are reported electrical
energy consumption values, in kilowatthours per cycle, at maximum, average,
and minimum test loads, respectively,
for the cold wash cycle.
TUFm, TUFh, TUFw, TUFww, and TUFc are as
defined in Table 4.1.1 of this Appendix.
4.1.6 Total weighted per-cycle machine
electrical energy consumption. Calculate the
total weighted per-cycle machine electrical
energy consumption, MET, expressed in
kilowatt-hours per cycle and defined as:
MET = [MEmax × Fmax]+ + [MEavg× Favg]+ +
[MEmin× Fmin]
Where:
MEmax, MEavg, and MEmin are as defined in
section 4.1.5 of this Appendix.
Fmax, Favg, and Fmin are as defined in Table
4.1.3 of this Appendix.
4.1.7 Total per-cycle energy consumption
when electrically heated water is used.
Calculate for the energy test cycle the total
per-cycle energy consumption, ETE, using
electrically heated water, expressed in
kilowatt-hours per cycle and defined as:
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ETE = HET + MET
Where:
MET = As defined in section 4.1.6 of this
Appendix.
HET = As defined in section 4.1.3 of this
Appendix.
4.2 Water consumption of clothes
washers.
4.2.1 Per-cycle water consumption for
extra hot wash. Calculate the maximum,
average, and minimum total water
consumption, expressed in gallons per cycle
(or liters per cycle), for the extra hot wash
cycle and defined as:
Qmmax = [Hmx + Cmx]
Qmavg = [Hma + Cma]
Qmmin = [Hmn + Cmn]
Where:
Hmx, Cmx, Hma, Cma, Hmn, and Cmn are
defined in section 3.3 of this Appendix.
4.2.2 Per-cycle water consumption for hot
wash. Calculate the maximum, average, and
minimum total water consumption,
expressed in gallons per cycle (or liters per
cycle), for the hot wash cycle and defined as:
Qhmax = [Hhx + Chx]
Qhavg = [Hha + Cha]
Qhmin = [Hhn + Chn]
Where:
Hhx, Chx, Hha, Cha, Hhn, and Chn are defined
in section 3.4 of this Appendix.
4.2.3 Per-cycle water consumption for
warm wash with cold rinse. Calculate the
maximum, average, and minimum total water
consumption, expressed in gallons per cycle
(or liters per cycle), for the warm wash/cold
rinse cycle and defined as:
Qwmax = [Hwx + Cwx]
Qwavg = [Hwa + Cwa]
Qwmin = [Hwn + Cwn]
Where:
Hwx, Cwx, Hwa, Cwa, Hwn, and Cwn are
defined in section 3.5 of this Appendix.
4.2.4 Per-cycle water consumption for
warm wash with warm rinse. Calculate the
maximum, average, and minimum total water
consumption, expressed in gallons per cycle
(or liters per cycle), for the warm wash/warm
rinse cycle and defined as:
Qwwmax = [Hwwx + Cwwx]
Qwwavg = [Hwwa + Cwwa]
Qwwmin = [Hwwn + Cwwn]
Where:
Hwwx, Cwwx, Hwwa, Cwwa, Hwwn, and
Cwwn are defined in section 3.7 of this
Appendix.
4.2.5 Per-cycle water consumption for
cold wash. Calculate the maximum, average,
and minimum total water consumption,
expressed in gallons per cycle (or liters per
cycle), for the cold wash cycle and defined
as:
Qcmax = [Hcx + Ccx]
Qcavg = [Hca + Cca]
Qcmin = [Hcn + Ccn]
Where:
Hcx, Ccx, Hca, Cca, Hcn, and Ccn are defined
in section 3.6 of this Appendix.
4.2.6 Total weighted per-cycle water
consumption for extra hot wash. Calculate
the total weighted per-cycle water
consumption for the extra hot wash cycle,
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QmT, expressed in gallons per cycle (or liters
per cycle) and defined as:
QmT =[Qmmax × Fmax] + [Qmavg × Favg] +
[Qmmin × Fmin]
Where:
Qmmax, Qmavg, Qmmin are defined in section
4.2.1 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of
this Appendix.
4.2.7 Total weighted per-cycle water
consumption for hot wash. Calculate the total
weighted per-cycle water consumption for
the hot wash cycle, QhT, expressed in gallons
per cycle (or liters per cycle) and defined as:
QhT = [Qhmax × Fmax] + [Qhavg × Favg] + [Qhmin
× Fmin]
Where:
Qhmax, Qhavg, Qhmin are defined in section
4.2.2 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of
this Appendix.
4.2.8 Total weighted per-cycle water
consumption for warm wash with cold rinse.
Calculate the total weighted per-cycle water
consumption for the warm wash/cold rinse
cycle, QwT, expressed in gallons per cycle (or
liters per cycle) and defined as:
QwT = [Qwmax × Fmax] + [Qwavg × Favg] +
[Qwmin × Fmin]
Where:
Qwmax, Qwavg, Qwmin are defined in section
4.2.3 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of
this Appendix.
4.2.9 Total weighted per-cycle water
consumption for warm wash with warm
rinse. Calculate the total weighted per-cycle
water consumption for the warm wash/warm
rinse cycle, QwwT, expressed in gallons per
cycle (or liters per cycle) and defined as:
QwwT = [Qwwmax × Fmax] + [Qwwavg × Favg]
+ [Qwwmin × Fmin]
Where:
Qwwmax, Qwwavg, Qwwmin are defined in
section 4.2.4 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of
this Appendix.
4.2.10 Total weighted per-cycle water
consumption for cold wash. Calculate the
total weighted per-cycle water consumption
for the cold wash cycle, QcT, expressed in
gallons per cycle (or liters per cycle) and
defined as:
QcT = [Qcmax × Fmax] + [Qcavg × Favg] + [Qcmin
× Fmin]
Where:
Qcmax, Qcavg, Qcmin are defined in section
4.2.5 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of
this Appendix.
4.2.11 Total weighted per-cycle water
consumption for all wash cycles. Calculate
the total weighted per-cycle water
consumption for all wash cycles, QT,
expressed in gallons per cycle (or liters per
cycle) and defined as:
QT = [QmT × TUFm] + [QhT × TUFh] + [QwT
× TUFw] + [QwwT × TUFww] + [QcT ×
TUFc]
Where:
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QmT, QhT, QwT, QwwT, and QcT are defined
in sections 4.2.6 through 4.2.10 of this
Appendix.
TUFm, TUFh, TUFw, TUFww, and TUFc are
defined in Table 4.1.1 of this Appendix.
4.2.12 Water factor. Calculate the water
factor, WF, expressed in gallons per cycle per
cubic foot (or liters per cycle per liter), as:
WF = QcT/C
Where:
QcT = As defined in section 4.2.10 of this
Appendix.
C = As defined in section 3.1.5 of this
Appendix.
4.2.13 Integrated water factor. Calculate
the integrated water factor, IWF, expressed in
gallons per cycle per cubic foot (or liter per
cycle per liter), as:
IWF = QT/C
Where:
QT = As defined in section 4.2.11 of this
Appendix.
C = As defined in section 3.1.5 of this
Appendix.
4.3 Per-cycle energy consumption for
removal of moisture from test load. Calculate
the per-cycle energy required to remove the
remaining moisture of the test load, DE,
expressed in kilowatt-hours per cycle and
defined as:
DE = [(Fmax × Maximum test load weight) +
(Favg × Average test load weight) + (Fmin
× Minimum test load weight)]×
(RMCcorr¥4%) × (DEF) × (DUF)
Where:
Fmax, Favg, and Fmin are as defined in Table
4.1.3 of this Appendix.
Maximum, average, and minimum test load
weights are as defined in Table 5.1 of
this Appendix.
RMCcorr = As defined in section 3.8.2.6,
3.8.3.5, or 3.8.4 of this Appendix.
DEF = Nominal energy required for a clothes
dryer to remove moisture from clothes =
0.5 kWh/lb (1.1 kWh/kg).
DUF = Dryer usage factor, percentage of
washer loads dried in a clothes dryer =
0.91.
4.4 Per-cycle combined low-power mode
energy consumption. Calculate the per-cycle
combined low-power mode energy
consumption, ETLP, expressed in kilowatthours per cycle and defined as:
ETLP = [(Pia × Sia) + (Po × So)] × Kp/295.
Where:
Pia = Washer inactive mode power, in watts,
as defined in section 3.9.1 of this
Appendix for clothes washers capable of
operating in inactive mode; otherwise,
Pia = 0.
Po = Washer off mode power, in watts, as
defined in section 3.9.2 of this Appendix
for clothes washers capable of operating
in off mode; otherwise, Po=0.
Sia = Annual hours in inactive mode as
defined as Soi if no off mode is possible,
[Soi/2] if both inactive mode and off
mode are possible, and 0 if no inactive
mode is possible.
So = Annual hours in off mode as defined as
Soi if no inactive mode is possible, [Soi/
2] if both inactive mode and off mode are
possible, and 0 if no off mode is possible.
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Soi = Combined annual hours for off and
inactive mode = 8,465.
Kp = Conversion factor of watt-hours to
kilowatt-hours = 0.001.
295 = Representative average number of
clothes washer cycles in a year.
4.5 Modified energy factor. Calculate the
modified energy factor, MEF, expressed in
cubic feet per kilowatt-hour per cycle (or
liters per kilowatt-hour per cycle) and
defined as:
MEF = C/(ETE + DE)
Where:
C = As defined in section 3.1.5 of this
Appendix.
ETE = As defined in section 4.1.7 of this
Appendix.
DE = As defined in section 4.3 of this
Appendix.
4.6 Integrated modified energy factor.
Calculate the integrated modified energy
factor, IMEF, expressed in cubic feet per
kilowatt-hour per cycle (or liters per
kilowatt-hour per cycle) and defined as:
13949
IMEF = C/(ETE + DE + ETLP)
Where:
C = As defined in section 3.1.5 of this
Appendix.
ETE = As defined in section 4.1.7 of this
Appendix.
DE = As defined in section 4.3 of this
Appendix.
ETLP = As defined in section 4.4 of this
Appendix.
5. Test Loads
TABLE 5.1—TEST LOAD SIZES
Container volume
Minimum load
tkelley on DSK3SPTVN1PROD with RULES2
cu. ft.
≥ <
liter
≥ <
0–0.80 ...............................
0.80–0.90 ..........................
0.90–1.00 ..........................
1.00–1.10 ..........................
1.10–1.20 ..........................
1.20–1.30 ..........................
1.30–1.40 ..........................
1.40–1.50 ..........................
1.50–1.60 ..........................
1.60–1.70 ..........................
1.70–1.80 ..........................
1.80–1.90 ..........................
1.90–2.00 ..........................
2.00–2.10 ..........................
2.10–2.20 ..........................
2.20–2.30 ..........................
2.30–2.40 ..........................
2.40–2.50 ..........................
2.50–2.60 ..........................
2.60–2.70 ..........................
2.70–2.80 ..........................
2.80–2.90 ..........................
2.90–3.00 ..........................
3.00–3.10 ..........................
3.10–3.20 ..........................
3.20–3.30 ..........................
3.30–3.40 ..........................
3.40–3.50 ..........................
3.50–3.60 ..........................
3.60–3.70 ..........................
3.70–3.80 ..........................
3.80–3.90 ..........................
3.90–4.00 ..........................
4.00–4.10 ..........................
4.10–4.20 ..........................
4.20–4.30 ..........................
4.30–4.40 ..........................
4.40–4.50 ..........................
4.50–4.60 ..........................
4.60–4.70 ..........................
4.70–4.80 ..........................
4.80–4.90 ..........................
4.90–5.00 ..........................
5.00–5.10 ..........................
5.10–5.20 ..........................
5.20–5.30 ..........................
5.30–5.40 ..........................
5.40–5.50 ..........................
5.50–5.60 ..........................
5.60–5.70 ..........................
5.70–5.80 ..........................
5.80–5.90 ..........................
5.90–6.00 ..........................
0–22.7 ...............................
22.7–25.5 ..........................
25.5–28.3 ..........................
28.3–31.1 ..........................
31.1–34.0 ..........................
34.0–36.8 ..........................
36.8–39.6 ..........................
39.6–42.5 ..........................
42.5–45.3 ..........................
45.3–48.1 ..........................
48.1–51.0 ..........................
51.0–53.8 ..........................
53.8–56.6 ..........................
56.6–59.5 ..........................
59.5–62.3 ..........................
62.3–65.1 ..........................
65.1–68.0 ..........................
68.0–70.8 ..........................
70.8–73.6 ..........................
73.6–76.5 ..........................
76.5–79.3 ..........................
79.3–82.1 ..........................
82.1–85.0 ..........................
85.0–87.8 ..........................
87.8–90.6 ..........................
90.6–93.4 ..........................
93.4–96.3 ..........................
96.3–99.1 ..........................
99.1–101.9 ........................
101.9–104.8 ......................
104.8–107.6 ......................
107.6–110.4 ......................
110.4–113.3 ......................
113.3–116.1 ......................
116.1–118.9 ......................
118.9–121.8 ......................
121.8–124.6 ......................
124.6–127.4 ......................
127.4–130.3 ......................
130.3–133.1 ......................
133.1–135.9 ......................
135.9–138.8 ......................
138.8–141.6 ......................
141.6–144.4 ......................
144.4–147.2 ......................
147.2–150.1 ......................
150.1–152.9 ......................
152.9–155.7 ......................
155.7–158.6 ......................
158.6–161.4 ......................
161.4–164.2 ......................
164.2–167.1 ......................
167.1–169.9 ......................
lb
Maximum load
kg
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
lb
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
3.00
3.50
3.90
4.30
4.70
5.10
5.50
5.90
6.40
6.80
7.20
7.60
8.00
8.40
8.80
9.20
9.60
10.00
10.50
10.90
11.30
11.70
12.10
12.50
12.90
13.30
13.70
14.10
14.60
15.00
15.40
15.80
16.20
16.60
17.00
17.40
17.80
18.20
18.70
19.10
19.50
19.90
20.30
20.70
21.10
21.50
21.90
22.30
22.80
23.20
23.60
24.00
24.40
Average load
kg
1.36
1.59
1.77
1.95
2.13
2.31
2.49
2.68
2.90
3.08
3.27
3.45
3.63
3.81
3.99
4.17
4.35
4.54
4.76
4.94
5.13
5.31
5.49
5.67
5.85
6.03
6.21
6.40
6.62
6.80
6.99
7.16
7.34
7.53
7.72
7.90
8.09
8.27
8.46
8.65
8.83
9.02
9.20
9.39
9.58
9.76
9.95
10.13
10.32
10.51
10.69
10.88
11.06
Notes: (1) All test load weights are bone dry weights.
(2) Allowable tolerance on the test load weights are ±0.10 lbs (0.05 kg).
VerDate Mar<15>2010
19:45 Mar 06, 2012
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Fmt 4701
Sfmt 4700
E:\FR\FM\07MRR2.SGM
07MRR2
lb
3.00
3.25
3.45
3.65
3.85
4.05
4.25
4.45
4.70
4.90
5.10
5.30
5.50
5.70
5.90
6.10
6.30
6.50
6.75
6.95
7.15
7.35
7.55
7.75
7.95
8.15
8.35
8.55
8.80
9.00
9.20
9.40
9.60
9.80
10.00
10.20
10.40
10.60
10.85
11.05
11.25
11.45
11.65
11.85
12.05
12.25
12.45
12.65
12.90
13.10
13.30
13.50
13.70
kg
1.36
1.47
1.56
1.66
1.75
1.84
1.93
2.02
2.13
2.22
2.31
2.40
2.49
2.59
2.68
2.77
2.86
2.95
3.06
3.15
3.24
3.33
3.42
3.52
3.61
3.70
3.79
3.88
3.99
4.08
4.17
4.26
4.35
4.45
4.54
4.63
4.72
4.82
4.91
5.00
5.10
5.19
5.28
5.38
5.47
5.56
5.65
5.75
5.84
5.93
6.03
6.12
6.21
13950
Federal Register / Vol. 77, No. 45 / Wednesday, March 7, 2012 / Rules and Regulations
tkelley on DSK3SPTVN1PROD with RULES2
6. Waivers and Field Testing
6.1 Waivers and Field Testing for
Nonconventional Clothes Washers.
Manufacturers of nonconventional clothes
washers, such as clothes washers with
adaptive control systems, must submit a
petition for waiver pursuant to 10 CFR
430.27 to establish an acceptable test
procedure for that clothes washer if the
washer cannot be tested pursuant to the DOE
test procedure or the DOE test procedure
yields results that are so unrepresentative of
the clothes washer’s true energy
consumption characteristics as to provide
materially inaccurate comparative data. In
such cases, field testing may be appropriate
for establishing an acceptable test procedure.
The following are guidelines for field testing
which may be used by manufacturers in
support of petitions for waiver. These
guidelines are not mandatory and the
Department may determine that they do not
apply to a particular model. Depending upon
a manufacturer’s approach for conducting
field testing, additional data may be required.
Manufacturers are encouraged to
communicate with the Department prior to
the commencement of field tests which may
be used to support a petition for waiver.
Section 6.3 of this Appendix provides an
example of field testing for a clothes washer
with an adaptive water fill control system.
Other features, such as the use of various
spin speed selections, could be the subject of
field tests.
6.2 Nonconventional Wash System
Energy Consumption Test. The field test may
consist of a minimum of 10 of the
nonconventional clothes washers (‘‘test
clothes washers’’) and 10 clothes washers
already being distributed in commerce (‘‘base
clothes washers’’). The tests should include
a minimum of 50 energy test cycles per
clothes washer. The test clothes washers and
base clothes washers should be identical in
construction except for the controls or
VerDate Mar<15>2010
19:45 Mar 06, 2012
Jkt 226001
systems being tested. Equal numbers of both
the test clothes washer and the base clothes
washer should be tested simultaneously in
comparable settings to minimize seasonal or
consumer laundering conditions or
variations. The clothes washers should be
monitored in such a way as to accurately
record the average total energy and water
consumption per cycle, including water
heating energy when electrically heated
water is used, and the energy required to
remove the remaining moisture of the test
load. Standby and off mode energy
consumption should be measured according
to section 4.4 of this test procedure. The field
test results should be used to determine the
best method to correlate the rating of the test
clothes washer to the rating of the base
clothes washer.
6.3 Adaptive water fill control system
field test. (1) Section 3.2.3.1 of this Appendix
defines the test method for measuring energy
consumption for clothes washers which
incorporate both adaptive and alternate
manual water fill control systems. Energy
consumption calculated by the method
defined in section 3.2.3.1 of this Appendix
assumes the adaptive cycle will be used 50
percent of the time. This section can be used
to develop field test data in support of a
petition for waiver when it is believed that
the adaptive cycle will be used more than 50
percent of the time. The field test sample size
should be a minimum of 10 test clothes
washers. The test clothes washers should be
representative of the design, construction,
and control system that will be placed in
commerce. The duration of field testing in
the user’s house should be a minimum of 50
energy test cycles, for each unit. No special
instructions as to cycle selection or product
usage should be given to the field test
participants, other than inclusion of the
product literature pack which would be
shipped with all units, and instructions
regarding filling out data collection forms,
PO 00000
Frm 00064
Fmt 4701
Sfmt 9990
use of data collection equipment, or basic
procedural methods. Prior to the test clothes
washers being installed in the field test
locations, baseline data should be developed
for all field test units by conducting
laboratory tests as defined by section 1
through section 5 of this Appendix to
determine the energy consumption, water
consumption, and remaining moisture
content values. The following data should be
measured and recorded for each wash load
during the test period: Wash cycle selected,
the mode of the clothes washer (adaptive or
manual), clothes load dry weight (measured
after the clothes washer and clothes dryer
cycles are completed) in pounds, and type of
articles in the clothes load (e.g., cottons,
linens, permanent press). The wash loads
used in calculating the in-home percentage
split between adaptive and manual cycle
usage should be only those wash loads which
conform to the definition of the energy test
cycle.
Calculate:
T=The total number of energy test cycles run
during the field test.
Ta=The total number of adaptive control
energy test cycles.
Tm=The total number of manual control
energy test cycles.
The percentage weighting factors:
Pa=(Ta/T) × 100% (the percentage weighting
for adaptive control selection)
Pm=(Tm/T) × 100% (the percentage weighting
for manual control selection)
(2) Energy consumption (HET, MET, and
DE) and water consumption (QT), values
calculated in section 4 of this Appendix for
the manual and adaptive modes, should be
combined using Pa and Pm as the weighting
factors.
[FR Doc. 2012–4819 Filed 3–6–12; 8:45 a.m.]
BILLING CODE 6450–01–P
E:\FR\FM\07MRR2.SGM
07MRR2
Agencies
[Federal Register Volume 77, Number 45 (Wednesday, March 7, 2012)]
[Rules and Regulations]
[Pages 13888-13950]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-4819]
[[Page 13887]]
Vol. 77
Wednesday,
No. 45
March 7, 2012
Part IV
Department of Energy
-----------------------------------------------------------------------
10 CFR Parts 429 and 430
Energy Conservation Program: Test Procedures for Residential Clothes
Washers; Final Rule
Federal Register / Vol. 77 , No. 45 / Wednesday, March 7, 2012 /
Rules and Regulations
[[Page 13888]]
-----------------------------------------------------------------------
DEPARTMENT OF ENERGY
10 CFR Parts 429 and 430
[Docket No. EERE-2010-BT-TP-0021]
RIN 1904-AC08
Energy Conservation Program: Test Procedures for Residential
Clothes Washers
AGENCY: Office of Energy Efficiency and Renewable Energy, Department of
Energy.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The U.S. Department of Energy (DOE) establishes new test
procedures for residential clothes washers under the Energy Policy and
Conservation Act. The new test procedures include provisions for
measuring standby mode and off mode energy consumption, and update the
provisions for measuring active mode energy and water consumption. This
final rule also amends the certification, compliance, and enforcement
requirements for residential clothes washers, amends provisions for
calculating the estimated annual operating cost for clothes washers,
eliminates an obsolete clothes washer test procedure, and amends
certain provisions in the currently applicable test procedure.
DATES: This final rule is effective April 6, 2012. Manufacturers will
be required to certify compliance using the appendix J2 test procedure
beginning on the compliance date of any final rule establishing amended
energy conservation standards that address standby and off mode power
for residential clothes washers. Before that time, manufacturers may
continue to certify compliance using the test procedure at appendix J1.
The incorporation by reference of certain publications listed in
this rulemaking is approved by the Director of the Office of the
Federal Register as of April 6, 2012.
ADDRESSES: The docket is available for review at https://www.regulations.gov, including Federal Register notices, framework
documents, public meeting attendee lists and transcripts, comments, and
other supporting documents/materials. All documents in the docket are
listed in the regulations.gov index. However, not all documents listed
in the index may be publicly available, such as information that is
exempt from public disclosure. A link to the docket Web page can be
found at: www.regulations.gov/#!docketDetail;D=EERE-2010-BT-TP-0021.
The regulations.gov Web page contains instructions on how to access all
documents, including public comments, in the docket.
For further information on how to review the docket, contact Ms.
Brenda Edwards at (202) 586-2945 or by email:
Brenda.Edwards@ee.doe.gov.
FOR FURTHER INFORMATION CONTACT:
Mr. Stephen L. Witkowski, U.S. Department of Energy, Office of Energy
Efficiency and Renewable Energy, Building Technologies Program, EE-2J,
1000 Independence Avenue SW., Washington, DC 20585-0121. Telephone:
(202) 586-7463. Email: Stephen.Witkowski@ee.doe.gov.
Ms. Elizabeth Kohl, U.S. Department of Energy, Office of the General
Counsel, GC-71, 1000 Independence Avenue SW., Washington, DC 20585-
0121. Telephone: (202) 586-7796. Email: Elizabeth.Kohl@hq.doe.gov.
SUPPLEMENTARY INFORMATION: This final rule incorporates by reference
into part 430 the following industry test standards:
(1) AATCC Test Method 79-2010, Absorbency of Textiles, Revised
2010.
(2) AATCC Test Method 118-2007, Oil Repellency: Hydrocarbon
Resistance Test, Revised 2007.
(3) AATCC Test Method 135-2010, Dimensional Changes of Fabrics
After Home Laundering, Revised 2010.
(4) IEC Standard 62301, Household Electrical Appliances--
Measurement of Standby Power, Edition 2.0, 2011-01.
Copies of AATCC standards can be obtained from the American
Association of Textile Chemists and Colorists, P.O. Box 12215, Research
Triangle Park, NC 27709, (919) 549-3526, or www.aatcc.org.
Copies of IEC standards can be obtained from the American National
Standards Institute, 25 W. 43rd Street, 4th Floor, New York, NY 10036,
(212) 642-4900, or https://webstore.ansi.org/.
Table of Contents
I. Authority and Background
A. General Test Procedure Rulemaking Process
B. DOE Test Procedure at Appendix J1
C. Clothes Washer Test Procedure Updates: Authority and
Regulatory Background
II. Summary of the Final Rule
A. Standby and Off Mode
B. Water Consumption
C. Updated Consumer Usage Patterns
D. Energy Test Cycle Definition
E. Capacity Measurement Method
F. Test Cloth, Detergent, and Preconditioning Test Equipment
G. Testing Conditions
H. Clarifications and Corrections
I. Annual Operating Cost Calculation
J. Revisions to Appendix J1
K. Removal of Appendix J
L. Certification, Compliance, and Enforcement Requirements
III. Discussion
A. Products Covered by This Test Procedure Final Rule
B. Standby Mode and Off Mode Test Procedure Provisions
1. Version of IEC Standard 62301
2. Determination of Modes To Be Incorporated
a. Active Mode
b. Delay Start Mode
c. Cycle Finished Mode
d. Self-Clean Mode
e. Standby Mode
f. Off Mode
g. Network Mode
h. Disconnected Mode
3. Power Stabilization Criteria and Measurement Methods
a. Stable, Non-Cyclic Power
b. Unstable (Varying), Non-Cyclic Power
c. Cyclic Power
4. Use of Default Settings
5. Test Room Ambient Temperature Conditions for Standby Power
Testing
6. Power Supply and Power Measuring Instruments
7. Calculation of Energy Consumption in Each Mode
8. Integrated Modified Energy Factor (IMEF)
C. Active Mode Test Procedure Provisions
1. Integrated Water Consumption Factor (IWF)
2. Technologies Not Covered by the Current Test Procedure
a. Steam Wash Cycles
b. Self-Clean Cycles
c. Adaptive Control Technologies
d. Demand Response Technologies
3. Consumer Usage Patterns
a. Number of Annual Wash Cycles
b. Test Load Size Specifications
c. Load Usage Factors
d. Temperature Use Factors
e. Dryer Usage Factor
f. Load Adjustment Factor
4. Energy Test Cycle Definition
a. Part (A) of the Proposed Definition
b. Part (B) of the Proposed Definition
c. Part (C) of the Proposed Definition
d. Part (D) and Part (E) of the Proposed Definition
e. New Section 2.13
f. Reporting Requirements
5. Capacity Measurement Method
6. Test Cloth, Detergent, and Preconditioning Test Equipment
a. Test Cloth Definitions
b. Energy Test Cloth Size and Weight Tolerances
c. Detergent Specification and Dosage
d. Test Cloth Preconditioning Wash Requirements
e. AATCC Test Methods
f. Required Extractor Tests
g. Extractor Specification
h. Bone Dryer Specifications
i. Procedures for Preparing and Handling Test Cloth Bundles
j. Clarification of the RMC Nomenclature and Application of the
RMC Correction Curve
k. Removal of Redundant Sections
7. Testing Conditions
[[Page 13889]]
a. Water Supply Pressure
b. Water Inlet and Drain Hoses
8. Clarifications and Corrections
a. Correction of Cold Rinse Definition
b. Clarification of Wash Time Setting for Electromechanical
Dials
c. Clarification of Cold Wash Definition
d. Removal of Obsolete Note in Water Factor Calculation Section
e. Correction of Typographical Error in Hot Water Consumption
Calculation
f. Removal of Energy Factor Calculation
g. Clarification of Waiver Field Test Equation
h. Clarification of Water Factor Terminology
9. Test Procedure Performance Specifications
D. Annual Operating Cost Calculation
E. Revisions to Appendix J1
1. Revision of Introductory Text
2. Correction of Typographical Errors in Materials Incorporated
by Reference
3. Correction of Cold Rinse Definition
4. Removal of Redundant Sections
5. Detergent Specification and Dosage
6. Wash Time Setting for Electromechanical Dials
7. Clarification of Cold Wash Definition
8. Removal of Obsolete Note in Water Factor Calculation Section
9. Clarification of Water Factor Terminology
10. Correction of Typographical Error in Hot Water Consumption
Calculation
11. Extension of Test Load Size Table
12. Clarification of Waiver Field Test Equation
13. Corrections to Provisions for Calculating the RMC Correction
Curve
F. Removal of Obsolete Test Procedure at Appendix J
G. Compliance With Other EPCA Requirements
1. Test Burden
2. Integration of Standby Mode and Off Mode Energy Consumption
Into the Energy Efficiency Metrics
3. Impacts on Commercial Clothes Washers
4. Certification, Compliance, and Enforcement Requirements
H. Impacts of the Test Procedure Amendments on EnergyGuide and
ENERGYSTAR
IV. Procedural Issues and Regulatory Review
A. Review Under Executive Order 12866
B. Review Under the Regulatory Flexibility Act
C. Review Under the Paperwork Reduction Act of 1995
D. Review Under the National Environmental Policy Act of 1969
E. Review Under Executive Order 13132
F. Review Under Executive Order 12988
G. Review Under the Unfunded Mandates Reform Act of 1995
H. Review Under the Treasury and General Government
Appropriations Act, 1999
I. Review Under Executive Order 12630
J. Review Under Treasury and General Government Appropriations
Act, 2001
K. Review Under Executive Order 13211
L. Review Under Section 32 of the Federal Energy Administration
Act of 1974
M. Congressional Notification
N. Approval of the Office of the Secretary
I. Authority and Background
Title III of the Energy Policy and Conservation Act (42 U.S.C.
6291, et seq.; ``EPCA'') sets forth a variety of provisions designed to
improve energy efficiency. (All references to EPCA refer to the statute
as amended through the Energy Independence and Security Act of 2007
(EISA 2007), Public Law 110-140 (Dec. 19, 2007)). Part B of title III,
which for editorial reasons was redesignated as Part A upon
incorporation into the U.S. Code (42 U.S.C. 6291-6309), establishes the
``Energy Conservation Program for Consumer Products Other Than
Automobiles.'' These include residential clothes washers, the subject
of this final rule. (42 U.S.C. 6292(a)(7))
Under EPCA, this program consists essentially of four parts: (1)
Testing, (2) labeling, (3) Federal energy conservation standards, and
(4) certification and enforcement procedures. The testing requirements
consist of test procedures that manufacturers of covered products must
use as the basis for certifying to DOE that their products comply with
the applicable energy conservation standards adopted under EPCA, and
for making representations about the efficiency of those products.
Similarly, DOE must use these test requirements to determine whether
the products comply with any relevant standards promulgated under EPCA.
A. General Test Procedure Rulemaking Process
Under 42 U.S.C. 6293, EPCA sets forth the criteria and procedures
DOE must follow when prescribing or amending test procedures for
covered products. EPCA provides that any test procedures prescribed or
amended under this section shall be reasonably designed to produce test
results which measure energy efficiency, energy use or estimated annual
operating cost of a covered product during a representative average use
cycle or period of use and shall not be unduly burdensome to conduct.
(42 U.S.C. 6293(b)(3)) If DOE determines that a test procedure
amendment is warranted, it must publish proposed test procedures and
offer the public an opportunity to present oral and written comments on
them. (42 U.S.C. 6293(b)(2))
DOE is codifying these changes to the clothes washer test procedure
as a new appendix J2 in 10 CFR part 430 subpart B. Manufacturers will
not be required to use appendix J2 to demonstrate compliance with
clothes washer energy conservation standards until the compliance date
of amended energy conservation standards that consider the methods and
measurements included in the new test procedure. Until that time,
manufacturers may continue to use appendix J1.
EPCA requires DOE to review its test procedures at least once every
seven years to determine whether amendments are warranted. (42 U.S.C.
6293(b)(1)) This rulemaking satisfies EPCA's periodic review
requirement. Table I.1 provides a summary of prior key regulatory and
legislative actions regarding the residential clothes washer test
procedure and energy conservation standards, which are relevant to this
final rule. The first column contains the abbreviated names used in
this preamble to refer to each action.
Table I.1--Summary of Relevant Regulatory and Legislative Actions for Residential Clothes Washers
----------------------------------------------------------------------------------------------------------------
Name Action Citation and date Summary of action
----------------------------------------------------------------------------------------------------------------
TEST PROCEDURES
----------------------------------------------------------------------------------------------------------------
August 1997 Final Rule............. Final Rule............ 62 FR 45484 (August Established new test
27, 1997). procedure at appendix J1.
September 2010 NOPR................ Notice of Proposed 75 FR 57556 (September Proposed new appendix J2 to
Rulemaking. 21, 2010). incorporate standby and
off mode and to amend
certain active mode
provisions; proposed
changes to appendix J1;
proposed removal of
appendix J.
October 2010 public meeting........ Public meeting........ October 28, 2010...... Public meeting to discuss
proposed test procedure
amendments.
August 2011 SNOPR.................. Supplementary Notice 76 FR 49238 (August 9, Proposed revisions to new
of Proposed 2011). appendix J2 to incorporate
Rulemaking. provisions of IEC Standard
62301 (2nd Ed.); proposed
minor amendments to
appendix J1.
[[Page 13890]]
November 2011 SNOPR................ Supplementary Notice 76 FR 69870 (November Proposed amended definition
of Proposed 9, 2011). of the energy test cycle
Rulemaking. for the proposed new
appendix J2.
----------------------------------------------------------------------------------------------------------------
ENERGY CONSERVATION STANDARDS
----------------------------------------------------------------------------------------------------------------
January 2001 standards Final Rule.. Final Rule............ 66 FR 3314 (January Required use of appendix J1
12, 2001). to demonstrate compliance
with amended energy
conservation standards as
of January 1, 2004;
amended test procedure
provisions related to
remaining moisture content
and test cloth.
August 2009 standards framework Framework document.... 74 FR 44306 (August Developed to consider
document. 28, 2009). amended energy
conservation standards.
September 2009 standards public Public meeting........ September 21, 2009.... Public meeting to discuss
meeting. energy conservation
standards rulemaking;
included test procedure
issues.
----------------------------------------------------------------------------------------------------------------
LEGISLATION
----------------------------------------------------------------------------------------------------------------
EPCA............................... Legislation........... Energy Policy and Established authority for
Conservation Act, energy conservation
Pub. L. 94-163. standards and test
procedures.
EISA 2007.......................... Legislation........... Energy Independence Required standby and off
and Security Act of mode energy to be
2007, Pub. L. 110-140. integrated into overall
energy descriptors for
residential clothes
washers, if technically
feasible.
----------------------------------------------------------------------------------------------------------------
B. DOE Test Procedure at Appendix J1
The DOE test procedure for clothes washers currently being
manufactured is found at 10 CFR part 430, subpart B, appendix J1, which
was adopted by DOE in the August 1997 Final Rule. DOE added the new
appendix J1 so that appendix J could still be used until DOE amended
the residential clothes washer conservation standards \1\, which DOE
published in the January 2001 standards Final Rule. Until the
compliance date of any amended standards for residential clothes
washers, manufacturers may continue to use the appendix J1 test
procedure to demonstrate compliance with current energy conservation
standards.
---------------------------------------------------------------------------
\1\ Because appendix J applies only to clothes washers
manufactured before January 1, 2004, appendix J is now obsolete.
---------------------------------------------------------------------------
The test procedure at appendix J1 includes provisions for
determining the modified energy factor (MEF) and water factor (WF). The
test procedure at appendix J1 does not address energy use in standby or
off modes.
C. Clothes Washer Test Procedure Updates: Authority and Regulatory
Background
EISA 2007 amended EPCA to require DOE to amend its test procedures
for all covered products to integrate measures of standby mode and off
mode energy consumption into the overall energy efficiency, energy
consumption, or other energy descriptor, unless the current test
procedure already incorporates standby and off mode energy consumption,
or if such integration is technically infeasible. If an integrated test
procedure is technically infeasible, DOE must prescribe a separate
standby mode and off mode energy use test procedure for the covered
product, if a separate test is technically feasible. (42 U.S.C.
6295(gg)(2)(A)) Any such amendment must consider the most current
versions of International Electrotechnical Commission (IEC) Standard
62301, ``Household electrical appliances--Measurement of standby
power'' (``IEC Standard 62301 (Second Edition)'' or ``Second Edition'')
and IEC Standard 62087, ``Methods of measurement for the power
consumption of audio, video, and related equipment.'' \2\ Amendments to
test procedures to include standby and off mode energy consumption are
not used to determine compliance with previously-established standards.
(42 U.S.C. 6295(gg)(2)(C))
---------------------------------------------------------------------------
\2\ IEC standards are available online at www.iec.ch.
---------------------------------------------------------------------------
DOE is considering amending standards for clothes washers in a
separate rulemaking, including amendments to the water consumption
standards established in EISA 2007.\3\ (42 U.S.C. 9295(g)(9) In the
August 2009 standards framework document, available at https://www1.eere.energy.gov/buildings/appliance_standards/residential/pdfs/clothes_washers_framework.pdf, DOE requested comments on revising the
clothes washer test procedure. Issues presented in the framework
document, including issues related to the test procedure, were
discussed at the September 2009 standards public meeting.
---------------------------------------------------------------------------
\3\ EISA 2007 amended EPCA, in relevant part, to revise the
energy conservation standards for residential clothes washers. The
revised standards established a maximum water consumption factor
(WF) of 9.5, effective January 1, 2011.
---------------------------------------------------------------------------
In response to the August 2009 standards framework document, DOE
received comments stating that it should consider changes to the active
mode test procedure for clothes washers. As a result, DOE proposed in
the September 2010 NOPR to address issues regarding the active mode
provisions of the test procedure, in addition to proposing the
inclusion of measures for standby and off mode power. The proposals are
discussed in greater detail below.
DOE proposed a number of revisions and additions to the test
procedure in the September 2010 NOPR, including: (1) Incorporating
standby and off mode power into a combined energy metric; (2)
addressing technologies not covered by the appendix J1 test procedure,
such as steam wash cycles and self-clean cycles; (3) revising the
number of annual wash cycles; (4) updating use factors; (5) revising
the procedures and specifications for test cloth; (6) redefining the
appropriate water fill level for the capacity measurement method; (7)
establishing a new measure of water consumption; and (8) revising the
definition of the energy test cycle. DOE requested comment on the
proposals in the September 2010 NOPR and discussed the proposals at the
October 2010 public meeting.
[[Page 13891]]
The August 2011 SNOPR proposed to incorporate certain provisions of
IEC Standard 62301 (Second Edition), as well as additional amendments
addressing the following: (1) The energy test cycle definition; (2) the
load adjustment factor; (3) the wash time setting for certain clothes
washers; (4) the calculation of annual energy cost; (5) extension of
the test load size table; (6) the definition of cold rinse; (7)
redundant sections for test cloth specifications; (8) the detergent
specification; (9) the definition of cold wash; and (10) the
calculations for per-cycle self-clean water consumption. DOE requested
comment on the proposals in the August 2011 SNOPR.
The November 2011 SNOPR proposed a revised definition for the
energy test cycle. DOE requested additional comment on its proposal.
In today's final rule, DOE addresses comments it received on the
September 2010 NOPR that were not previously addressed in the August
2011 SNOPR, as well as comments received in response to the August 2011
SNOPR and November 2011 SNOPR. DOE responds to these comments in
section III.
II. Summary of the Final Rule
In this final rule, DOE establishes a new clothes washer test
procedure (in a new appendix J2) that integrates measures of standby
mode and off mode energy consumption, as well as measures of energy
consumption in certain additional modes determined to be part of active
mode. This final rule also: (1) Introduces a new efficiency metric for
water consumption; (2) more accurately reflects current consumer usage
patterns; (3) revises the energy test cycle definition; (4) revises the
capacity measurement method; (5) addresses issues related to the test
cloth, including the preconditioning detergent and test equipment; (6)
clarifies certain testing conditions; (7) provides additional
clarifications and corrections to certain provisions of the test
procedure; (8) revises the calculation for annual operating cost; (9)
revises and clarifies certain provisions in appendix J1; (10) removes
the obsolete appendix J to subpart B of 10 CFR part 430; and (11)
amends the certification, compliance, and enforcement requirements for
residential clothes washers. The following paragraphs summarize these
changes.
A. Standby and Off Mode
The new clothes washer test procedure includes provisions for
measuring energy consumption in standby and off modes. DOE incorporates
by reference IEC Standard 62301 (Second Edition). In the new test
procedure, DOE includes language to clarify the application of clauses
from the Second Edition regarding test conditions and test procedures
for measuring standby mode and off mode energy consumption. The new
test procedure includes definitions of ``active mode,'' ``standby
mode,'' and ``off mode'' based on the definitions provided in the
Second Edition. It also incorporates a simplified measurement approach
that accounts for energy consumption in all low-power modes--including
standby, off, delay start, and cycle finished modes--by means of a
single power measurement. DOE also adopts a new measure of energy
efficiency, the integrated modified energy factor (IMEF), which
includes the energy used in the active, standby, and off modes.
B. Water Consumption
The new test procedure establishes a new measure of efficiency, the
integrated water consumption factor (IWF), which incorporates the water
consumption of all wash/rinse test cycles.
C. Updated Consumer Usage Patterns
The new test procedure updates certain values from the existing
test procedure to reflect current consumer usage patterns and
capabilities. This final rule: (1) Updates the number of annual wash
cycles and incorporates it into the calculation for combined low-power
mode energy consumption; (2) extends the test load sizes table to
accommodate test loads for large-capacity clothes washers; (3) updates
the temperature use factors for the warm/cold and warm/warm temperature
combinations to accommodate the warm/warm cycle as a complete cycle;
(4) updates the dryer usage factor; and (5) replaces the current
representative load size calculation in the drying energy equation,
which is based on the load adjustment factor, with a weighted-average
load size based on the minimum, average, and maximum load sizes and the
load usage factors.
D. Energy Test Cycle Definition
The new test procedure modifies the definition of the energy test
cycle to improve clarity, which DOE believes will result in more
accurate, repeatable, and reproducible results within and among all
test laboratories.
E. Capacity Measurement Method
The new test procedure modifies the capacity measurement method to
improve clarity, repeatability, and reproducibility, and to more
appropriately represent the usable volume of the clothes washer during
operation.
F. Test Cloth, Detergent, and Preconditioning Test Equipment
The new test procedure: (1) Includes new test cloth definitions;
(2) establishes tolerances for the size and weight of the test cloth;
(3) updates the detergent specification to reflect the current
industry-standard detergent; (4) updates the test cloth preconditioning
wash requirements; (5) updates the industry test methods referenced in
the test procedure to reflect the current versions of each standard;
(6) adds a new industry test method for measuring test cloth shrinkage;
(7) adds a requirement to conduct extractor tests at the 650 g-force
level; (8) updates the extractor specification; (9) adds specifications
for the dryer to be used for bone-drying the test cloth; (10) clarifies
the procedures for preparing and handling test cloth bundles; (11)
clarifies the remaining moisture content (RMC) nomenclature used
throughout the test procedure; (12) clarifies the application of the
RMC correction curve; and (13) removes redundant sections regarding
test cloth specifications and preconditioning, which were made obsolete
by the January 2001 standards Final Rule.
G. Testing Conditions
Today's final rule clarifies the water supply pressure
specification.
H. Clarifications and Corrections
This final rule: (1) Corrects the definition of ``cold rinse''; (2)
clarifies the method for setting the wash time on clothes washers with
electromechanical dials; (3) clarifies the definition of ``cold wash''
for clothes washers that offer multiple cold wash settings; (4) removes
an obsolete note in the water factor calculation section; (5) corrects
a typographical error in the equation for calculating per-cycle hot
water consumption using gas-heated or oil-heated water; (6) removes the
obsolete calculation of energy factor (EF); (7) clarifies the
procedures recommended for conducting field tests in support of a test
procedure waiver; (8) clarifies the water factor metric terminology;
and (9) corrects typographical errors in materials incorporated by
reference.
I. Annual Operating Cost Calculation
Today's final rule amends the annual operating cost calculation in
10 CFR 430.23(j) to incorporate the cost of energy consumed in standby
and off
[[Page 13892]]
modes, and to reflect an updated number of annual use cycles.
J. Revisions to Appendix J1
This final rule revises and clarifies certain provisions in
appendix J1, some of which are identical to revisions made in appendix
J2. Manufacturers will continue to use the amended version of appendix
J1 to certify compliance until use of appendix J2 is required for
certification.
Specifically, this final rule: (1) Revises the introductory text to
appendix J1; (2) corrects typographical errors in materials
incorporated by reference; (3) corrects the definition of ``cold
rinse''; (4) removes redundant sections regarding test cloth
specifications and preconditioning, which were made obsolete by the
January 2001 standards Final Rule; (5) updates the test cloth
preconditioning detergent specification to reflect the current
industry-standard detergent; (6) clarifies the method for setting the
wash time for clothes washers with electromechanical dials; (7)
clarifies the definition of ``cold wash'' for clothes washers that
offer multiple cold wash settings; (8) removes an obsolete note in the
water factor calculation section; (9) corrects a typographical error in
the equation for calculating per-cycle hot water consumption using gas-
heated or oil-heated water; (10) extends the load size table to
accommodate test loads for large-capacity clothes washers; (11)
clarifies the procedures recommended for conducting field tests in
support of a test procedure waiver; and (12) corrects and clarifies
provisions for calculating the RMC correction curve.
K. Removal of Appendix J
Today's final rule removes appendix J to subpart B of 10 CFR part
430, which became obsolete when appendix J1 became effective.
L. Certification, Compliance, and Enforcement Requirements
Today's final rule modifies the reporting requirements in 10 CFR
429.20(b)(2) by specifying that a certification report shall include
publicly available information including MEF, WF, and capacity; as well
the list of cycle settings comprising the complete energy test cycle
for each basic model, which would not be made publicly available as
part of the report. The requirement to provide the list of cycle
settings comprising the complete energy test cycle will apply only to
test results obtained using appendix J2.
III. Discussion
A. Products Covered by This Test Procedure Final Rule
Today's final rule covers residential clothes washers, defined as
follows in 10 CFR 430.2:
Clothes washer means a consumer product designed to clean clothes,
utilizing a water solution of soap and/or detergent and mechanical
agitation or other movement, and must be one of the following classes:
Automatic clothes washers, semi-automatic clothes washers, and other
clothes washers.
Automatic clothes washer means a class of clothes washer which has
a control system which is capable of scheduling a preselected
combination of operations, such as regulation of water temperature,
regulation of the water fill level, and performance of wash, rinse,
drain, and spin functions without the need for user intervention
subsequent to the initiation of machine operation. Some models may
require user intervention to initiate these different segments of the
cycle after the machine has begun operation, but they do not require
the user to intervene to regulate the water temperature by adjusting
the external water faucet valves.
Semi-automatic clothes washer means a class of clothes washer that
is the same as an automatic clothes washer except that user
intervention is required to regulate the water temperature by adjusting
the external water faucet valves.
Other clothes washer means a class of clothes washer which is not
an automatic or semi-automatic clothes washer.
Pursuant to 42 U.S.C. 6295(q), existing energy conservation
standards divide residential clothes washers into five product classes
(10 CFR 430.32(g)):
Top-loading, Compact (less than 1.6 cubic feet capacity)
Top-loading, Standard (1.6 cubic feet or greater capacity)
Top-loading, Semiautomatic
Front-loading
Suds-saving
DOE received comments from interested parties regarding clothes
washer product classes in response to the September 2010 NOPR. BSH Home
Appliances (BSH) commented that it supports removing the distinction
between front-loading and top-loading clothes washers. DOE notes that
the amended test procedure contains provisions for testing both top-
loading and front-loading clothes washers of varying capacities. DOE is
considering the issue of how clothes washers should be grouped into
product classes in the separate rulemaking addressing energy
conservation standards for residential clothes washers (Docket EERE-
2008-BT-STD-0019).
The People's Republic of China (China) commented that DOE did not
specifically consider non-detergent types of clothes washers, and that
DOE should set appropriate energy efficiency requirements for such non-
detergent machines. (China, No. 19 at p. 4) DOE does not have any
information on residential clothes washers currently available in the
United States that use cleaning mechanisms other than the combination
of water, detergent, and mechanical agitation. Therefore, DOE is not
incorporating any changes to the definitions of covered products in
today's final rule.
B. Standby Mode and Off Mode Test Procedure Provisions
This section describes the standby and off mode test procedure
provisions adopted in today's final rule. DOE received a number of
comments from interested parties regarding the standby and off mode
definitions and test procedure provisions in IEC Standard 62301
proposed in the September 2010 NOPR. DOE responded to many of these
comments in the August 2011 SNOPR and addresses additional comments
from the September 2010 NOPR and the August 2011 SNOPR in the
discussion that follows.
1. Version of IEC Standard 62301
DOE proposed in the September 2010 NOPR to incorporate by reference
certain provisions from sections 4 and 5 of IEC Standard 62301 (First
Edition), as well as certain provisions from the Committee Draft for
Vote (CDV) version and the Final Draft International Standard (FDIS)
version, developed prior to the issuance of the Second Edition. DOE
received numerous comments in response to the September 2010 NOPR
regarding the version of IEC Standard 62301, and provided responses to
comments in the August 2011 SNOPR.
Based on comments from interested parties, DOE proposed in the
August 2011 SNOPR to incorporate by reference the Second Edition of IEC
Standard 62301 for measuring standby and off mode power. Specifically,
DOE proposed referencing the following sections in the Second Edition:
(1) The room ambient air conditions specified in section 4, paragraph
4.2; (2) the electrical supply voltage waveform specified in section 4,
paragraph 4.3.2; (3) the power meter requirements specified in section
4, paragraph 4.4; (4) the note regarding the time required to
[[Page 13893]]
enter a stable power state in section 5, paragraph 5.1, note 1; (5) the
installation instructions in section 5, paragraph 5.2; and (6) the
power sampling method specified in section 5, paragraph 5.3.2.
DOE received the following comments in response to the August 2011
SNOPR: The Association of Home Appliance Manufacturers (AHAM), Alliance
Laundry Systems (ALS), the Northwest Energy Efficiency Alliance (NEEA),
and Whirlpool Corporation (Whirlpool) reiterated their support for
incorporating by reference the Second Edition of IEC Standard 62301.
AHAM and ALS stated that the Second Edition contains a number of
important clarifications not present in the First Edition. Furthermore,
AHAM and ALS stated that adopting the Second Edition will allow for
international harmonization, which will give clarity and consistency to
the regulated community. AHAM also stated that the Second Edition
decreases testing burden. Whirlpool stated that the incorporation of
the Second Edition should not be applicable until the effective date of
appendix J2. (AHAM, No. 24 at p. 2; ALS, No. 22 at p. 1; NEEA, No. 26
at p. 2; Whirlpool, No. 27 at p. 1)
In this final rule, DOE incorporates by reference IEC Standard
62301 (Second Edition) for the test procedure in appendix J2. DOE
believes that the new test procedures provide improved accuracy and
representativeness of the resulting power measurement, and are not
unduly burdensome to conduct, as described further in sections III.B.6
and III.G.1.
This final rule also amends 10 CFR 430.3 by adding a reference to
IEC Standard 62301 (Second Edition). DOE retains the reference to the
First Edition in 10 CFR 430.3 because several test procedures for other
covered products not addressed in this final rule incorporate
provisions from the First Edition.
Today's final rule also corrects the address and telephone number
listed for the American National Standards Institute (ANSI) under the
newly designated section for IEC standards in 10 CFR 430.3(m). The
current address and phone number for ANSI is 25 W. 43rd Street, 4th
Floor, New York, NY 10036, (212) 642-4900. This correction is
consistent with the address and phone number currently listed for ANSI
in 10 CFR 430.3(c).
2. Determination of Modes To Be Incorporated
EPCA provides mode definitions for active mode, standby mode, and
off mode, but authorizes DOE to amend these mode definitions by taking
into consideration the most current version of IEC Standard 62301. (42
U.S.C. 6295(gg)(1)(B)) In the September 2010 NOPR, DOE noted that the
mode definitions provided in IEC Standard 62301 (First Edition) and
EPCA (as amended by EISA 2007) were designed to be broadly applicable
for many energy-using products and could be subject to multiple
interpretations. Therefore, DOE proposed mode definitions based on
those provided in IEC Standard 62301 (FDIS), but with added
clarifications specific to clothes washers.
In response to the September 2010 NOPR, NEEA commented that DOE's
proposed modes and definitions would systematically exclude significant
potential sources of annual energy use in many clothes washers. (NEEA,
No. 12 at p. 2) NEEA also commented that DOE did not incorporate the
``Definitions'' section of IEC Standard 62301, and expressed concern
about possible discrepancies between the modes specified in IEC
Standard 62301 and the modes that are defined in EPCA. (NEEA, Public
Meeting Transcript, No. 20 at pp. 22-23) NEEA added that not defining
the modes identically with the IEC definitions could create
inconsistencies in the way the modes are measured. (NEEA, Public
Meeting Transcript, No. 20 at p. 24) NEEA's comments regarding specific
modes and definitions are addressed in the relevant sections that
follow.
For the reasons stated above, DOE maintained the mode definitions
proposed in the September 2010 NOPR in the August 2011 SNOPR. DOE
further proposed an ``alternate approach'' for measuring total energy
consumption. In the alternate approach, the energy consumption of all
low-power modes would be measured only in the inactive and off modes,
and all low-power mode hours would be allocated to the inactive and off
modes, depending on which of these modes is present.
In response to the August 2011 SNOPR, AHAM agreed that the Second
Edition definitions are identical to those in the FDIS version and,
thus, do not need to be revised. AHAM added that if DOE chooses to
reference IEC Standard 62301 for those definitions, it should reference
the Second Edition, not the FDIS, because the Second Edition is the
final, published, and most current version of the standard. (AHAM, No.
24 at pp. 2-3)
DOE also proposed in the August 2011 SNOPR that certain
installation instructions in IEC Standard 62301 (Second Edition)
regarding the determination, classification, and testing of relevant
modes were not appropriate for the clothes washer test procedure.
Section 5, paragraph 5.2 of the Second Edition requires that where
instructions for use provide configuration options, each relevant
option should be separately tested. As stated in the August 2011 SNOPR,
DOE is concerned that this requirement to separately test each
configuration option could substantially increase test burden. It also
potentially conflicts with the requirement in paragraph 5.2 to set up
the product in accordance with the instructions for use or, if no such
instructions are available, to use the factory or default settings.
Accordingly, DOE proposed qualifying language in the test procedure
amendments to disregard those portions of the installation
instructions. For these reasons, DOE adopts language in today's final
rule to disregard the provisions of paragraph 5.2 regarding the
determination, classification, and testing of relevant modes.
The sections below provide additional details regarding the
definition and inclusion of each specific mode within the revised test
procedure.
Active Mode
DOE proposed in the September 2010 NOPR to define active mode as a
mode in which the clothes washer is connected to a main power source;
has been activated; and is performing one or more of the main functions
of washing, soaking, tumbling, agitating, rinsing, and/or removing
water from the clothing, or is involved in functions necessary for
these main functions, such as admitting water into the washer or
pumping water out of the washer. DOE also proposed including three
additional modes within active mode: Delay start mode, cycle finished
mode, and self-clean mode.
AHAM and the Pacific Gas and Electric Company (PG&E), Southern
California Gas Company (SCG), San Diego Gas and Electric (SDG&E), and
Southern California Edison (SCE) (collectively, the ``California
Utilities'') support the active mode definition proposed in the
September 2010 NOPR, which would include delay start, cycle finished,
and self-clean modes. (AHAM, No. 14 at p. 4; California Utilities, No
18 at p. 2) However, AHAM stated that it opposes DOE's proposal to
measure the energy use in delay start and cycle finished modes
separately from the energy use of the active washing mode because delay
start and cycle finished modes represent a very small contribution to
the annual energy use. (AHAM, No. 14 at pp. 3-4) The California
Utilities expressed concern
[[Page 13894]]
about how the power in these modes is measured and included in the
proposed test procedure. (California Utilities, No 18 at p. 2)
NEEA agreed with the proposal to define delay start and cycle
finished modes as active modes, but commented that the point at which
the active washing mode ends and the inactive mode begins is not clear.
NEEA recommended that DOE define the end of the active washing mode so
that manufacturers will know when to stop the energy measurement.
(NEEA, Public Meeting Transcript, No. 20 at p. 97; NEEA, No. 12 at pp.
2, 4, 5; NEEA, No. 26 at pp. 2, 4-5) NEEA further commented that the
spin cycle is typically the last element of an active wash mode, and
access to the clothes washing compartment is prevented until this part
of the cycle has concluded; thus, the point at which the user can gain
access to the wash compartment is one possible definition for the end
of the active washing mode. (NEEA, No. 12 at p. 7; NEEA, No. 26 at p.
6)
NEEA also suggested that active mode could be defined as starting
with the activation of the delayed start mode, if any (with the
duration of delayed start mode specified), and ending with the
beginning of the inactive mode (with the duration of the cycle finished
mode, if any, specified, either in minutes or number of cycles or
both). (NEEA, No. 12 at p. 4-5) NEEA expressed concern that the
definition of the active washing mode leaves out functions that might
occur in delay start, cycle finished, or self-clean modes. (NEEA, No.
12 at p. 4) NEEA further suggested that if delay start and cycle
finished modes are defined as part of the active mode, DOE could
include them in the definition of the active mode energy test cycle and
specify their durations. NEEA noted that while this would lengthen the
test cycle, it would probably result in an overall reduction in test
procedure time by eliminating the setup time and separate measurement
time required for measuring energy consumption in these two modes.
(NEEA, No. 12 at p. 13-14)
The Natural Resources Defense Council (NRDC) questioned whether the
active washing mode includes the pre- and post-parts of the active
cycle. (NRDC, Public Meeting Transcript, No. 20 at pp. 96-97)
DOE notes that the adopted definition of active washing mode
includes the main function of removing water from the clothing; i.e.,
the final spin cycle, which is typically the last operation of a wash
cycle. DOE infers from NEEA's comments that its concern about defining
the end of active washing mode relates to clothes washers in which
there may be additional energy-consuming functions other than a
continuous status display in cycle finished mode, such as periodic
tumbling or air circulation. As discussed in section III.B.2.c, this
final rule does not require the testing of any cycle-finished activity.
Thus, for the purpose of measuring energy consumption in the energy
test cycle, the end of the active washing mode occurs at the end of the
final spin to remove moisture.
This final rule also accounts for the energy use of delay start
mode by allocating the hours not associated with active washing mode
(which include those associated with delay start mode) to the inactive
and off modes, as described in section III.B.7. The energy use of delay
start mode is therefore not separately measured, as discussed in
section III.B.2.b.
Delay Start Mode
In the September 2010 NOPR, DOE proposed to define delay start mode
as an active mode in which the start of the active washing mode is
facilitated by a timer. Because delay start mode is not a mode that may
persist for an indefinite time, and is uniquely associated with the
initiation of a main function (i.e., washing cycle), DOE determined
that it would not be considered as part of standby mode.\4\ For this
final rule, DOE has determined that because delay start is of limited
duration and is uniquely associated with the initiation of a primary
function, it should be considered part of active mode.
---------------------------------------------------------------------------
\4\ DOE noted in the September 2010 NOPR that section 3.8 of IEC
Standard 62301 Committee Draft 2 (IEC Standard 62301 CD2) provided
the additional clarification that ``delay start mode is a one-off
user-initiated short-duration function that is associated with an
active mode.'' The subsequent IEC Standard 62301 CDV removed this
clarification based on a comment from a committee member that the
clarification conflicted with the proposed definition of ``standby
mode,'' which would include ``activation of * * * active mode by * *
* timer.'' In its response to that comment, however, the IEC
reiterated that delay start mode is a one-off function of limited
duration, even though it took action to delete the clarification in
IEC Standard 62301 CDV. DOE inferred this to mean that that delay
start mode should, therefore, be considered part of active mode. DOE
also notes that Annex A of IEC Standard 62301 (Second Edition)
classifies delay start as a secondary function and therefore not
part of active mode.
---------------------------------------------------------------------------
DOE proposed in the September 2010 NOPR to measure delay start mode
by setting the delay start time to 5 hours, allowing at least a 5-
minute stabilization period, and then measuring and recording the
average power over a 60-minute measurement period.
In the August 2011 SNOPR, DOE proposed not to adopt provisions to
measure delay start mode separately or as part of the active washing
mode. Instead, DOE proposed adopting the ``alternate approach,'' in
which all low-power mode hours would be allocated to the inactive and
off modes, and the low-power mode energy consumption would be measured
only in the inactive and off modes, depending on which of these modes
is present.
ALS, AHAM, and Whirlpool supported DOE's proposal to consider delay
start mode as part of active mode. (ALS, No. 10 at p. 1; AHAM, No. 14
at p. 3; Whirlpool No. 13 at p. 2) BSH supported the proposed delay
start mode definition, and agreed that this mode should be included in
the test procedure. (BSH, No. 17 at p. 2) AHAM and ALS supported using
the ``alternate approach'' for measuring power in low-power modes. AHAM
opposed separately measuring delay start mode, stating that the
additional complexities of the test significantly add to the testing
burden without a corresponding benefit to the public interest. AHAM
stated that the de minimus amount of energy that will be measured, 0.04
to 0.2 kWh annually per DOE's data, will not add significantly, or
possibly at all, to national consumption figures. (AHAM, No. 14 at p.
6; AHAM, No. 24 at p. 3; ALS, No. 22 at p. 2)
Whirlpool commented that the LED-based technology on which DOE
proposed a 60-minute delay start mode is rapidly disappearing from new
product introductions. (Whirlpool No. 13 at p. 3) Whirlpool also
commented that the 60-minute delay start mode test would add
substantial test burden (6-7 percent), with little or no impact on
overall measured energy consumption. Whirlpool believes that this would
create an unacceptable test burden for manufacturers and strongly urged
the Department to drop this proposal. (Whirlpool No. 13 at p. 4)
NEEA agreed that delay start mode is an active mode, but stated
that the measurement of energy consumption in this mode should be
folded into the measurements during the active washing mode. (NEEA, No.
12 at p. 5; NEEA, No. 26 at pp. 2, 7) NEEA indicated that it would
support the proposed methodology of setting a 5-hour delay and
measuring for one hour if DOE continued with the proposal to measure
the energy use of delay start mode separately. NEEA also stated that
the warm-up period should be 10 minutes to be consistent with IEC
Standard 62301 general procedures, rather than the proposed 5 minute
warm-up period. (NEEA, No. 12 at p. 5) NEEA commented that DOE did not
fully understand the reasons why delay start mode would be used in a
[[Page 13895]]
household; according to NEEA, in some households the delayed start
function is used to allow time for stain-removal compounds to work
before the wash cycle starts. The delayed start time is based on the
stain-removal compound manufacturer's recommendation for a soak time of
30 minutes. NEEA suggested that DOE acquire consumer data regarding
usage of this feature, including the average time spent in delay start
mode. (NEEA, No. 12 at pp. 5-6; NEEA, No. 26 at p. 7)
BSH commented that delay start mode contributes a negligible amount
of energy consumption to consumers due to low usage and low energy
consumption during usage. According to BSH, measuring this energy is
not a valuable use of DOE or manufacturer lab resources. (BSH, No. 17
at p. 2) However, should measurement of delay start mode be required,
BSH agrees with the proposed method. (BSH, No. 17 at p. 3)
Upon consideration of the data and estimates provided in the
September 2010 NOPR, the uncertainty regarding consumer usage patterns,
and the additional test burden that would be required, DOE has
determined that measuring the energy consumption of delay start mode
separately would introduce significant test burden without a
corresponding improvement in a representative measure of annual energy
consumption. Therefore, this final rule adopts the ``alternate
approach,'' in which the energy use in all low-power modes (including
delay start mode) is accounted for by allocating all low-power mode
hours to the inactive and off modes. Low-power mode energy consumption
is then measured in the inactive and off modes, depending on which of
these modes is present. Section III.B.7 provides additional information
regarding the measurement of low-power mode. As a result, this final
rule does not include provisions to measure delay start mode separately
as part of the active washing mode.
Cycle Finished Mode
DOE proposed in the September 2010 NOPR to define cycle finished
mode as an active mode that provides continuous status display
following operation in the active washing mode. As with delay start
mode, cycle finished mode is not a mode that may persist for an
indefinite time. Operation in cycle finished mode occurs only after
operation in the active washing mode. Therefore, DOE considered cycle
finished mode as a short-duration function associated with active mode
and proposed to define cycle finished mode as a part of active mode.
DOE noted that some clothes washers available at the time of
publication of the September 2010 NOPR offered energy-consuming
features other than a continuous status display in cycle finished mode.
For example, certain models may periodically tumble the clothes to
prevent wrinkles for up to 10 hours after the completion of the wash
cycle. Some models may also use a low-power fan to circulate air around
the damp clothes to prevent odors. These functions, while enabled,
would use more energy than the continuous display normally associated
with cycle finished mode. However, DOE research indicated that the
number of residential clothes washers equipped with such features
represents less than 10 percent of the residential clothes washer
market. In addition, review of product literature for the clothes
washers equipped with such features shows that these features are
typically consumer-selected options. DOE determined that measuring the
energy use from these functions would significantly increase the test
cycle duration to capture a negligible contributor to annual energy
consumption. Therefore, DOE did not propose to amend the test procedure
to address these specific cycle finished mode functions.
DOE received numerous comments in response to the September 2010
NOPR regarding cycle finished mode. ALS, Whirlpool, and AHAM stated
that cycle finished mode should be considered a part of active mode.
(ALS, No. 10 at p. 1; Whirlpool, No. 13 at p. 2; AHAM, No. 14 at p. 3)
Whirlpool supported DOE's proposal to exclude cycle finished mode
energy consumption due to air circulation or periodic tumbling because
these functions are very limited in their application, and the
measurement burden would substantially outweigh the value. (Whirlpool,
No. 13 at p. 2) AHAM commented that it does not support measuring cycle
finished mode separately from the rest of the active mode. (AHAM, No.
14 at p. 6)
NEEA disagreed with DOE's proposed cycle finished definition. NEEA
commented that the proposed cycle finished mode definition comprises
only a display function, which could exclude other energy-consuming
features in a cycle finished mode. (NEEA, No. 12 at p. 2) Additionally,
NEEA commented that it did not understand how DOE proposed to measure
energy consumption in cycle finished mode for clothes washers with
energy-consuming features other than a continuous status display, such
as tumbling of the drum or a fan circulating air. (NEEA, Public Meeting
Transcript, No. 20 at pp. 35-36) NEEA stated that, based on information
from a clothes washer tax credit program conducted in the state of
Oregon, it is aware of thousands of clothes washers that include
tumbling after the end of the wash cycle. (NEEA, Public Meeting
Transcript, No. 20 at p.37)
To address these concerns, NEEA proposed the following alternate
definition of cycle finished mode: ``Cycle finished mode means the
portion of the active mode between the end of the active washing mode
and the beginning of the inactive mode.'' (NEEA, No. 12 at p. 2; NEEA,
No. 26 at p. 4) NEEA also suggested that DOE create a methodology to
measure cycle finished activity, which IEC Standard 62301 is attempting
to do, so that any energy consumption that occurs during that period
can be measured. (NEEA, Public Meeting Transcript, No. 20 at pp. 40-41)
NEEA suggested that an appropriate temperature use factor (TUF) should
be applied to delayed start and cycle finished modes. (NEEA, No. 31 at
p. 2)
NRDC, the American Council for an Energy Efficient Economy (ACEEE),
and the Appliance Standards Awareness Project (ASAP), jointly
(hereafter, the ``Joint Commenters'') suggested that DOE expand the
definition of cycle finished mode to include any energy-consuming
features following operation in the active washing mode. The Joint
Commenters stated that to avoid additional testing burden for clothes
washers that only have a continuous display in cycle finished mode, DOE
could specify a separate test procedure and a different number of
annual hours to cycle finished mode for clothes washers with additional
energy-consuming features. Additionally, this comment noted that if
these features are not captured in the test procedure, manufacturers
will have no incentive to reduce their energy consumption in cycle
finished mode while providing the additional functionality. (Joint
Commenters, No. 16 at p. 4) The Joint Commenters and the California
Utilities also noted that machines having these additional features in
cycle finished mode are likely to become more available in the
marketplace in the future, and therefore it is not appropriate to
exclude the energy consumption from these features in the test
procedure. (Joint Commenters, No. 16 at pp. 3-4; California Utilities,
No. 18 at p. 2)
BSH commented that DOE needs to define cycle finished mode more
clearly. According to BSH, the proposed definition attempts to
differentiate the
[[Page 13896]]
end-of-cycle signal from a ``left-on mode.'' BSH stated that it is
unclear what is considered cycle finished mode and what is inactive
mode, and that more clarity and detail is needed in the definition
(BSH, No. 17 at p. 2)
In the August 2011 SNOPR, DOE presented results from additional
laboratory testing to quantify the energy consumption in cycle finished
mode. The test results indicated that including specific measurement of
a cycle finished feature that incorporates intermittent tumbling and
air circulation would not significantly impact the total annual energy
consumption. Furthermore, measuring the energy use over the entire
duration of the cycle finished mode could increase the test duration by
up to 10 hours, depending on the maximum duration of the cycle finished
mode provided on the clothes washer. Therefore, DOE proposed not to
adopt provisions to measure cycle finished mode separately as part of
the active washing mode.
In response to the August 2011 SNOPR, Whirlpool agreed with DOE's
proposal not to adopt measurement of cycle finished mode, stating that
the test burden would be substantially greater with virtually no
consumer benefit. (Whirlpool, No. 27 at pp. 1-2)
NEEA disagreed with the definition of cycle finished mode and
reiterated its proposal to define cycle finished mode as follows:
``Cycle finished mode means the portion of active mode between the end
of the active washing mode and the beginning of the inactive mode.''
NEEA opposed ignoring cycle finished mode hours and energy use, and
stated that the energy associated with cycle finished mode should be
included as part of active mode. NEEA stated that in the worst case
scenario, the energy use in cycle finished mode consumes around 20
percent of the total clothes washer machine energy, when dryer energy
use is excluded. NEEA stated that cutting the cycle finished energy to
one-third of the worst-case scenario would still represent 7 percent of
the total machine energy consumption. NEEA stated that if energy use in
cycle finished mode is considered to be insignificant, the same logic
could be applied to standby and off modes, which is an argument
Congress already rejected. (NEEA, No. 26 at pp. 2-7)
The Joint Commenters stated that the demonstrated potential
consumption of energy in cycle finished mode warrants the testing of
cycle finished mode in the test procedure. The Joint Commenters further
stated that the amount of energy consumed in cycle finished mode is
considerable when dryer energy is disregarded. The Joint Commenters
stated that when dryer energy use is disregarded, inclusion of cycle
finished mode doubles the amount of energy consumed while in low-power
mode, causing the energy consumption to approach the energy consumed in
active mode. The Joint Commenters believe that future clothes washers
will likely incorporate more features in cycle finished mode, causing
the energy consumption in that mode to increase to a more significant
portion of the total per-cycle energy. The Joint Commenters support
folding cycle finished mode into the existing active mode test cycle by
either letting the clothes washer run through the completed cycle
finished mode, or, alternatively, by terminating the test one hour
after the clothes washer enters cycle finished mode. The Joint
Commenters do not believe that this would significantly increase the
test burden, as it would lengthen the test by one hour and would not
require additional setup or test preparation. Finally, the Joint
Commenters commented that the uncertainty of consumer usage patterns is
an invalid argument against its inclusion in the test procedure, and
that substituting reasonable estimates as proxies would suffice. (Joint
Commenters, No. 23 at pp. 2-4)
The California Utilities suggested requiring separate measurements
for cycle finished mode. The California Utilities stated that while
they recognize that cycle finished mode represents a small percentage
of energy consumption when compared to dryer energy, they believe it is
a significant amount of energy and similar in magnitude to the
electrical energy of the washer cycle. The California Utilities further
commented in response to November 2011 SNOPR that they do not agree
with DOE's assertion that cycle finished mode is activated only by the
consumer, and that they possess knowledge that cycle finished mode is
the default setting for certain clothes washer models, and cannot be
deactivated or turned off. In addition, the California Utilities stated
that there are other units that tumble more frequently than the model
DOE tested. Furthermore, the California Utilities commented that the
test procedure should measure all low-power modes, and that measuring
all energy-consuming modes will encourage manufacturers to take
efficiency into account at the beginning of their research and
development efforts. (California Utilities, No. 25 at p. 2; California
Utilities, No. 36 at pp. 1-2)
Upon consideration of the features that may be energized during the
time period after the active washing mode and before the clothes washer
enters inactive or off mode, DOE agrees that the proposed definition
does not fully describe the possible functions in cycle finished mode.
DOE concludes that periodic tumbling of the clothing or air circulation
by means of a fan or blower constitute additional active mode functions
outside the active washing mode, and thus should be included in the
definition of cycle finished mode. Therefore, today's final rule adopts
an expanded definition of cycle finished mode as ``an active mode that
provides continuous status display, intermittent tumbling, or air
circulation following operation in active washing mode.''
However, upon consideration of the data and estimates provided in
the September 2010 NOPR, the additional energy consumption estimates
provided in the August 2011 SNOPR, the uncertainty regarding consumer
usage patterns, and the additional test burden required, today's final
rule adopts the ``alternate approach'' to account for the energy use in
cycle finished mode. Under this approach, all low-power mode hours are
allocated to the inactive and off modes, and the low-power mode power
is then measured in the inactive and off modes, depending on which of
these modes is present. Section III.B.7 provides additional information
regarding the measurement of low-power mode. DOE does not include
provisions to measure cycle finished mode separately as part of the
active washing mode.
Self-Clean Mode
In the September 2010 NOPR, DOE proposed to define self-clean mode
as an active clothes washer operating mode that is (a) Dedicated to
cleaning, deodorizing, or sanitizing the clothes washer by eliminating
sources of odor, bacteria, mold, and mildew; (b) recommended to be run
intermittently by the manufacturer; and (c) separate from clothes
washing cycles. DOE considered self-clean mode as a part of the active
mode because it is a function necessary for the main functions
associated with washing clothes. A clothes washer with excessive
bacteria, mildew, or odor cannot wash clothes effectively.
NEEA supports DOE's proposal to include self-clean mode as a part
of active mode, and to include energy and water consumption in this
mode in the test procedure. (NEEA, No. 12 at pp. 5, 9; NEEA, No. 26 at
pp. 5-6) However, NEEA suggests the following definition of self-clean
mode to clarify the proposed version: ``Self-cleaning mode means an
active clothes washer operating mode that is recommended by
[[Page 13897]]
the manufacturer to be run for the purpose of cleaning, deodorizing, or
sanitizing the clothes washer by eliminating sources of odor, bacteria,
mold and mildew.'' (NEEA, No. 12 at p. 5; NEEA, No. 26 at pp. 6) NEEA
stated that the number of self-clean annual cycles should be based on
the recommendations of the manufacturer because consumers are unlikely
to use these cycles in a way that is different than recommended. NEEA
also strongly recommended that whatever cycle is recommended by a
manufacturer for a self-cleaning function should be the one measured as
the self-cleaning cycle. (NEEA, No. 12 at p. 9) NEEA also urged DOE to
acquire consumer usage data on how self-clean cycles are actually used.
(NEEA, No. 12 at p. 9; NEEA, No. 26 at p. 8)
The Joint Commenters support the inclusion of self-clean mode in
the test procedure. The Joint Commenters stated that the definition
should not be limited to machines equipped with an explicitly
designated self-clean cycle, because self-cleaning may be undertaken
with an appropriate cleaning compound through the use of a standard
cycle available for washing clothes. (Joint Commenters, No. 16 at p. 3;
Joint Commenters, No. 23 at p. 5)
The Joint Commenters also recommended that a usage factor of 12
cycles per year should not be uniformly applied to all washers, but
rather should be based on the level of usage recommended by the
manufacturer, converted as necessary to the appropriate number of
cycles per year for the test procedure. This would provide further
encouragement for manufacturers to develop approaches to sanitizing and
deodorizing issues that are less energy- and water-intensive than
current practices. (Joint Commenters, No. 16 at p. 3; Joint Commenters,
No. 23 at p. 5)
The California Utilities commented that the proposed definition is
potentially too restrictive because manufacturers may recommend
intermittent self-clean cycles on machines without a dedicated self-
clean feature or control. The California Utilities also commented that
the calculation of self-clean cycles per year should be based on
manufacturer recommendations in the product literature, rather than on
a fixed number of annual self-clean cycles for all clothes washers. The
California Utilities suggested that for clothes washer models that meet
the definition of self-clean, but for which the manufacturer does not
recommend a specific usage frequency for the self-clean cycle, the test
procedure should assume the default value of 12 self-clean cycles per
year. (California Utilities, No. 18 at p. 3; California Utilities, No.
25 at p. 3)
NRDC expressed concern that if a manufacturer recommends a periodic
sanitizing regimen on a machine with no hardware or software dedicated
to self-cleaning, these cycles would not be captured by the proposed
definition. NRDC also commented that self-clean mode should be based on
the manufacturer's recommendation, and not on design features. (NRDC,
Public Meeting Transcript, No. 20 at pp. 47-48, 79-80)
Whirlpool commented that DOE should not include self-clean cycles
in the clothes washer test procedure. Whirlpool stated that including
this mode for clothes washers with such functionality, while not
including it for other machines, disadvantages machines that include a
self-clean cycle. According to Whirlpool, some consumer publications
and manufacturers recommend running periodic cleaning cycles with
baking soda or vinegar, and there is no known data on the consumer use
of such practice. (Whirlpool, No. 13 at p. 2) Whirlpool proprietary
data indicates that actual consumer use of a self-clean cycle is
substantially less than the 12 times per year that DOE proposed, and
that this data supports exclusion of self-clean energy from the test
procedure. (Whirlpool, No. 13 at p. 5-6) Whirlpool also commented that
if the self-clean cycle is included at the frequency of use recommended
by the manufacturer, this could lead to manufacturers suggesting less
frequent use. (Whirlpool, No. 13 at p. 5-6) Whirlpool estimated that
the inclusion of a self-clean cycle in the test procedure would add
approximately 8 percent to the overall test burden, or 8 hours, and
that the amount of energy and water used by the average Whirlpool
clothes washer during such cycles per year would be less than 1 percent
of annual energy consumption and 3 percent of annual water consumption.
Whirlpool believes that the added test burden outweighs the added
benefit of including self-clean cycles in the test procedure.
(Whirlpool, No. 13 at pp. 2, 6) However, Whirlpool agreed that if self-
clean mode were included in the test procedure, it would be a part of
active mode. (Whirlpool, No. 13 at p. 2).
AHAM opposes the inclusion of self-clean mode in the test
procedure, but stated that if DOE decides to include it, AHAM agrees
with the proposed definition as the best way to ensure measurement of
all machines with a self-clean feature. (AHAM, No. 14 at p. 4) AHAM
also notes that self-clean cycles have become necessary in large part
due to the increasingly stringent energy and water consumption
standards which, in practice, require many machines to use cold water
instead of hot or warm water, and to use less water. (AHAM, No. 14 at
p. 10) AHAM commented that there is no consumer use data to show
whether and/or how often consumers use self-clean cycles, and that test
procedures must be representative of actual consumer use, not
manufacturer recommendations. AHAM believes that DOE should not include
additional energy measurements in the test procedure without consumer
data to support its addition and to quantify the energy impact. (AHAM,
No .14 at p. 10) AHAM also commented that DOE's proposal to include
self-clean cycles unfairly disadvantages clothes washers with a self-
clean feature, which may dis-incentivize the feature, the result of
which would not benefit consumers. AHAM stated that it is difficult to
define an approach that would not encourage test procedure
circumvention. (AHAM, No. 14 at p. 11).
BSH stated that self-clean mode should include only cycles
specifically designed and provided for such activities. According to
BSH, consumers are less likely to perform such activities without a
dedicated program or option. (BSH, No 17 at p. 2) BSH commented that
should the self-clean cycle be included, the number of cycles per year
should be specified to match the manufacturer's suggestion to the
customer. Otherwise, the motivation to reduce the need for such cycles
is not present and manufacturers may not pursue innovations to reduce
this need. (BSH, No. 17 at p. 2) However, BSH commented that it does
not see the value to the consumer or DOE in assessing self-clean mode
energy consumption, and suggests that these hours be removed or
allocated to the active washing mode according to the self-cleaning
cycles per year specified by the manufacturer. (BSH, No. 17 at p. 3)
BSH stated that including the self-cleaning cycles will not
significantly contribute to the annual energy consumption of
residential washing machines. BSH suggests that instead of testing the
self-clean cycle, the total number of annual active-mode cycles per
year in the current energy calculations could be increased by a small
value. (BSH, No. 17 at p. 2) Additionally, BSH does not agree that
self-clean modes are necessary for the main functions associated with
clothes washing, otherwise all clothes washers
[[Page 13898]]
would need such cycles. (BSH, No. 17 at p. 2).
ALS opposes DOE's proposed definition of self-clean mode as being
part of active mode, and commented that DOE should not propose an
energy test measurement without consumer use data to support it. (ALS,
No. 10 at p. 1) ALS stated that self-clean cycles should not be added
to the test procedure until there is reliable consumer data and an
understanding of the energy consumed in self-clean cycles. ALS also
stated that the test burden on manufacturers outweighs the public
benefit at this time. (ALS, No. 10 at p. 3).
China does not support DOE's proposal to include self-clean mode in
the test procedure. China commented that self-clean functions reduce
bacteria and mildew that may harm the user, and thus are significant
for health reasons. China stated that if self-clean mode were included
in the test procedure, manufacturers might reduce the temperature or
shorten the cycle time of a self-clean cycle to improve energy
performance, which would be detrimental to consumers. China also
expressed concern that this standard would lead to differences in
energy consumption between units with and without self-cleaning
functions, and stated that such distinct types of clothes washers
should not be subject to the same energy standard. China noted that, as
DOE proposed, self-clean mode represents a very short use time of only
16 hours per year, or 1.3 hours per month. Because of this minimal use
time, China recommends not including the energy and water consumption
during a self-clean cycle in the test procedure. (China, No. 19 at p.
3).
GE commented that it does not disagree with DOE's assumption of 12
self-clean cycles per year, but stated that consumers would be
dissatisfied to have to use this feature monthly. GE expects that
manufacturers will be working to reduce the required number of self-
clean cycles per year. GE suggested that DOE use the manufacturer's
recommendation for the number of self-clean cycles. (GE, Public Meeting
Transcript, No. 20 at pp. 77-78, 107).
In reviewing these comments, DOE recognizes a lack of consensus
regarding whether a self-clean mode is uniquely associated with a
dedicated feature provided on a clothes washer, or whether self-clean
mode may describe a consumer-initiated function associated with a
normal wash cycle. DOE recognizes that a cleaning or deodorizing action
in the clothes container may be achieved in either case, but that it is
not clear whether such a cycle would be differentiable from a normal
wash cycle in the event that a self-clean feature is not provided. In
addition, DOE lacks information on the consumer usage of self-clean
features or typical cycles run solely for self-clean purposes,
including whether consumer usage reflects manufacturer recommendations.
In light of this uncertainty, and considering that the annual energy
use associated with self-clean mode would be relatively small, DOE has
determined for today's final rule that self-clean mode should not be
addressed in the amended test procedure. Therefore, DOE is not adopting
a definition for a self-clean cycle, and is not adding any provisions
to the test procedure for measuring self-clean energy and water
consumption. In addition, today's final rule adds a clarifying
statement that the energy test cycle shall not include any cycle, if
available, that is dedicated for cleaning, deodorizing, or sanitizing
the clothes washer, and is separate from clothes washing cycles.
Standby Mode
In the September 2010 NOPR, DOE proposed to define standby mode as
any mode in which the clothes washer is connected to a main power
source and offers one or more of the following user-oriented or
protective functions, which may persist for an indefinite time: (a) To
facilitate the activation of other modes (including activation or
deactivation of active mode) by remote switch (including remote
control), internal sensor, or timer; (b) continuous functions,
including information or status displays (including clocks) and sensor-
based functions.
DOE proposed an additional clarification that a timer should be
considered a continuous clock function (which may be associated with a
display) that provides regular scheduled tasks (e.g., switching) and
that operates on a continuous basis. This proposed definition was
developed based on the definition provided in IEC Standard 62301 FDIS.
As proposed, the definition of standby mode allowed for multiple
modes to be considered a standby mode. DOE had identified only one mode
that would be considered a standby mode under the proposed definition.
DOE proposed to define ``inactive mode'' as a standby mode that
facilitates the activation of active mode by remote switch (including
remote control), internal sensor, or timer, or that provides continuous
status display. Although it identified only this one particular standby
mode, DOE remained open to consideration of additional standby modes.
DOE retained this definition of standby mode in the August 2011 SNOPR.
ALS supported DOE's proposal for inactive mode to be the only
standby mode. ALS also stated that it is unaware of any modes for
clothes washers that represent significant energy use, other than those
proposed by DOE. (ALS, No. 10 at p. 1) AHAM commented that it does not
support the inclusion of one-way remote control energy in the
definition of standby mode. According to AHAM, standard remote controls
power down products rather than powering them off, such that the
product can be turned on again through use of the remote. AHAM
contrasted that to one-way remote controls, which turn a product off
completely, such that it cannot be turned on again through use of the
remote control. AHAM stated that one-way remote controls should be
included under the definition of off mode to encourage manufacturers to
design products with this feature, which could result in decreased
energy use. (AHAM, No. 14 at p. 5).
Whirlpool stated that the test burden for inactive mode testing is
significant (approximately an 8 percent increase) with virtually no
consumer benefit. (Whirlpool, No. 13 at p. 4).
DOE notes that the definition of standby mode proposed in the
September 2010 NOPR states that standby mode includes user-oriented or
protective functions to facilitate the activation of other modes
(including activation or deactivation of active mode) by remote switch
(including remote control), internal sensor, or timer. If the clothes
washer is consuming energy to power an infrared sensor used to receive
signals from a remote control (while not operating in the active mode),
such a function would be considered part of standby mode, regardless of
whether the remote is classified as ``one-way'' or ``two-way.''
However, if a ``one-way'' remote control powers down the clothes
washer, including turning off any infrared sensors to receive signals
from a remote control, the unit would transition to off mode once it is
powered down, if no other standby mode functions within the clothes
washer are energized. Depending on whether the unit is capable of
operating in both a standby mode and off mode or just the off mode, the
annual hours associated with standby and off modes would be allocated
accordingly.
In today's final rule, DOE retains the definitions of standby mode
and inactive mode as proposed in the September 2010 NOPR and August
2011 SNOPR. Section III.B.7 provides further details on the test method
for standby
[[Page 13899]]
mode adopted in the revised test procedure. As described further in
section III.G.1, DOE believes that by adopting the ``alternate
approach'' for measuring standby and off mode power, this final rule
will not impose significant additional test burden on manufacturers.
Off Mode
DOE proposed in the September 2010 NOPR to define ``off mode'' as
any mode in which the clothes washer is connected to a mains power
source and is not providing any standby mode or active mode function,
and the mode may persist for an indefinite time. An indicator that only
shows the user that the product is in the off position would be
included within the proposed off mode classification. This definition
was developed based on the definitions provided in IEC Standard 62301
FDIS. DOE retained this definition of off mode in the August 2011
SNOPR.
Under the definitions proposed in the September 2010 NOPR, a
clothes washer equipped with a mechanical on/off switch that can
disconnect power to the display and/or control components would be
considered as operating in the off mode when the switch is in the
``off'' position, provided that no other standby or active mode
functions are energized. An energized light-emitting diode (LED) or
other indicator that shows the user only that the product is in the off
position would be considered part of off mode under the proposed
definition, provided that no other standby or active mode functions are
energized.
Other than those comments addressed in the August 2011 SNOPR, DOE
did not receive any additional comments on the proposed definition of
off mode. Therefore, for the reasons stated above and in the August
2011 SNOPR, DOE adopts this definition for the amended clothes washer
test procedure in this final rule.
Network Mode
DOE noted in the September 2010 NOPR that IEC Standard 62301 FDIS
provides definitions for network mode that DOE determined were not
applicable to the clothes washer test procedure. Section 3.7 of IEC
Standard 62301 FDIS defines network mode as a mode category that
includes ``any product modes where the energy using product is
connected to a mains power source and at least one network function is
activated (such as reactivation via network command or network
integrity communication) but where the primary function is not
active.'' IEC Standard 62301 FDIS also provided a note, stating that
``[w]here a network function is provided, but is not active and/or not
connected to a network, then this mode is not applicable. A network
function could become active intermittently according to a fixed
schedule or in response to a network requirement. A `network' in this
context includes communication between two or more separate
independently powered devices or products. A network does not include
one or more controls which are dedicated to a single product. Network
mode may include one or more standby functions.'' DOE did not propose
any amendments to include provisions for testing network mode energy
consumption in clothes washers.
AHAM, ALS, BSH, and Whirlpool stated that network mode should not
be included in the test procedure at this time because no products are
currently available on the market with such a feature. (AHAM, No. 14 at
pp. 5, 11; ALS, No. 10 at p. 3; BSH, No. 17 at pp. 3-4; Whirlpool, No.
13 at p. 2) Whirlpool, AHAM, and NRDC further commented that DOE could
consider network mode by creating a ``placeholder'' for it in the test
procedure, so that when there is sufficient volume of network-capable
clothes washers in the market, this mode could be addressed.
(Whirlpool, Public Meeting Transcript, No. 20 at pp. 42-43, 46; AHAM,
Public Meeting Transcript, No. 20 at pp. 43-44, 109; NRDC, Public
Meeting Transcript, No. 20 at pp. 109-110).
NEEA disagreed with DOE's proposal to not include provisions for
network mode in the test procedure. NEEA stated that, although no
clothes washers currently on the market are capable of this mode, it
has communicated with microprocessor manufacturers who intend to sell
the hardware that would allow such a mode. According to NEEA, informal
estimates in these conversations revealed that network mode could
significantly increase the energy consumption in the inactive mode.
NEEA suggested that DOE define and allow for measuring the energy use
of network mode, as defined in IEC Standard 62301, and recommended that
DOE include network mode under the inactive mode definition. (NEEA, No.
12 at pp. 2, 4, 10; NEEA Public Meeting Transcript, No. 20 at pp. 38-
41, 45-46; NEEA, No. 26 at p. 4) NEEA supports including the
definitions and methodology for network mode energy from IEC Standard
62301 (Second Edition). NEEA also commented that if DOE chooses to
incorporate a network mode definition different from that in IEC
Standard 62301, there could be inconsistencies when the test method
from IEC Standard 62301 is applied using DOE's mode definitions. (NEEA,
Public Meeting Transcript, No. 20 at pp. 22-24; NEEA, No. 26 at p. 9).
The Joint Commenters stated that clothes washers with a network
mode may become common by 2015 when the new standards take effect, and
multiple manufacturers have indicated their plans to introduce these
features. Therefore, the Joint Commenters believe it is important for
the test procedure to capture at a minimum the standby energy
consumption associated with a network mode. The Joint Commenters
further stated that network mode could require power consumption of 2-5
Watts, corresponding to 18-44 kWh per year. According to the Joint
Commenters, if network mode is not captured by the test procedures,
manufacturers will have no incentive to employ lower-power technologies
for this feature. (Joint Commenters, No. 16 at pp. 1-2) The Joint
Commenters and the California Utilities stated that, due to the lack of
sufficient data associated with development of a test method for
network mode, DOE should develop a sufficiently broad definition for
inactive or standby mode to ensure that the standby test method would
capture any energy consumption associated with network functionality,
regardless of whether the product is connected to a network. (Joint
Commenters, No. 16 at p. 2; California Utilities, No. 18 at pp. 1-2;
California Utilities, No. 25 at p. 2).
NRDC commented that the AHAM-ACEEE Agreement on Minimum Federal
Efficiency Standards, Smart Appliances, Federal Incentives and Related
Matters for Specified Appliances \5\ includes an explicit commitment to
recognize network functionality for major appliances in the ENERGY STAR
context, so the test procedure should be prepared to assess whatever
energy consumption is associated with that functionality. (NRDC, Public
Meeting Transcript, No. 20 at pp. 41-42) The California Utilities
further commented that DOE should include the definition of network
mode to harmonize with the IEC Standard, and that it should act swiftly
to issue an amendment to include a test method for network mode when it
becomes aware of clothes washer models with this feature in the
marketplace. The California Utilities expect network mode to become a
regular feature in the future. The California Utilities stated that if
DOE cannot develop a test procedure in this
[[Page 13900]]
rulemaking for products connected to networks, DOE should amend the
test procedure as soon as it becomes aware of commercially available
clothes washer models with this feature. (California Utilities, No. 18
at pp. 1-2; California Utilities, No. 25 at pp. 1-2).
---------------------------------------------------------------------------
\5\ The AHAM-ACEEE Agreement on Minimum Federal Efficiency
Standards, Smart Appliances, Federal Incentives and Related Matters
for Specified Appliances is available at DOE Docket No. EERE-2010-
BT-TP-0021, Comment No. 2.
---------------------------------------------------------------------------
DOE interprets the network mode provisions in IEC Standard 62301
(Second Edition) to be a forward-thinking attempt by the IEC to
anticipate and/or promote technological change by industry. DOE is
unaware, however, of any clothes washers currently on the market with
network mode capabilities as of the date of today's final rule.
Consequently, DOE can not thoroughly evaluate these network mode
provisions, as would be required to justify their incorporation into
DOE's test procedures at this time. DOE notes that although an
individual appliance may consume some small amount of power in network
mode, the potential exists for energy-related benefits that more than
offset this additional power consumption if the appliance can be
controlled by the ``smart grid'' to consume power during non-peak
periods. Although DOE is supportive of efforts to develop smart-grid
and other network-enabled technologies in clothes washers, today's
final rule does not incorporate the network mode provisions due to the
lack of available data that would be required to justify their
inclusion.
Disconnected Mode
DOE noted in the September 2010 NOPR that section 3.9 of IEC
Standard 62301 FDIS provided a definition of ``disconnected mode,''
which is ``the state where all connections to mains power sources of
the energy using product are removed or interrupted.'' IEC Standard
62301 FDIS also added a note that common terms such as ``unplugged'' or
``cut off from mains'' also describe this mode, and that this mode is
not part of the low-power mode category. Since there would be no energy
use in a disconnected mode, DOE did not propose a definition or testing
methods for such a mode.
AHAM agreed with DOE's proposal to not include test procedures for
disconnected mode, because there would be no energy use in this mode.
(AHAM, No. 14 at p. 5).
For the reasons stated in the September 2010 NOPR, DOE is not
adopting a definition or testing methods for disconnected mode in this
final rule.
3. Power Stabilization Criteria and Measurement Methods
In the September 2010 NOPR, DOE proposed to require measurement of
standby mode and off mode power using section 5, paragraph 5.3 of the
First Edition, clarified by requiring the product to stabilize for at
least 30 minutes, and using a measurement period of not less than 10
minutes for cycle finished mode, inactive mode, and off mode. For
instances where the power varies over a cycle, as described in section
5, paragraph 5.3.2 of the First Edition, DOE proposed to require the
use of the average power approach in section 5, paragraph 5.3.2(a).
The Second Edition contains more detailed techniques for evaluating
the stability of the power and measuring the power consumption of loads
with different stability characteristics. In the Second Edition, the
user is given a choice of measurement procedures, including a sampling
method, average reading method, and direct meter reading method. In the
August 2011 SNOPR, DOE evaluated these new methods in terms of test
burden and improvement in results as compared to the methods provided
in the First Edition. Based on this analysis, DOE proposed using the
sampling method for all measurements of standby mode and off mode
power. The following sections provide additional details on each power
stability scenario.
Stable, Non-Cyclic Power
In the September 2010 NOPR, DOE proposed measuring stable, non-
cyclic power by allowing the product to stabilize for at least 30
minutes, followed by a measurement period of at least 10 minutes using
the test procedure specified in section 5, paragraph 5.3.1 of the First
Edition. This method defines stable power as varying less than 5
percent over a 5 minute period. If the load is considered stable, the
power can be recorded directly from the power-measuring instrument at
the end of the measurement period.
In the August 2011 SNOPR, DOE proposed measuring stable, non-cyclic
power by allowing the product sufficient time to reach its low power
state and then following the test procedure for the sampling method
specified in section 5, paragraph 5.3.2 of the Second Edition. The
sampling method requires measuring and recording the power over a
period of at least 15 minutes. Data from the first third of the
measurement period are discarded, and stability is evaluated by a
linear regression through all power readings in the second two-thirds
of the data. If the slope of the linear regression satisfies the
stability criterion, power consumption is calculated as the average of
the power readings during the second two-thirds of the measurement
period. If the slope of the linear regression does not satisfy the
stability criterion, the total period is continuously extended--up to a
maximum of 3 hours--until the stability criterion is satisfied for the
second two-thirds of the data taken over the total period.
In response to the August 2011 SNOPR, NEEA supports DOE's proposal
to require the use of the sampling method for measuring power
consumption in the inactive and off modes. (NEEA, No. 26 at p. 2).
For the reasons stated in the August 2011 SNOPR, DOE specifies the
use of the sampling method in section 5, paragraph 5.3.2 of the Second
Edition for all measurements of standby and off mode power, including
stable, non-cyclic power.
Unstable (Varying), Non-Cyclic Power
In the September 2010 NOPR, DOE proposed measuring unstable
(varying), non-cyclic power by allowing the product to stabilize for at
least 30 minutes, followed by a measurement period of at least 10
minutes using the average power approach described in section 5,
paragraph 5.3.2(a) of the First Edition. The average power approach
requires using an instrument that can measure the true average power
over a period of at least 5 minutes (which DOE proposed to extend to a
minimum of 10 minutes). The average power can be recorded directly from
the power-measuring instrument at the end of the measurement period.
In the August 2011 SNOPR, DOE proposed measuring unstable
(varying), non-cyclic power by allowing the product sufficient time to
reach its low power state and then following the test procedure for the
sampling method specified in section 5, paragraph 5.3.2 of the Second
Edition. Using the sampling method, for modes that are known to be non-
cyclic and unstable (varying), the test period must be long enough so
that the cumulative average of all data points taken during the second
two thirds of the total period fall within a band of 0.2%.\6\ When testing such modes, the total period must be at
least 60 minutes.
---------------------------------------------------------------------------
\6\ DOE interprets this provision as follows: The cumulative
average is the mean of all data points up to and including the most
recent data point. Each data point collected has a cumulative
average associated with it, and the variation of those averages must
remain within the given band.
---------------------------------------------------------------------------
For the reasons stated in the August 2011 SNOPR, DOE specifies the
use of the sampling method in section 5, paragraph 5.3.2 of the Second
Edition for all measurements of standby and off mode power, including
unstable (varying), non-cyclic power.
[[Page 13901]]
Cyclic Power
In the September 2010 NOPR, DOE proposed measuring cyclic power by
allowing the product to stabilize for at least 30 minutes, followed by
a measurement period of at least 10 minutes using the average power
approach described in section 5, paragraph 5.3.2(a) of the First
Edition. The average power approach requires using an instrument that
can measure the true average power over a period of at least 5 minutes
(which DOE proposed to extend to a minimum of 10 minutes). The average
power can be recorded directly from the power-measuring instrument at
the end of the measurement period. For cyclic power, section 5.3.2(a)
specifies that the test period shall be one or more complete cycles to
get a representative average value.
In response to the September 2010 NOPR, NEEA commented that DOE
should refer to the relevant sections of IEC Standard 62301 rather than
try to simplify the language in section 3.11 of appendix J2, which
could be potentially misleading or confusing. NEEA described a
potential conflict between the language in DOE's proposed Section 3.11
of appendix J2 and that in the referenced IEC Standard 62301 test
procedure: In the case of cycle finished mode, which often may involve
more than just a display, cyclic power consumption may persist for a
limited duration, which would require using the ``sampling approach''
for power measurement rather than the ``average power approach'' as
proposed in section 3.11.2 of appendix J2. (NEEA, No. 12 at pp. 3-4)
NEEA also stated that IEC Standard 62301 CDV specifications for a
longer 30-minute stabilization period are superior to the shorter 10-
minute period specified in the FDIS version. In addition, NEEA believes
that if cyclic power changes are discovered during the stabilization
period, the power measurement period should extend for at least four
cycles or one hour, whichever is longer, noting that the sampling
method in Section 5.3.1 of the IEC Standard 62301 FDIS calls for
measurement over a minimum of four cycles in such circumstances. (NEEA,
No.12 at p. 6).
In the August 2011 SNOPR, DOE proposed measuring cyclic power by
allowing the product sufficient time to reach its low power state and
then following the test procedure for the sampling method specified in
section 5, paragraph 5.3.2 of the Second Edition. For cyclic power
modes, the sampling method requires a measurement period of at least
four complete cycles (for a total of at least 40 minutes), divided into
two comparison periods. Stability is established by dividing the
difference in average power measured in each comparison period by the
time difference of the mid-point of each comparison period. This
``slope'' must satisfy the specified stability criterion. If the
appropriate stability criterion is not satisfied, additional cycles are
added to each comparison period until stability is achieved. Once
stability has been achieved, the power is calculated as the average of
all readings from both comparison periods.
As described in the August 2011 SNOPR, DOE believes that the
methodology for measuring cyclic power in the Second Edition produces
an improved measurement over the methodology from the First Edition.
DOE received no comments on this issue in response to the proposal
in the August 2011 SNOPR. Therefore, for the reasons specified in the
August 2011 SNOPR, DOE specifies the use of the sampling method in
section 5, paragraph 5.3.2 of the Second Edition for all measurements
of standby and off mode power, including cyclic power.
4. Use of Default Settings
In the September 2010 NOPR, DOE proposed that the clothes washer be
installed according to the manufacturer's instructions, but did not
propose additional provisions to require the use of default settings
for testing standby energy consumption because it did not have
information regarding the likelihood that consumers will alter the
default display settings.
In the August 2011 SNOPR, DOE proposed incorporating by reference
the installation instructions in section 5, paragraph 5.2 of the Second
Edition. The Second Edition adds certain clarifications to the
installation and setup procedures in section 5, paragraph 5.2 of the
First Edition. The First Edition required that the product be installed
in accordance with the manufacturer's instructions, except if those
instructions conflict with the requirements of the standard, and that
if no instructions are given, the factory or default settings must be
used. The Second Edition adds provisions regarding products equipped
with battery recharging circuits, as well as instructions for testing
each relevant configuration option identified in the product's
instructions for use. DOE is not aware of any clothes washers with a
battery recharging circuit. DOE agreed with commenters that testing a
clothes washer for standby mode energy use at the default setting, or
as-shipped if a default setting is not indicated, would ensure
consistency of results from test to test and among test laboratories.
NEEA supported DOE's proposal to disregard the portions of the
installation instructions in section 5, paragraph 5.2 of IEC Standard
62301 that are not appropriate for the clothes washer test procedure;
i.e., those pertaining to batteries and the determination,
classification, and testing of relevant modes. (NEEA, No. 26 at p. 2).
For the reasons stated in the August 2011 SNOPR, DOE adopts
language in this final rule to disregard the provisions of paragraph
5.2 regarding batteries and, as described in section III.B.2, the
provisions regarding the determination, classification, and testing of
relevant modes. This final rule incorporates by reference, with
qualification as discussed above, the installation instructions in
section 5, paragraph 5.2 of the Second Edition.
5. Test Room Ambient Temperature Conditions for Standby Power Testing
DOE proposed in the September 2010 NOPR that test room ambient
temperatures for standby mode and off mode testing be specified
according to section 4, paragraph 4.2 of IEC Standard 62301 (First
Edition). The current DOE test procedure includes a test room ambient
air specification of 75 5 [deg]F, for water-heating
clothes washers only. This specification is narrower than the range
specified by IEC Standard 62301 of 73.4 9 [deg]F. The
September 2010 NOPR proposal would require manufacturers of water-
heating clothes washers to use the more stringent ambient temperature
range in the current DOE test procedure if all active mode, standby
mode, and off mode testing is conducted simultaneously in the same test
room on multiple clothes washers. Alternatively, the temperature
specifications in IEC Standard 62301 would allow a manufacturer that
opts to conduct standby and off mode testing separately from active
mode testing more latitude in maintaining ambient conditions. The test
room ambient conditions specified in IEC Standard 62301 (Second
Edition) are identical to those specified in the First Edition.
BSH and NEEA support DOE's proposals regarding test room ambient
temperature range. (BSH, No. 17 at p. 3; NEEA, No. 12 at p. 6) AHAM,
ALS, and Whirlpool support using 75 5 [deg]F as the test
room ambient temperature. (AHAM, No. 14 at p. 7; ALS, No. 10 at p. 2;
Whirlpool, No. 13 at p. 3) Whirlpool and AHAM believe that this
requirement should apply to all clothes washer products, not just those
that include water-heating capability, because ambient temperature
[[Page 13902]]
significantly impacts test procedure results and should be consistent
across all machines. Whirlpool and AHAM stated that this tighter
tolerance will help drive consistency, repeatability and
reproducibility across machines and laboratories. (Whirlpool, No. 13 at
p. 3; AHAM, No. 14 at p. 7; AHAM, Public Meeting Transcript, No. 20 at
p. 58) AHAM commented further that should DOE proceed with its proposal
for water-heating clothes washers only, it does not support allowing
the use of the less stringent IEC range (73 9 [deg]F)
because the more stringent DOE range (75 5 [deg]F) falls
within the IEC range. Thus, there is no added test burden when the more
stringent DOE range is used for testing standby and off modes. (AHAM,
No. 14 at p. 7).
Whirlpool and AHAM commented that there appears to be some
inconsistency between DOE's proposal and the proposed language from
section 2.11.2 in appendix J2, as to whether DOE is proposing to allow
use of the more stringent or less stringent ambient temperature range.
It appears to Whirlpool and AHAM, based on the proposed language in
section 2.11.2, that DOE's intent is to allow use of the less stringent
IEC Standard 62301, First Edition ambient air temperature conditions of
73 9 [deg]F for measurement of standby, off, delay start,
and cycle finished mode testing. (Whirlpool, No. 13 at p. 3; AHAM, No.
14 at p. 6) AHAM commented that DOE should reference IEC Standard 62301
Second Edition, FDIS version rather than the First Edition. (AHAM, No.
14 at p. 6).
After considering comments from interested parties, DOE has
determined that the same ambient test room temperature requirement
should apply to all clothes washer products, not just those that
include water-heating capability. Because the temperature of the
internal clothes washer components will be the same as the ambient room
air temperature at the start of a test, maintaining the same ambient
test room temperature would ensure that any heat loss from water in the
machine during the test would be factored into the measured energy and
water use in a consistent manner across all machines, both water-
heating and non-water-heating. DOE also concurs with some commenters
that the more stringent temperature range of 75 5 [deg]F
will produce more accurate, repeatable, and reproducible results
compared to the 73 9 [deg]F range. DOE also notes that the
current test procedure requires a temperature range of 75
5 [deg]F for active mode testing. Therefore, performing standby and off
mode testing at 75 5 [deg]F should not result in any
additional test burden for manufacturers. For these reasons, today's
final rule includes a test room ambient temperature specification of 75
5 [deg]F for both water-heating and non-water heating
clothes washers. The amended test procedure does not adopt the test
room ambient temperature range specified in IEC Standard 62031 (Second
Edition) for standby and off mode testing.
6. Power Supply and Power Measuring Instruments
In the August 2011 SNOPR, DOE proposed to incorporate by reference
the power supply and power-measuring instrument specifications in
section 4, paragraphs 4.3 and 4.4 of the Second Edition. Specifically,
paragraph 4.3.2 requires that the value of the harmonic content \7\ of
the voltage supply be recorded during the test and reported. Paragraph
4.4.1 requires the crest factor and maximum current ratio (MCR) to be
determined. The value of MCR determines the maximum permitted
uncertainty for the power measurement. Paragraph 4.4.3 requires the
instrument to be capable of measuring the average power or integrated
total energy consumption over any operator-selected time interval.
---------------------------------------------------------------------------
\7\ As defined in the Second Edition, harmonic content (or total
harmonic content) is equivalent to total harmonic distortion (on an
amplitude, not power, basis; i.e., using the square root of the
squares of the RMS voltages of the harmonics in the numerator).
---------------------------------------------------------------------------
As described in the August 2011 SNOPR, DOE believes that the test
burden associated with the additional measurements and calculations in
the Second Edition is offset by the more reasonable requirements for
testing equipment, while maintaining acceptable measurement accuracy.
DOE also proposed in the August 2011 SNOPR for it to be acceptable to
measure the total harmonic content, crest factor, and MCR before and
after the actual test measurement if the power-measuring instrument is
unable to perform these measurements during the actual test
measurement.
AHAM, ALS, Whirlpool, and NEEA support DOE's proposed
interpretation to allow measurement of the total harmonic content,
crest factor, and maximum current ratio before and after the actual
test measurement if the power-measuring instrument is unable to perform
these measurements during the actual test measurement. (AHAM, No. 24 at
p. 2; ALS, No. 22 at p. 1; NEEA, No. 26 at p. 2; Whirlpool, No. 27 at
p. 1) Whirlpool added that individual manufacturers should decide
whether to measure these parameters during the test, and that measuring
the power parameters during the test would require some manufacturers
to purchase new test equipment. Whirlpool believes that such economic
burden should not be placed on manufacturers where an appropriate
alternative exists. Whirlpool also commented that these test provisions
should not be applicable until the effective date of appendix J2.
(Whirlpool, No. 27 at p. 1).
DOE noted in the August 2011 SNOPR that performing the continuous
linear regression analysis required by the sampling method in the
Second Edition may require the use of data acquisition software with
the capability of performing real-time data analysis. DOE requested
comment on the potential test burden for a laboratory that would be
required to upgrade its data acquisition system software to enable
real-time data analysis capabilities.
AHAM stated that few laboratories currently have the real-time
statistical analysis capabilities that DOE believed would be required
to perform the continuous linear regression analysis of the stable,
non-cyclic power test. AHAM added that several laboratories will need
to invest both time and money to add a real-time statistical analysis
capability to their data acquisition systems. AHAM further stated that
updating data acquisition systems to enable real-time statistical
analysis capabilities will require a significant upgrade. Whirlpool
opposes the requirement to perform real-time statistical analysis
because that such a requirement could require a significant capital
investment by manufacturers. In addition, Whirlpool stated that the
phrase ``real-time statistical analysis'' is vague and would require
clarification if it were to be implemented. ALS stated that it has
already equipped its lab to measure standby power per IEC Standard
62301 (First Edition) and understands that only a minimal software
update expense would be needed to comply with the Second Edition.
(AHAM, No. 24 at p. 2; ALS, No. 22 at p. 1; Whirlpool, No. 27 at p. 1).
After further testing and examination of the sampling method
described in the Second Edition, DOE has determined that the analyses
required by the sampling method could be performed without the need for
real-time data analysis software. For example, a laboratory could
acquire data for a discreet period of time and determine afterward
whether the data satisfied the appropriate stability criteria. If these
criteria were not satisfied, the laboratory could resume testing for a
longer discrete period of time, followed by analysis of the data, and
so on, until the
[[Page 13903]]
stability criteria are satisfied. Therefore, a manufacturer or test
laboratory could conduct standby and off mode testing using the
sampling method in the Second Edition without being required to upgrade
its software with real-time data analysis capabilities. DOE notes,
however, that having such real-time data analysis capabilities would
facilitate this testing.
In today's final rule, DOE specifies the use of the power supply
and power-measuring instrument specifications in section 4, paragraphs
4.3.2 and 4.4 of the Second Edition. The amended test procedure also
includes notes in section 2.2.2 (supply voltage waveform) and section
2.5.3 (power meter) stating that if the power-measuring instrument used
for testing is unable to measure the total harmonic content, crest
factor, power factor, or maximum current ratio during the measurement
period, it is acceptable to measure and record these properties
immediately before and after the test measurement period.
7. Calculation of Energy Consumption in Each Mode
In the September 2010 NOPR, DOE proposed two possible approaches
for measuring energy consumption in modes other than active washing
mode; i.e., inactive (standby) mode, off mode, delay start mode, and
cycle finished mode \8\ (hereafter, collectively referred to as low-
power modes). For the first approach, DOE proposed allocating 295 hours
per year to the active washing mode, 16 hours to self-clean mode (if
applicable), 25 hours per year to delay start mode (if applicable), 15
hours per year to cycle finished mode (if applicable), and the
remainder to off and/or inactive mode. Using this approach, the energy
use per cycle associated with inactive, off, delay start, and cycle
finished modes would be calculated by (1) calculating the product of
wattage and allocated hours for all possible inactive, off, delay start
and cycle finished modes; (2) summing the results; (3) dividing the sum
by 1,000 to convert from Wh to kWh; and (4) dividing by the proposed
295 use cycles per year. For clothes washers with electronic controls
and a mechanical on/off switch, DOE proposed to allocate half of the
inactive/off mode hours each to inactive and off modes.
---------------------------------------------------------------------------
\8\ Self-clean mode, delay start mode, and cycle finished mode
are considered part of the active mode.
---------------------------------------------------------------------------
For the second ``alternate approach,'' for the purpose of
calculating the total energy consumed in all low-power modes, DOE
proposed allocating all the hours not associated with active washing
mode to the inactive and off modes and then measuring power consumption
for the inactive and off modes. Using this approach, separate
measurements of delay start and cycle finished mode energy consumption
would not be required. This approach would allocate one hour to each
active mode cycle, for a total of 295 active mode hours and 8,465
inactive/off mode hours. For clothes washers with electronic controls
and a mechanical on/off switch, half of the inactive/off mode hours
would be allocated each to inactive and off modes. DOE proposed using
the alternate approach in the August 2011 SNOPR.
ALS commented that it supports DOE's proposal to allocate one hour
to each active mode cycle. ALS also supports DOE's proposal to allocate
half of the inactive/off hours each to inactive and off modes, for
machines with electronic controls plus a mechanical on/off switch.
(ALS, No. 10 at p. 2).
The Joint Commenters and ASAP support allocating a portion of the
inactive/off hours to off mode for clothes washers with a mechanical
on/off switch because of the potential energy-saving benefits that
allow the consumer to reduce the energy consumption of the washer when
not in use. The Joint Commenters and ASAP are concerned, however, about
the lack of a specification regarding where the switch must be placed
on the machine in order to receive credit. For example, a manufacturer
could place a switch in a hidden location such as the back of the
machine, where it would obviously not be intended for consumer use.
(Joint Commenters, No. 16 at p. 4; ASAP, Public Meeting Transcript, No.
20 at p. 82) The Joint Commenters encourage DOE to specify that the
switch must be placed on the front panel of the machine in order for
half of the inactive/off mode hours to be allocated to off mode. (Joint
Commenters, No. 16 at p. 4).
NEEA supports DOE's proposed alternate approach, with the caveat
that delay start and cycle finished modes should be measured and
included as part of the active wash mode. NEEA does not support DOE's
proposal for using a one-hour average cycle time to determine annual
active wash mode hours. NEEA stated that DOE's estimate, which was
based on the behavior of a very limited sample of clothes washers,
characterizes the behavior and energy use of the ``average'' clothes
washer available in the market today, rather than measuring the actual
performance of individual models. NEEA stated that the active washing
mode hours should be based on the test results of the individual
clothes washer model being tested. NEEA further commented that the
energy use calculation could be greatly simplified if the calculation
simply involved ``active mode'' and ``inactive mode hours,'' as
measured for each model tested. Furthermore, NEEA does not support
DOE's proposal to create a new class of modes called ``low-power
modes,'' and stated that delay start and cycle finished modes should
only be considered part of active mode and/or active washing mode.
(NEEA, No. 12 at pp. 6-7; NEEA, No. 26 at pp. 2, 4, 6).
Whirlpool commented that it does not support DOE's proposal to
split the non-active mode hours in half between inactive and off modes
for washers with a mechanical or hard on/off switch. Whirlpool stated
that such a device would add little benefit compared to its additional
cost. Further, consumers are unlikely to utilize such a device unless
it automatically defaults to the ``off'' mode at the end of each cycle
(requiring the consumer to turn it to ``on'' for each new cycle
initiated). According to Whirlpool, such an approach would be an
annoyance to consumers and would cause consumers to postpone
replacement purchases, thereby negating or delaying the resultant
energy savings. Whirlpool stated that for any washer with a mechanical
on/off switch, all of the non-active hours should be allocated to
inactive mode. (Whirlpool, No. 13 at p. 4).
AHAM commented that it does not oppose using the estimate of one
hour per cycle because it would be too burdensome and complicated to
determine a more refined number, and there would be little
corresponding benefit in accuracy. (AHAM, No. 14 at p. 7) AHAM also
commented that it does not oppose DOE's proposal to allocate half of
the inactive/off hours each to inactive and off modes for clothes
washers with electronic controls plus a mechanical on/off switch. AHAM
proposed that DOE add a requirement that the on/off switch must be
accessible by the consumer, because a switch that is hidden such that
the consumer might never find or use it should not be given this
``credit.'' AHAM further commented that this does not mean that DOE
should specify product design by dictating where the switch should be
placed on the machine. Furthermore, AHAM stated that there may be
situations that warrant allocating all of the inactive/off hours to off
mode; for example, there are machines that electronically turn off
certain modes at the end of the active wash cycle and require the
consumer to manually turn that mode back on to use it. (AHAM, No. 14 at
p. 8).
[[Page 13904]]
DOE based its proposal to adopt an estimate of one hour per active
mode wash cycle on the test data available. DOE concurs with AHAM's
comment that performing additional testing to determine a more refined
number would be too burdensome and complicated, with little
corresponding benefit in overall accuracy. Basing the active washing
mode hours on test results of the individual clothes washer model being
tested would not be feasible because the energy test cycle includes
numerous different wash cycles, each with a different cycle time.
Calculating the average cycle time across all cycles for an individual
washer would increase test burden with little or no corresponding
increase in the accuracy of the results. Therefore, today's final rule
allocates one hour to each active mode cycle, with 8,465 hours
allocated to all other non-active mode cycles.
As described previously in section III.B.2, DOE adopts the
``alternate approach,'' in today's final rule, in which all low-power
modes are allocated to the inactive and off modes, depending on which
of these modes is present. The aggregate power of the low-power modes
is represented by a single energy metric called ``combined low-power
mode.'' DOE's analysis indicates that the assumption that the power in
each low-power mode is similar, which DOE set forth in the September
2010 NOPR, remains valid, and that measuring the power of each mode
separately would introduce significant test burden without a
corresponding improvement in a representative measure of annual energy
use.
Regarding the allocation of hours between inactive mode and off
mode, the proposed definition of off mode as applied to residential
clothes washers will primarily apply to units with mechanical controls.
The proposed definition of inactive mode will primarily apply to units
with electronic controls, in which reactivation of the clothes washer
occurs through a pushbutton sensor, touch sensor, or other similar
device that consumes power. DOE is not aware of any clothes washers on
the market with electronic controls and an additional mechanical on/off
switch. However, DOE believes that the test procedure should
accommodate this option because of the potential energy-saving benefits
provided by a mechanical on/off switch. DOE further notes that for
units with all hours allocated to either inactive or off mode, the
power measurement procedure and calculation of low-power mode energy
consumption are identical. For these reasons, DOE adopts the proposal
in the August 2011 SNOPR, which allocates 8,465 hours to off mode if no
inactive mode is possible, 8,465 hours to inactive mode if no off mode
is possible, and 4,232.5 hours to both inactive mode and off mode if
both modes are possible.
DOE believes that manufacturers would be unlikely to install a
mechanical on/off switch in an inaccessible location, because such a
device would add little consumer benefit compared to its additional
cost to the manufacturer. Therefore, today's final rule does address
the location for an on/off switch.
8. Integrated Modified Energy Factor (IMEF)
The DOE test procedure for clothes washers currently provides a
calculation for modified energy factor (MEF), which equals the clothes
container capacity in cubic feet divided by the sum, expressed in kWh,
of (1) the total weighted per-cycle hot water energy consumption, (2)
the total weighted per-cycle machine electrical energy consumption, and
(3) the per-cycle energy consumption for removing the remaining
moisture from a test load. (See section 4.4 of appendix J1). The
current Federal energy conservation standards for clothes washers are
expressed in MEF. (10 CFR 430.32(g)(3))
As described previously in section I.C, EISA 2007 amended EPCA to
require DOE to amend its test procedures for all covered products to
integrate measures of standby mode and off mode energy consumption into
the overall energy efficiency, energy consumption, or other energy
descriptor unless the current test procedure already incorporates
standby and off mode energy consumption, or such integration is
technically infeasible.
In the September 2010 NOPR, DOE proposed to establish an
``integrated modified energy factor'' (IMEF) for residential clothes
washers. DOE proposed to calculate IMEF as the clothes container
capacity in cubic feet divided by the sum, expressed in kWh, of:
The total weighted per-cycle hot water energy
consumption;
The total weighted per-cycle machine electrical energy
consumption;
The per-cycle energy consumption for removing moisture
from a test load;
The per-cycle standby, off, delay start, and cycle
finished mode energy consumption; and
The per-cycle self-clean mode energy consumption, as
applicable.
In the August 2011 SNOPR, DOE proposed not to allocate the hours
for delay start and cycle finished modes to the inactive and off modes,
and not require separate measurements for delay start and cycle
finished mode energy consumption. Therefore, DOE modified the proposed
IMEF calculation by incorporating per-cycle combined low-power mode
energy consumption instead of separate measurements of per-cycle
standby, off, delay start and cycle finished mode energy consumption.
NEEA and the California Utilities support the IMEF calculation
proposed in the September 2010 NOPR. (NEEA, No. 12 at p. 8; California
Utilities, No. 18 at p. 2) The California Utilities further commented
that although the low-power modes represent a relatively small portion
of annual energy and water use, they should be measured in the test
procedure because these loads will become an increasingly significant
portion of overall energy use as clothes washers and other appliances
make efficiency gains in their primary active mode. (California
Utilities, No. 18 at p. 2).
ALS opposes the IMEF calculation proposed in the September 2010
NOPR, which separates out per-cycle standby, off, delay start, and
cycle finished mode energy consumption. ALS noted that there is little
public benefit to including these modes, and that DOE has no reliable
consumer use data on which to base the calculations. ALS stated there
is no need for a new IMEF metric. (ALS, No. 10 at p. 2).
AHAM also objected to the new IMEF measure of energy consumption
due to the significant time, resource, and cost impacts associated with
it. AHAM also stated that the added test burden provides no
corresponding public benefit. (AHAM, No. 14 at p. 8).
NRDC questioned DOE's decision to retain a metric based on a per-
cycle measure rather than an annual metric, such as for dishwashers.
(NRDC, Public Meeting Transcript, No. 20 at pp. 91-92).
DOE determined in the September 2010 NOPR that it is technically
feasible to integrate standby mode and off mode energy consumption into
the overall energy consumption metric for clothes washers, which for
the current energy conservation standards is based on the per-cycle
MEF.
The current test procedure does not provide an additional energy
descriptor for annual energy consumption. Any new descriptor for annual
energy consumption would be based on the same per-cycle energy use
measurements from which MEF or IMEF is calculated, multiplied by the
number of annual use cycles; therefore, an annual energy use metric
incorporating standby and off mode energy use would
[[Page 13905]]
not be inherently more accurate or representative than MEF or IMEF. The
analogous change from a per-cycle metric to annual energy use for the
energy conservation standards for dishwashers was required by Congress
in the provisions of EISA 2007.
As described in section III.B.2.d, this final rule does not adopt a
definition for a self-clean cycle and is not adding any provisions to
the test procedure for measuring the energy and water consumption of a
self-clean cycle. Today's final rule also implements the alternate
approach for measuring energy consumption in low-power modes.
Therefore, today's final rule calculates IMEF as the clothes container
capacity in cubic feet divided by the sum, expressed in kWh, of:
The total weighted per-cycle hot water energy
consumption;
The total weighted per-cycle machine electrical energy
consumption;
The per-cycle energy consumption for removing moisture
from a test load; and
The per-cycle combined low-power mode energy
consumption.
C. Active Mode Test Procedure Provisions
1. Integrated Water Consumption Factor (IWF)
The existing calculation of water factor (WF) in the appendix J1
test procedure accounts only for the water consumed during the cold
wash/cold rinse cycle. Hot water consumption is measured for all wash
cycles, including warm, hot, and extra-hot washes, but it is used only
to determine the energy needed to heat the water. If the cold wash
water consumption is set disproportionately low, while more water is
used at higher temperatures, the WF metric may not accurately reflect
the average water consumption of the machine.
In the September 2010 NOPR, DOE proposed a new water consumption
metric, integrated water consumption factor (IWF). This proposed metric
would account for both the hot and cold water consumption of each test
cycle, including any steam or self-clean cycles. As proposed, IWF would
equal the sum of the total weighted per-cycle water consumption for all
wash cycles and the per-cycle self-clean water consumption, divided by
the clothes container volume. As proposed, the total weighted per-cycle
water consumption for all wash cycles would be calculated as the TUF-
weighted sum of the total per-cycle water consumption for each test
cycle.
In the August 2011 SNOPR, DOE proposed a correction to the
calculation for per-cycle self-clean water consumption. The proposed
calculations in the newly-proposed sections 4.1.8 (per-cycle self-clean
hot water energy consumption) and 4.2.14 (total per-cycle self-clean
water consumption) did not contain the numeric multipliers required to
apportion the total annual self-clean water consumption over the 295
representative average number of clothes washer cycles in a year. The
August 2011 SNOPR proposal adjusted the calculations in section 4.1.8
and 4.2.14 by including a multiplier of 12/295, where 12 represents the
average number of clothes washer self-clean cycles in a year, and 295
represents the average number of clothes washer cycles in a year.
ALS, the Joint Commenters, and NEEA expressed support for the
proposal to measure water consumption for all active mode energy test
cycles as part of the IWF metric. NEEA also supported DOE's proposed
use of TUFs and load usage factors to derive the active mode water
consumption. (ALS, No. 10 at p. 4; Joint Commenters, No. 16 at p. 8;
Joint Commenters, No. 23 at p. 5; NEEA, No. 12 at p. 13) AHAM, the
California Utilities, and Whirlpool specifically stated support for the
inclusion in an IWF metric of hot and cold water measurements from all
cycles tested. AHAM and the Joint Commenters noted that those values
are already measured as part of the test procedure, and thus would not
add to test burden. NEEA similarly commented that the proposed
methodology for IWF would not add significant new test burden on
manufacturers. Whirlpool stated that the proposal to include all water
usage would prevent manufacturers from varying the amount of rinse
water used at different temperatures, and that this would justify any
additional test burden. (AHAM, No. 14 at p. 15; California Utilities,
No. 18 at p. 5; Joint Commenters, No. 16 at p. 8; NEEA, No. 12 at p.
13; Whirlpool, No. 13 at p. 13) BSH stated that if the standards are
adjusted appropriately, cold water consumption from all tests can be
used in calculations. (BSH, No. 17 at p. 4) NRDC agreed with the IWF in
concept. (NRDC, Public Meeting Transcript, No. 20 at pp. 182-183) The
California Utilities and NEEA support the inclusion of water use from
self-clean cycles in the IWF measurement. (California Utilities, No. 18
at p. 5; NEEA, No. 12 at p. 13) The Joint Commenters stated that DOE's
proposal would provide a more representative depiction of water
consumption. (Joint Commenters, No. 16 at p. 8).
AHAM, ALS, and Whirlpool do not support including the water use in
self-clean cycles in the IWF metric. AHAM agrees, however, with the
proposed correction to adjust the calculation using a multiplier of 12/
295, if DOE determines that self-clean cycles should be included in the
energy and water calculations. ALS also opposes the inclusion of water
use in steam cycles in IWF. ALS stated that until DOE has a reliable
understanding of the consumer usage and water consumed in self-clean
and steam cycles, it should not include these in the test procedure.
(AHAM, No. 14 at p. 15; AHAM, No. 24 at p. 5; ALS, No. 10 at pp. 4-5;
Whirlpool, No. 13 at p. 13) According to BSH, inclusion of self-clean
and steam cycles in the test procedure would lead to minimal
improvement in IWF but would increase the test burden. (BSH, No. 17 at
p. 3).
As described in sections III.B.2.d, III.C.2.a and III.C.2.b, DOE
did not adopt provisions for measuring the water and energy consumption
of self-clean cycles or steam cycles. In today's final rule, DOE
includes an integrated water factor (IWF) metric that is based on the
total weighted per-cycle water consumption of both hot and cold water
for all wash cycles comprising the energy test cycle. Because these
values are already measured as part of the test procedure, and no new
test equipment would be required to measure these values, manufacturer
test burden would not increase. DOE believes that an IWF defined in
this way provides a more representative measure of total water
consumption for a clothes washer.
2. Technologies Not Covered by the Current Test Procedure
Steam Wash Cycles
DOE is aware of multiple clothes washer models currently available
on the market offering steam functions via pre-set cycles, or as an
optional addition to conventional wash cycles. During these cycles,
steam is injected into the basket, which manufacturers claim provides
enhanced cleaning and/or sterilization. The steam is produced in a
generator that requires a significant amount of energy to heat and
vaporize the water. The current clothes washer test procedure does not
account for energy or water consumption during this type of wash cycle.
In the September 2010 NOPR, DOE proposed amending the test
procedure to include additional measurement of energy and water
consumption during a steam wash cycle for clothes washers offering this
feature. In the proposed amendments, an additional set of steam cycle
tests would be required for clothes washers that offer such a feature.
The
[[Page 13906]]
test sections required for clothes washers without a steam wash cycle
would remain unchanged.
DOE also proposed in the September 2010 NOPR to include the energy
and water consumption from steam wash cycles in the final calculations
for the energy and water use metrics. For clothes washers capable of
steam wash cycles, the measurements of energy and water consumption
from the steam wash cycle with the hottest wash temperature would be
included in the overall energy and water use calculations, based on the
TUF for steam wash. Table 4.1.1 (Temperature Use Factors) of appendix
J1 specifies the current weighting factor applied to the consumption
measurements for the different wash cycles. DOE proposed to update
Table 4.1.1 to include 0.02 as the TUF of a steam wash cycle, when
available. DOE assumed these cycles would decrease the use of extra-hot
cycles, but would leave the use of hot, warm, and cold cycles
unchanged. DOE believed that the steam wash cycles would be selected
somewhat fewer times than the extra hot cycle because on some models
steam is available as an option only on certain settings. DOE therefore
estimated that the 0.02 TUF associated with steam washes would
correspond to a 0.02 decrease in the TUFs associated with extra-hot
cycles, for a steam-capable clothes washer.
The California Utilities, the Joint Commenters, and NEEA expressed
qualified support for DOE's proposal to include the energy and water
use of steam wash cycles in the test procedure, and raised concerns
about the definition of ``steam wash cycle.'' The California Utilities
and NEEA commented that DOE may need to refine the definition of steam
wash cycle for clarity and consistency. The Joint Commenters stated
that the definition of ``steam wash cycle'' should include not only the
injection of ``steam'' (vaporized water) but also any superheated water
injected in the form of mist or fine droplets. The Joint Commenters
also stated that all energy and water use resulting from steam wash
cycles should be accounted for, including any injections made after the
conclusion of the final spin cycle. (California Utilities, No 18 at p.
3; Joint Commenters, No. 16 at p. 3; Joint Commenters, No. 23 at pp. 4-
5; NEEA, No. 12 at p. 9; NEEA, No. 26 at pp. 7-8) NEEA suggested that
DOE gather data on steam cycles to more clearly define what constitutes
a steam cycle. (NEEA, No. 12 at p. 9; NEEA, No. 26 at p. 8).
AHAM, ALS, BSH, and Whirlpool oppose adding measures of the energy
and water consumption of steam wash cycles to the clothes washer test
procedure without sufficient data on consumer usage patterns of such
cycles. (AHAM, No. 14 at p. 9; ALS, No. 10 at p. 3; BSH, No. 17 at p.
3; Whirlpool, No. 13 at p. 5) ALS, BSH, and Whirlpool also oppose the
inclusion of steam wash cycles due to the added manufacturer test
burden, particularly because the energy use in these cycles represents
such a small amount of the total annual energy. Whirlpool commented
that the test burden would increase by about 10 percent. (ALS, No. 10
at p. 3; BSH, No. 17 at p. 3; Whirlpool, No. 13 at p. 5) AHAM and
Whirlpool also noted that DOE does not have data on the percentage of
clothes washers on the market with a steam feature. Whirlpool estimates
that this percentage is likely in the single digits. (AHAM, No. 14 at
p. 9; Whirlpool, No. 13 at p. 5; Whirlpool, Public Meeting Transcript,
No. 20 at pp. 102-103) BSH further opposes the inclusion of steam wash
cycles in the energy and water test methods because the longevity of
these features in the market has yet to be proven. (BSH, No. 17 at p.
3).
GE and LG also commented that DOE needs to clarify the definition
of steam wash cycle. GE suggested modifying the definition of steam
cycle as: ``Steam cycle means a wash cycle in which water is heated to
the point of boiling to produce steam and in which that steam is
injected into the clothes container.'' (GE, Public Meeting Transcript,
No. 20 at p. 104; GE, No. 35 at p. 2; LG, Public Meeting Transcript,
No. 20 at p. 103).
AHAM questioned whether a definition of steam wash cycle would
include a required temperature to which water must be heated for steam
to be generated in the cycle, a representative duration of time for
which steam must be injected into the drum, and a definition of the
term ``injected''. AHAM stated that it would be difficult to define
``steam wash cycle'' in a clear, repeatable, reproducible, and
uniformly applicable way. According to AHAM, without a better
definition of steam wash cycle, there will be confusion among
manufacturers, which will lead to confusion in the market as consumers
attempt to compare products. (AHAM, No. 14 at pp. 9-10) Springboard
Engineering (Springboard) requested clarification as to whether steam
would be tested at the hottest temperature available in the ``normal''
cycle, or whether it would be tested at the hottest temperature
available on any cycle, such as a sanitize cycle. Springboard also
noted that some clothes washers have cycles with wash temperatures
greater than 135[deg]F and steam, and stated that it is not clear how
these cycles should be tested. (Springboard, No. 11 at pp. 2-3).
DOE also received comments in response to the proposed TUF for
steam wash cycles. AHAM, ALS, NEEA, and Whirlpool do not support DOE's
proposed steam wash cycle TUF. AHAM stated that because it does not
support the inclusion of steam wash cycles in the DOE test procedure,
it also opposes the revision of the TUFs to account for steam wash
cycles. AHAM also questioned the assumption that the steam wash cycle
TUF affects only the extra-hot TUF. (AHAM, No. 14 at p. 12) Similarly,
NEEA questioned the basis on which DOE assumed that a steam wash cycle
would mostly or always be associated with a hot wash cycle. According
to NEEA, some consumers use a hot or extra-hot wash to kill dust mites
and other allergens, not just for heavily soiled loads, and it is not
clear whether such users would select a cooler wash cycle with a steam
feature to accomplish the same thing. ALS, NEEA and Whirlpool objected
to DOE's assignment of a TUF for steam wash cycles without supporting
data. (ALS, No. 10 at p. 4; NEEA, No. 12 at p. 9; NEEA, No. 26 at p. 8;
Whirlpool, No. 13 at pp. 5, 8) Whirlpool also stated that the usage of
steam wash cycles is quite limited, since they are specialized cycles
designed for removal of difficult stains. (Whirlpool, No. 13 at pp. 5,
8) Springboard questioned whether there are machines on the market that
have a steam wash cycle but do not have a hot wash cycle. (Springboard,
No. 11 at p. 3).
DOE notes that the implementation of ``steam cycles'' may vary
among manufacturers, and that the proposed definition may lead to
inconsistent interpretations of whether a certain feature constitutes a
``steam cycle'' to be included in the energy test cycle. In addition,
consumer usage of steam features is likely to be low. For these
reasons, DOE does not adopt provisions to measure the energy and water
use in steam wash cycles, and therefore is not amending the TUFs in the
clothes washer test procedure to include a TUF for steam wash cycles
that would occur in place of certain extra-hot wash cycles.
Self-Clean Cycles
DOE is aware that some residential clothes washers currently on the
market offer a self-clean cycle. These cycles are used periodically
with bleach and/or detergent--but no clothes load--to clean, deodorize,
or sanitize the components that come into contact with water by
preventing or eliminating the formation of mold, bacteria, and
[[Page 13907]]
mildew. Self-clean cycles may require higher water temperatures and
greater volumes of water than a normal cycle, and therefore could
potentially consume a substantial amount of energy. The current test
procedure does not account for energy or water consumption attributable
to self-clean cycles.
As described previously in section III.B.2.d, DOE proposed in the
September 2010 NOPR to define a ``self-clean mode'' as a clothes washer
operating mode that:
Is dedicated to cleaning, deodorizing, or sanitizing
the clothes washer by eliminating sources of odor, bacteria, mold,
and mildew;
Is recommended to be run intermittently by the
manufacturer; and
Is separate from clothes washing cycles.
As described in the September 2010 NOPR, DOE observed that
manufacturers typically recommended running a self-clean cycle once a
month. Some manufacturers also recommend a self-clean cycle after a
defined number of clothes washing cycles. Because these self-clean
cycles are not accounted for in the proposed 295 wash cycles per year,
DOE proposed to integrate the energy and water consumption of self-
clean cycles into the overall energy efficiency metrics, under the
assumption that these cycles are typically run once per month.
DOE received comments in response to the proposal to account for
energy and water consumption of self-clean cycles in the overall
calculations for IMEF and IWF, which are discussed in III.B.2.d,
III.B.8, and III.C.1. For the reasons presented in those sections, DOE
is not adopting provisions in today's final rule to include measures of
self-clean energy and water use in the clothes washer test procedure.
Adaptive Control Technologies
Adaptive control technologies can adjust parameters such as
agitation intensity, number of rinses, wash time, and wash and rinse
temperatures based on the size, fabric mix, and soil level of a wash
load. The current test procedure accounts for adaptive fill
technologies, but no other types of adaptive controls.
DOE is aware that other consumer products employ adaptive controls,
and that these are addressed in their respective test procedures. For
example, many dishwashers incorporate adaptive controls by means of a
turbidity sensor which adjusts the number and duration of wash and
rinse cycles. The dishwasher test procedure accounts for these models
through the use of soiled dishware loads. (10 CFR part 430, subpart B,
appendix C).
In the September 2010 NOPR, DOE noted that it was not aware of any
clothes washers available on the market that incorporate adaptive
controls using a turbidity sensor. If clothes washers become available
that offer adaptive controls using a turbidity sensor, DOE could
consider amending the clothes washer test procedure to measure energy
and water consumption with a soiled wash load. However, because it was
not aware of any clothes washers incorporating this technology, DOE did
not propose to address adaptive controls other than adaptive fill
control in the test procedure.
AHAM, BSH, NEEA, and Whirlpool supported DOE's proposal that no
adaptive control provisions other than the existing adaptive fill
control methodology be adopted in the clothes washer test procedure at
this time. (AHAM, No. 14 at p. 11; BSH, No. 17 at p. 4; NEEA, No. 12 at
p. 9; NEEA, No. 26 at pp. 8-9; Whirlpool, No. 13 at p. 6) According to
BSH and Whirlpool, there are currently no clothes washers on the market
with soil-sensing technology. (BSH, No. 17 at p. 4; Whirlpool, No. 13
at p. 6) Whirlpool stated that if a soil-sensing clothes washer were to
exist, it would require some form of sensor, which in turn would
require a soiled test load to activate the sensor and properly record
the energy used (analogous to the test procedure for soil-sensing
dishwashers). According to Whirlpool, DOE would need to develop a
uniform, consistent, repeatable, and reproducible soil load, which
could take 3 or more years. (Whirlpool, No. 13 at p. 6) NEEA agreed
that turbidity sensors for soil-sensing are unlikely to be found in
clothes washers, but the increasing complexity of control capabilities
should not be ignored. NEEA urged DOE to gather enough statistically
valid data to inform a decision on whether to adopt provisions for
measuring adaptive control technologies. NEEA further commented that,
in the absence of information on clothes washer models with adaptive
control technologies other than adaptive fill control, DOE should state
how the presence of such technologies might affect the test procedure
results. (NEEA, No. 12 at pp. 9-10; NEEA, No. 26 at pp. 8-9).
DOE observes that manufacturers representing approximately 65
percent of the U.S. clothes washer market stated that they are unaware
of soil-sensing clothes washers currently available, supporting DOE's
preliminary conclusion. For this reason, DOE is unable to evaluate any
technical approaches towards adaptive control outside of adaptive fill
control, nor can it develop appropriate methodology for evaluating the
energy use of such features. Therefore, DOE is not adopting new
provisions addressing adaptive control technologies in today's final
rule.
Demand Response Technologies
Demand response technology enables an appliance to shift its
activity based on interaction with the electric grid, utilities, or
user programming. Appliances that can communicate with the electric
grid or any other network would be considered to have a network mode as
defined by IEC Standard 62301 Second Edition. As described previously
in section III.B.2.g, the Second Edition defines network mode as a mode
category that includes ``any product modes where the energy using
product is connected to a mains power source and at least one network
function is activated (such as reactivation via network command or
network integrity communication) but where the primary function is not
active.'' IEC Standard 62301 Second Edition also provides a note
stating, ``[w]here a network function is provided but is not active
and/or not connected to a network, then this mode is not applicable. A
network function could become active intermittently according to a
fixed schedule or in response to a network requirement. A `network' in
this context includes communication between two or more separate
independently powered devices or products. A network does not include
one or more controls which are dedicated to a single product. Network
mode may include one or more standby functions.''
As discussed in section III.B.2.g, DOE did not propose in the
September 2010 NOPR to amend the clothes washer test procedure to
include any provisions for measuring energy consumption in network
mode, because it was unaware of any clothes washers currently available
on the market that incorporate a networking function. Additionally, DOE
was unaware of any data regarding network mode in clothes washers that
would enable it to determine appropriate testing procedures and mode
definitions for incorporation into the test procedure.
AHAM commented that there is currently insufficient data regarding
demand response features in clothes washers, but that when these
features become available, DOE should address them in the test
procedure. AHAM noted that it is currently working with energy and
water efficiency advocates to develop a definition of ``smart
appliances,'' including a definition of ``smart'' clothes washers.
(AHAM, No. 14 at p. 11; AHAM, Public Meeting Transcript, No. 20 at p.
109) NEEA
[[Page 13908]]
doubted whether any significant fraction of laundry activities take
place at peak hours, and thus it is skeptical whether households would
shift their laundry schedules in response to time-of-use rates or a
signal from a ``smart grid'' system. Even so, NEEA supported including
provisions for network mode in the clothes washer test procedure for
use when machines with such capabilities appear on the market. (NEEA,
No. 12 at p. 10).
For the reasons stated in the September 2010 NOPR, this final rule
does not incorporate provisions for clothes washers with demand
response technologies. However, DOE is generally supportive of efforts
to develop smart-grid and other network-enabled technologies in clothes
washers. Provisions for testing power consumption in network mode could
be incorporated into the test procedure through future amendments, once
the appropriate data and testing methodologies become available.
3. Consumer Usage Patterns
In the September 2010 NOPR and August 2011 SNOPR, DOE proposed
updating some of the consumer usage patterns contained in the test
procedure. General comments on the proposals are discussed immediately
below, and comments related to the specific consumer usage patterns for
which DOE proposed changes are discussed in the sections that follow.
AHAM commented generally that DOE should gather or develop
information on contemporary laundry practices in the United States for
incorporation into the test procedure, including temperature settings,
average cycles per year, special-purpose machine cycles (such as steam
and self-clean), the size of a minimum laundry load, the size of an
average load, and the frequency distribution of various laundry loads.
(AHAM, No. 2 at p. 23; AHAM, No. 14 at pp. 1-2). EarthJustice and NRDC
support this recommendation. (EarthJustice, No. 3 at p. 1; NRDC, No. 8
at p. 1) Whirlpool stated that a test procedure proposal would not be
valid, meaningful, or representative of consumer practices without data
to validate the underlying assumptions. Whirlpool requests that DOE
accept input from manufacturers and/or initiate primary research
efforts of its own to obtain updated consumer usage data, as necessary.
(Whirlpool, No. 13 at p. 1).
NEEA commented that, because the revised test procedure will not be
required for use before the effective date of any revised efficiency
standards, DOE should take the time now to acquire enough statistically
valid data to properly specify the usage patterns and calculations
within the test procedure. (NEEA, No. 12 at pp. 1, 10, 16) NEEA added
that DOE should consider more systematic efforts to gather field data
in advance of the start of future rulemakings where test procedure
changes are expected. (NEEA, No. 31 at p. 3) NEEA commented that it is
currently gathering field data on the laundry habits from households
participating in the Residential Building Stock Assessment, expected to
be complete by mid-2013. By June 2012, field data on clothes washer and
dryer energy use, the nature and size of laundry loads, washer and
dryer cycle choices, and number of cycles per year will become
available. (NEEA, No. 31 at p. 2).
NEEA also stated that it believes DOE is moving toward a test
procedure that delivers performance results for an ``average'' product,
rather than the specific clothes washer models being tested. NEEA
believes that this approach would undermine the basic intent of the
test procedure and the standards, which it believes should reasonably
reflect energy and water use for each model. (NEEA, No. 12 at pp. 1-2).
DOE is aware of ongoing and future planned field studies by DOE and
other parties, which are expected to provide relevant data regarding
current consumer usage patterns. DOE will consider any relevant data
resulting from these studies in future test procedure rulemakings.
Number of Annual Wash Cycles
In the January 2001 standards Final Rule, DOE estimated the
representative number of annual wash cycles per clothes washer as 392.
This number is not used in the calculations for the current energy
efficiency metric, because MEF is calculated on a per-cycle basis. To
include energy consumption from modes other than active washing mode in
the energy efficiency metric requires an estimate of the time a typical
clothes washer spends in active washing and all other non-active
washing modes. The number of annual wash cycles is used to determine
the time spent in the active washing mode, and also determines the
remaining time to be allocated to the other possible modes.
In the September 2010 NOPR, DOE proposed 295 as the representative
number of wash cycles per year, based on the 2005 Residential Energy
Consumption Survey (RECS) data. DOE determined preliminarily that this
was a more representative value than the results of the California
Residential Appliance Saturation Survey (California RASS), which
indicated 283 annual cycles, because the RECS survey was nationwide
rather than limited to a single state. DOE also made a preliminary
determination that the 2005 RECS value was more representative of
average use than the value based on a Procter & Gamble (P&G) study,
which indicated 308 annual cycles, due to the household size
distributions of the data sets. Overall, however, the relatively small
variation among the three estimates of annual clothes washer cycles
supported DOE's conclusion that 295 cycles per year was a reasonable
value to include in its clothes washer test procedure.
DOE received multiple comments in response to the proposed value of
295 annual cycles. ALS, the Joint Commenters, and Whirlpool support the
proposed number of annual cycles. (ALS, No. 10 at p. 2; Joint
Commenters, No. 16 at pp. 4-5; Whirlpool, No. 13 at p. 7) BSH also
agrees with a value of 295 annual cycles, with the caveat that, if DOE
decides to include measurement of self-clean energy and water use in
the test procedure, the number of annual cycles will need to be
adjusted upwards by the number of self-clean cycles per year suggested
by the manufacturer in the product's user manual. (BSH, No. 17 at p. 4)
ALS and AHAM questioned the validity of the 2005 RECS data, and
requested that DOE work with P&G to secure more recent data. AHAM
stated that P&G would be updating the clothes washer use study based on
2010 data. However, AHAM supports the proposed 295 annual cycles
because it is likely that the number of cycles has decreased since the
P&G data from 2005. (AHAM, No. 14 at pp. 11-12; ALS, No. 10 at pp. 2-3)
However, NEEA and the National Institute of Standards and Testing
(NIST) noted that the RECS and P&G data both dated from about 2005.
(NEEA, Public Meeting Transcript, No. 20 at p. 112; NIST, Public
Meeting Transcript, No. 20 at p. 112). Whirlpool stated that 295 cycles
per year is consistent with the reduction in average household size.
(Whirlpool, No. 13 at p. 7) The Joint Commenters stated that they had
conducted their own analysis using the 2005 RECS data, which also
resulted in an estimate of 295 annual clothes washer cycles. The Joint
Commenters believe that the 2005 RECS data provide a reasonably
accurate value in the absence of better data, and that the 2005 RECS
data, derived from a national survey, are more representative than the
California RASS data that captured usage from one state. (Joint
Commenters, No. 16 at pp. 4-5).
[[Page 13909]]
NEEA objected to DOE's proposal for 295 annual clothes washer use
cycles because NEEA believes that the 2005 RECS survey methods are
flawed. According to NEEA, the relatively large bin sizes provided in
the survey for the number of laundry loads per week introduces too much
uncertainty regarding the average weekly number within each bin. NEEA
further stated that it would not automatically discount California RASS
data on the basis that the survey represents only one state. NEEA
added, however, that it is not familiar enough with the California RASS
data, and can not comment on the suitability of using the data to
determine average annual use cycles. NEEA commented that it supports
using P&G data due to P&G's longtime work in this area and the scope
and detail in its survey. NEEA's interpretation of the P&G data results
in an estimate of 308 annual clothes washer use cycles, which according
to NEEA is similar to the approximately 310 annual cycles derived from
recent data collected by the California Public Utilities Commission
(CPUC). NEEA noted that while the average household size in the P&G
sample is larger than those indicated by the U.S. Census and the
American Housing Survey in 2007, it would be logical for households
with clothes washers to be larger than average. NEEA also recommended
that DOE acquire field data itself to determine annual clothes washer
use cycles. (NEEA, No. 12 at pp. 10-11; NEEA, Public Meeting
Transcript, No. 20 at pp. 113-114; NEEA, No. 26 at pp. 9-10).
In considering these comments, DOE notes that an independent
analysis of the 2005 RECS data by the Joint Commenters resulted in
essentially an identical estimate of the number of annual clothes
washer cycles as DOE proposed in the September 2010 NOPR. This suggests
that DOE's calculation of average annual cycles based on the weekly
usage data did not introduce any systematic error in the final value of
annual clothes washer cycles. DOE has also reviewed the clothes washer
data recently collected in Southern California as part of SDG&E's
``High Efficiency Clothes Washer Voucher Incentive Program'' and PG&E's
``Mass Markets Residential Program.'' \9\ Both programs used a
combination of telephone surveys and onsite metering to determine the
impact of high efficiency clothes washers on energy and water
consumption. As part of the telephone surveys, program participants
were asked to self-report the number of weekly wash loads. The results
for these surveys, from Table 30 in the CPUC report, are shown in Table
III.1 below.
---------------------------------------------------------------------------
\9\ The results of these and other 2006-2008 residential energy
efficiency programs run by the Investor-Owned Utilities in
California are summarized in a report to the CPUC: ``Residential
Retrofit High Impact Measure Evaluation Report'', The Cadmus Group,
Inc., Itron, Jai J. Mitchell Analytics, KEMA, PA Consulting Group,
and Summit Blue Consulting, LLC, February 8, 2010.
Table III.1--Self-Reported Wash Loads From 2009 Southern California
Telephone Surveys
------------------------------------------------------------------------
Average number
Utility Number of wash loads/
participants week
------------------------------------------------------------------------
PG&E.................................... 422 5.84
SDG&E................................... 301 5.80
-------------------------------
Total............................... 723 5.82
------------------------------------------------------------------------
Multiplying the average self-reported number of wash loads per week
by 52 weeks per year would result in 303 annual clothes washer use
cycles. This value can be compared to the results of the onsite
metering studies conducted under the PG&E and SDG&E programs during the
spring and early summer of 2009. These programs also recorded the
actual number of wash loads per week, based on energy and water meter
data, at 115 residential sites chosen to include both participants and
non-participants in the utility incentive programs. The results from
Table 20 in the CPUC report, disaggregated by participant status as
well as clothes washer efficiency, are presented in Table III.2.
Table III.2--Measured Wash Loads From 2009 Southern California Metering Studies
----------------------------------------------------------------------------------------------------------------
Number. of Number wash
Category Efficiency sites loads/week
----------------------------------------------------------------------------------------------------------------
Non-Participants.............................. Non-ENERGY STAR................. 24 4.77
ENERGY STAR..................... 17 6.23
Sub-Total....................... 41 5.38
Participants.................................. ENERGY STAR..................... 74 4.80
----------------------------------------------------------------------------------------------------------------
Weighted Average for all Sites.................................................................. 5.01
----------------------------------------------------------------------------------------------------------------
On average, subjects in the metering studies performed (5.01 loads
per week) x (52 weeks per year) = 261 annual clothes washer loads,
which is lower than the self-reported annual use cycles. Although in
general, metering data has a higher confidence level than survey
results, DOE also notes that the sample size of the onsite study was
relatively small, and there was significant variation within that
sample. For example, the annual use cycles for non-participants was
found to range from 248 for consumers with non-ENERGY STAR clothes
washers to 324 for consumers with ENERGY-STAR clothes washers. Further,
the data were also collected in a limited geographical region and over
only a portion of the year, and may not be fully representative of
national clothes washer usage over a complete year.
For these reasons, DOE has determined that the 2005 RECS report is
the most representative source of information on annual clothes washer
cycles, and is adopting a value of 295 annual cycles in today's final
rule.
ASAP questioned whether the proposed value of 295 annual clothes
washer cycles corresponds to the number of clothes dryer cycles
proposed in the amended DOE clothes dryer test procedure, accounting
for the dryer usage factor. (ASAP, Public Meeting Transcript, No. 20 at
p. 115) DOE adopted an amended clothes dryer test procedure in a final
rule published in the Federal Register on January 6, 2011. (76 FR 972)
In the amended test procedure, DOE revised the number of clothes dryer
annual use cycles from the 416 cycles per year, previously specified by
the clothes dryer test procedure, to 283 cycles. (10 CFR 430.23(d)) DOE
based this revision on analysis of data from the 2005 RECS for the
number of clothes washer cycles and the frequency of clothes dryer use.
According to DOE's analysis of 2005 RECS data, for households with both
a clothes washer and clothes dryer, the percentage of
[[Page 13910]]
clothes washer loads dried in a clothes dryer is 96 percent. Therefore,
adopting 295 annual clothes washer use cycles in today's final rule is
consistent with the amended clothes dryer test procedure.
DOE also notes that the dryer usage factor in the clothes washer
test procedure adopted in today's final rule is 0.91. This value is
also based on analysis of 2005 RECS data, but applies to all households
with a clothes washer, as explained in more detail in section III.C.3.e
of this rule.
Test Load Size Specifications
The current DOE clothes washer test procedure specifies the test
load size for the active washing mode energy tests based on the clothes
washer's container volume. The table specifying the test load sizes in
the test procedure, Table 5.1, currently covers clothes washer
container volumes only up to 3.8 ft\3\. DOE is aware that multiple
clothes washers available on the market have container volumes
exceeding 3.8 ft\3\.
In the September 2010 NOPR, DOE proposed extending Table 5.1 to
accommodate larger clothes washer capacities, up to 6.0 cubic feet. The
relationship between test load size and clothes washer volume is linear
in Table 5.1 in appendix J1; DOE determined preliminarily that these
values were appropriate, and that using a linear extension for larger
load sizes would be valid. The proposed amendment extended the linear
relationship between test load size and clothes washer container volume
currently in the DOE clothes washer test procedure.
In the August 2011 SNOPR, DOE proposed some minor adjustments to
the proposed extension of Table 5.1 to correct for inconsistent decimal
places in the minimum and maximum load size values, which subsequently
affected the calculation of some of the average load sizes. DOE
proposed to amend the extension to Table 5.1 by specifying each load
size value to the hundredths decimal place.
AHAM, ALS, and Whirlpool support the proposed linear extension of
the test load size in Table 5.1. AHAM, ALS, EarthJustice, and NRDC
agreed that DOE should extend Table 5.1 to accommodate clothes
container volumes up to 6.0 ft\3\. Whirlpool stated that test load size
has been the subject of several test procedure waivers granted by DOE
over the last six years, and that DOE's responses have been consistent
with the proposed extension of Table 5.1. According to Whirlpool, the
linear relationship remains valid because the majority of clothes
washers sold today are adaptive fill machines, which use only the
amount of water required by the load size. Furthermore, consumers
continue to wash some small loads in the higher-capacity machines. For
that reason, Whirlpool suggested, for example, that the 7.8 percent
increase in average test load size from a 3.0 ft\3\ to 3.3 ft\3\
clothes washer is reasonable even though capacity increased by 10
percent. Whirlpool does not believe that the test procedure is biased
to favor large-capacity clothes washers. AHAM stated that DOE should
ensure that the test procedure does not contain a bias towards large-
capacity machines. (AHAM, No. 2 at p. 23) EarthJustice and NRDC support
AHAM's statement. (AHAM, No. 2 at p. 23; AHAM, No. 4 at p. 4; AHAM, No.
14 at p. 12; AHAM, Public Meeting Transcript, No. 20 at pp. 122-123;
AHAM, No. 24 at p. 3; ALS, No. 10 at p. 3; Whirlpool, No. 13 at p. 7;
Whirlpool, No. 27 at p. 4; EarthJustice, No. 3 at p. 1; NRDC, No. 8 at
p. 1).
LG stated that it supports DOE's proposal for load sizes, but also
stated that the maximum load size in Table 5.1 should be the same for
all clothes container volumes, with annual usage cycles decreased for
machines with larger volumes to reflect a reduced number of loads per
year. (LG, Public Meeting Transcript, No. 20 at pp. 122, 124-126).
NIST recommended collecting additional load size data, because
consumers who need to do more laundry may purchase the larger clothes
washers. (NIST, Public Meeting Transcript, No. 20 at pp. 128-129).
NEEA does not support the proposed linear extension of Table 5.1 up
to clothes container volumes of 6.0 ft\3\. NEEA commented that there
are no data to suggest that maximum load sizes would extend to 24
pounds, and that there is no demonstrable correlation at this time
between clothes container volume and load weight or load volume. NEEA
stated that many households do some laundry loads when they run out of
clean clothes, or particular clothing items, regardless of the load
size or clothes washer capacity. NEEA recommended that DOE prescribe an
average test load size that is based on P&G data. (NEEA, No. 12 at p.
11; NEEA, No. 26 at p. 10).
The California Utilities, Energy Solutions (ES), the Joint
Commenters, NEEA, and NRDC commented that the test load sizes in Table
5.1 may create an unwarranted bias towards larger-capacity clothes
washers. The California Utilities and NRDC objected to the maximum load
sizes being a fixed percentage of total capacity, while the average
test load size is calculated as the average of a fixed minimum load and
the maximum load. The California Utilities, NRDC, and the Joint
Commenters provided values for the average test load size as a
percentage of capacity, which ranged from 63-68 percent for smaller-
capacity clothes washers but 54-57 percent for large-capacity machines.
NRDC commented that the relationship of load size to capacity may be
linear, but it is not proportionate, suggesting that consumers who
purchase larger-capacity clothes washers leave more capacity unused.
NRDC further commented that it is not sure that there is data to
support this conclusion. The California Utilities commented that the
average load size is the primary driver of the energy test load due to
the load usage factors, and that average load sizes increases with
capacity at a slower rate than the increase in maximum load size
because the minimum load size remains constant. The California
Utilities stated it was not aware of any recent consumer usage data on
test load size. ES also expressed concern about the fixed minimum load
size for all capacities. (California Utilities, No. 18 at pp. 3-4;
California Utilities, No. 25 at pp. 2-3; ES, Public Meeting Transcript,
No. 20 at p. 124; Joint Commenters, No. 16 at p. 5; Joint Commenters,
No. 23 at p. 1; NEEA, No. 12 at p. 12; NEEA, No. 26 at pp. 10-11; NRDC,
No. 8 at p. 1; NRDC, Public Meeting Transcript, No. 20 at pp. 14, 119-
121; 126-127).
The Joint Commenters provided calculations for the allowably energy
and water consumed per pound of clothes for clothes washers with
capacities ranging from 3.0 to 5.5 ft\3\, based on the weighted-average
test load size and assuming a fixed MEF of 2.0 and a fixed WF of 6.0.
According to the Joint Commenters' calculations, under those conditions
a 5.5 ft\3\ clothes washer with MEF = 2.0 is allowed 10 percent more
energy and water per pound of clothes than a 3.0 ft\3\ clothes washer
with the same MEF rating. The Joint Commenters stated that this could
have implications for the ENERGY STAR ratings, if large-capacity
clothes washers can more easily achieve ENERGY STAR certification
without ensuring better real-world energy and water use. (Joint
Commenters, No. 16 at p. 5).
The California Utilities and the Joint Commenters suggested
approaches for DOE to revise Table 5.1 to eliminate a possible bias
towards larger-capacity clothes washers. The California Utilities
recommended that DOE base average test load size on a fixed percentage
of clothes container volume, and suggested a value of approximately 65
percent of capacity. The California Utilities further recommended that
DOE develop a new
[[Page 13911]]
metric based on energy use per pound of clothing washed, rather than
energy use as a function of capacity. The California Utilities
acknowledged the substantial input required from interested parties and
the attendant significant negative impact on the clothes washer test
procedure rulemaking schedule, and therefore recommended that DOE
consider this approach for a future test procedure rulemaking.
(California Utilities, No. 18 at p. 4).
The Joint Commenters suggested three possible alternatives for
revising the test load sizes in Table 5.1:
1. Base the average test load size for all washers in a particular
product class on the percentage of capacity used by the average test
load of the average-sized clothes washer in that product class. The
Joint Commenters noted that, according to AHAM, the average shipment-
weighted capacity in 2009 was 4.03 ft\3\ for front-loaders and 3.66
ft\3\ for top-loaders, yielding a capacity utilization (i.e., ratio of
average test load weight to maximum test load weight) for the average
test load of 59 percent for front-loaders and 60 percent for top-
loaders. Maximum test load weights for other clothes washer capacities
would be derived using the scaling factor currently used in Table 5.1,
approximately 4 pounds per cubic foot of capacity.\10\
---------------------------------------------------------------------------
\10\ The comment states that the average test load weight should
be scaled, but this may be an editing error: In Table 5.1 the
scaling factor for average test load weight ranges from 3.5 lb/ft\3\
for small capacity to 2.3 lb/ft\3\ for large capacity, whereas the
scaling factor for maximum test load weight is a constant 4.10
0.03 lb/ft\3\.
---------------------------------------------------------------------------
2. Base the average test load size for all clothes washers on the
average test load size assumed in the RMC calculation in the test
procedure (i.e., the average test load size would be 52 percent of the
maximum load size).
3. Use the test load sizes in the current Table 5.1, but calculate
the average test load size for clothes washers with capacities between
3.8 ft\3\ and 6.0 ft\3\ using the capacity utilization of the largest
machine in the current table (i.e., the average test load size would be
fixed at 59.7 percent of the maximum test load size for clothes washers
in this capacity range.)
The Joint Commenters requested that DOE test a sample of front-
loading and top-loading clothes washers of various capacities using the
above-suggested alternatives to compare the resulting energy and water
factors with the test results obtained using the proposed test
procedure, and if there are substantial differences, DOE should
consider revisions to Table 5.1 to reduce the potential for unwarranted
bias toward large capacity clothes washers. (Joint Commenters, No. 16
at pp. 6-7).
In the September 2010 NOPR, DOE requested additional consumer data
regarding current test load sizes, but it did not receive any such data
from interested parties. DOE carefully considered the existing data
sources for evaluating minimum, maximum, and average test loads. As
noted above, P&G provided data indicating that, in 2003, average
consumer load sizes were 7.2 lb for all top-loading clothes washers and
8.4 lb for all front-loading clothes washers. However, the P&G data
does not identify average load size as a function of machine capacity,
and therefore DOE cannot infer that these values are representative of
average consumer load sizes for clothes washers of all capacities
available on the market today.
Under the current formulation of the test load sizes, the average
load size represents a decreasing percentage of maximum load size as
the capacity of the clothes washer increases. Larger-capacity machines
can therefore achieve a given MEF/WF rating using larger amounts of
water and energy per pound of clothing than smaller-capacity machines
with the same MEF/WF rating. Information to suggest that this scenario
does not reflect true consumer usage was not available for this
rulemaking. Information that would indicate that average consumer
clothing load sizes are a fixed percentage of clothes container
capacity (and, thus, maximum clothes load size) was also not available.
Updated consumer usage data will be necessary to determine whether the
numerical advantage for large-capacity clothes washers is justified by
real-world use. DOE is aware of ongoing and future planned field
studies that are expected to provide updated data regarding the
relationship between clothes washer capacity and clothing load size.
DOE will consider using data from these field studies in future clothes
washer test procedure rulemakings.
Based on available data, DOE determined that a fixed minimum load
size is appropriate, given that consumers may desire to wash only a few
articles of clothing regardless of the size of their clothes washer. In
considering maximum test load sizes, DOE reviewed user manuals for
clothes washer models from multiple manufacturers, and noted that the
instructions generally included a notation that the clothes container
could, and for some cycles, should, be loaded to the point that the
clothes container is loosely filled. DOE infers that some consumers
will follow these instructions, which will result in a maximum test
load size that is proportional to the volume of the clothes container.
For these reasons, DOE has determined that the linear extension of
Table 5.1, including the proportional relationship of maximum test load
size to clothes washer capacity, a fixed minimum test load size, and
calculation of average test load size, currently represents the best
possible approach for determining these load sizes. Therefore, today's
final rule extends Table 5.1 as proposed in the August 2011 SNOPR in
appendix J1 and the new appendix J2. If DOE receives new data that
would lead to a different conclusion for the test load sizes specified
in Table 5.1, DOE will consider updating the test procedure at that
time. The extension of Table 5.1 will also address the waivers and
interim waivers currently granted to several manufacturers for testing
clothes washers with capacities greater than 3.8 cubic feet.
Load Usage Factors
The load usage factors in the DOE test procedure represent the
fraction of all wash cycles a typical consumer runs for the minimum,
average, and maximum load sizes. At the time of publication of the
September 2010 NOPR, DOE was not aware of any recent data
characterizing such usage patterns. Therefore, DOE did not propose any
changes to the load usage factors.
NEEA stated that, in the absence of updated data, the existing load
usage factors are acceptable, but that DOE should acquire contemporory
data to support a validation of the current numbers. (NEEA, No. 12 at
p. 10, 12; NEEA, No. 26 at p. 11) AHAM commented that it is not aware
of recent data characterizing load size usage patterns, and thus it
supports DOE's proposal not to change the load usage factors. (AHAM,
No. 14 at p. 12).
For the reasons stated in the September 2010 NOPR, DOE has
determined that the load usage factors are the best estimate of usage
patterns available at this time. Therefore, DOE is not revising the
load usage factors in today's final rule.
Temperature Use Factors
DOE proposed in the September 2010 NOPR to amend the TUFs in the
clothes washer test procedure to account for
[[Page 13912]]
steam wash cycles, and to revise the warm rinse TUF. Table III.3 shows
the TUFs proposed in the September 2010 NOPR.
Table III.3--Temperature Use Factors Proposed in the September 2010 NOPR
--------------------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------------
Max wash temp available <=135 [deg]F
>135 [deg]F
Steam
(57.2 [deg]C)
(57.2 [deg]C)
--------------------------------------------------------------------------------------------------------------------------------------------------------
No. wash temp selections..................................... Single 2 Temps >2 Temps 3 Temps >3 Temps 3 Temps >3 Temps
--------------------------------------------------------------------------------------------------------------------------------------------------------
TUFs (steam)................................................. ........... ........... ........... ........... ........... 0.02 0.02
TUFm (extra hot)............................................. ........... ........... ........... 0.14 0.05 0.12 0.03
TUFh (hot)................................................... ........... 0.63 0.14 ........... 0.09 ........... 0.09
TUFww (warm/warm)............................................ ........... ........... * 0.27 * 0.27 * 0.27 * 0.27 * 0.27
TUFw (warm).................................................. ........... ........... 0.22 0.22 0.22 0.22 0.22
TUFc (cold).................................................. 1.00 0.37 0.37 0.37 0.37 0.37 0.37
--------------------------------------------------------------------------------------------------------------------------------------------------------
* Only applicable to machines offering a warm/warm cycle. For machines with no warm/warm cycle, this value should be zero and the warm TUF (TUFw) should
be increased by 0.27.
DOE assumed that the steam wash cycle TUF would affect only the
extra-hot TUF, leaving the other TUFs unchanged. DOE discussed its
analysis of the data on consumer wash and rinse temperature selections
from the 2005 RECS and the 2004 California RASS, both of which provide
information on temperature selections. Because the temperature use
factors from each source demonstrated general agreement, DOE determined
that the current TUFs in its test procedure are a reasonable estimate
of current consumer use. DOE therefore proposed to keep the TUFs for
cold wash, warm wash, and hot wash unchanged. DOE incorporated the
steam cycle TUF by decreasing the value of the extra-hot TUF.
In the September 2010 NOPR, DOE also proposed to revise the methods
for measuring warm rinse and to incorporate the revised measurement
into the test procedure's calculations. DOE observed that most clothes
washers available on the market allow users to select a warm rinse only
when it is coupled with a warm wash cycle. DOE, therefore, proposed to
establish a TUF for a full warm wash/warm rinse cycle. DOE also
proposed to eliminate the incremental use factor attributed to warm
rinse, requiring instead the measurement of energy and water
consumption over an entire wash/rinse cycle that utilizes warm rinse.
DOE proposed using the same warm rinse TUF of 0.27 for the complete
warm wash/warm rinse cycle. For those clothes washers with such an
option, DOE also proposed to reduce the warm wash/cold rinse TUF by a
corresponding amount, lowering it from 0.49 to 0.22. DOE further
proposed that the warm wash/warm rinse TUF would not be applicable for
clothes washers with one or two wash temperature settings, because
those washers would not provide a warm wash/warm rinse cycle. DOE did
not propose to amend the TUFs for wash temperature selections other
than the warm wash, except for units offering a steam wash cycle as
previously described. Additionally, the proposed TUFs for warm/cold and
warm/warm would sum to the existing warm wash TUF; overall, the warm
wash temperature selection would receive the same weight in the energy
and water consumption calculations.
DOE received multiple comments from interested parties in response
to the proposed temperature use factors. NEEA expressed concern over
the lack of recent consumer usage pattern data, but stated that the
existing data do not support changing the TUFs currently provided in
the test procedure. NEEA commented that the most important reason to
acquire more recent data is that ``hot'', ``warm'', and ``cold''
designations for the energy test cycle do not reflect the current range
of options for wash and rinse temperatures. NEEA also expressed concern
that the California RASS data may be outdated and the fact that it is
based on survey data rather than field data. However, NEEA stated that
the most recent California usage data would likely support the current
TUFs. (NEEA, No. 12 at p. 12; NEEA, Public Meeting Transcript, No. 20
at p. 131).
NEEA also supports the proposed methodology for measuring water and
energy consumption for warm rinse over a complete cycle, with one
exception. NEEA does not agree that most clothes washers currently
available allow users to select a warm rinse only with a warm wash
cycle. NEEA stated it may be appropriate to specify that a separate TUF
be established for a hot wash/warm rinse cycle, a hot wash/warm rinse/
steam cycle, or a warm wash/warm rinse/steam cycle. (NEEA, No. 12 at p.
12).
BSH commented that consumer use is well-represented by measuring
cold, warm, and possibly hot wash cycles specified for cotton or
``normal'' fabrics, for the following reasons:
1. Many customers run one low-energy cycle, such as a ``delicates''
or ``hand-wash'' program, per week.
2. Many customers also run one or more ``permanent press'' or
similar program per week, which is typically equal to or lower in
energy than the cotton program.
3. Other special programs that use more or less energy or water
than the cotton program are run very infrequently.
4. Basing MEF on only the cotton or normal programs is already
over-reporting energy use versus actual consumer behavior.
(BSH, No. 17 at p. 5).
Whirlpool commented that DOE must use data that are representative
of currently manufactured clothes washers rather than data that are 15
or more years old. Whirlpool stated that it had provided data to DOE
that suggested a TUF of 0.016 (1.6 percent) for warm rinse, and that
this percentage is representative of its clothes washers. Whirlpool
also noted that it is the largest manufacturer of clothes washers in
the United States, with a 64 percent market share, and it only offers a
warm rinse option on approximately 9 percent of its clothes washers.
According to Whirlpool, for the 27 percent TUF for warm rinse to be
valid, its competitors would have to offer warm rinse on over 60
percent of their machines and all consumers would have to select warm
rinse if it were offered. (Whirlpool, No. 13 at pp. 8-11).
AHAM, ALS, and Whirlpool stated that the proposed warm wash/warm
rinse TUF of 0.27 is too high, and that a warm rinse option has become
increasingly rare in clothes washers currently available on the market.
ALS, AHAM, and Whirlpool further commented that data from Natural
[[Page 13913]]
Resources Canada (NRCan) show that both wash and rinse temperatures are
decreasing over time. According to AHAM and Whirlpool, for all clothes
washers in 2007, the NRCan data shows warm rinse to be the most
frequent selection only 16 percent of the time, which is a decrease
from 23 percent in 1993. AHAM, ALS, and Whirlpool commented that NRCan
data is relevant to U.S. consumer usage patterns because Canadian
clothes washer designs are the same as those in the United States and
consumer practices are similar. (AHAM, No. 14 at pp. 12-13; ALS, No. 10
at p. 4; Whirlpool, No. 13 at pp. 8-11; Whirlpool, Public Meeting
Transcript, No. 20 at pp. 133-134).
BSH commented that it supports the use of the NRCan data for
determining the TUFs, and that the conclusions AHAM has drawn from the
data agree well with BSH's customer feedback. (BSH, No. 17 at p. 4) LG
stated that DOE could infer warm rinse usage from the percentage of
detergent purchases that are cold water formulations. According to LG,
if, for example, 85 percent of the detergent purchased in the United
States were cold-water detergent, DOE could assume that the warm rinse
TUF is very low. (LG, Public Meeting Transcript, No. 20 at p. 133)
China requested that DOE clarify the TUF for steam, extra-hot, hot,
warm, and cold wash cycles as well as warm wash/warm rinse and other
wash modes. (China, No. 19 at p. 4).
DOE re-examined the 2005 RECS data to determine whether the usage
patterns show a reduction in warm rinse usage for newer machines, of
which, according to Whirlpool, a smaller percentage are including a
warm rinse option. As shown in Table III.4, there is no correlation in
the 2005 RECS data between the age of the clothes washer and the
percentage of users reporting that they usually select warm rinse. The
percentage of users reporting that they usually select warm rinse
ranged from 19.1 to 21.5 percent. These data suggest that the
introduction of newer models to the installed base did not affect
consumer usage of warm rinse, at least during the time frame covered by
the survey (i.e., until 2005).
Table III.4--2005 RECS Data on the Use of Warm Rinse by Age of the
Clothes Washer
------------------------------------------------------------------------
Percentage of
users that
Age of clothes washer usually use
warm rinse
------------------------------------------------------------------------
Less than 2 years old................................... 21.5
2 to 4 years old........................................ 19.1
5 to 9 years old........................................ 19.2
10 to 19 years old...................................... 19.9
20 years or older....................................... 21.4
------------------------------------------------------------------------
DOE further notes that the TUF for warm rinse is applicable only to
those clothes washers that provide a warm rinse option (i.e., the warm
rinse TUF represents the percentage of laundry loads for which a
consumer selects the warm wash/warm rinse temperature combination on
machines that offer a warm rinse option). Therefore, DOE disagrees with
Whirlpool's statement that for the 27-percent TUF for warm rinse to be
valid, its competitors would have to offer warm rinse on over 60
percent of their machines and all consumers would have to select warm
rinse if it were offered. The intention of the TUFs is to represent
typical consumer usage patterns of individual clothes washer models
with a specific set of temperature options, not the average consumer
usage patterns across all types of clothes washer models.
DOE also reiterates that the survey data indicating warm rinse
usage of 1.6 percent are based on a single clothes washer model from a
single manufacturer, and that this clothes washer model does not offer
the warm rinse option on the cycle recommended for cotton or linen
clothes. Commenters provided no additional data to demonstrate that
this conclusion would be valid for all clothes washer models offering a
warm rinse, including clothes washers that offer a warm rinse option on
the cycle recommended for cotton or linen clothes.
DOE does not have any information to determine what percentage of
respondents in either the NRCan or 2005 RECS surveys who stated that
they usually used cold rinse cycles were using machines equipped with a
warm rinse option. DOE believes it is reasonable to assume that at
least some consumers with cold rinse-only clothes washers were included
in the survey samples, and thus, if those respondents were discounted,
the percentage of users selecting warm rinse would be even higher than
the estimates shown above. Given the disparity between the results for
warm rinse usage from the NRCan and 2005 RECS surveys and the data
submitted by Whirlpool, DOE concludes that there is a lack of evidence
on which to base a decrease in the existing TUF value, as suggested by
Whirlpool.
As discussed in section III.C.2.a, DOE is not amending the test
procedure to measure energy and water use in steam wash cycles. Thus,
in the absence of sufficient data on recent consumer usage patterns to
warrant changing the TUFs, and because DOE is not adopting provisions
to measure steam wash cycles, DOE is retaining the TUFs that are
provided in the existing test procedure at appendix J1, with the
modification that the warm/warm TUF will be treated as a complete wash/
rinse cycle, and the warm/cold TUF adjusted accordingly when a warm/
warm cycle is available on the clothes washer.
DOE considered the possibility of requiring measurement of a hot
wash/warm rinse cycle as part of the energy test cycle, and assigning a
TUF accordingly. DOE's analysis of 2005 RECS data indicates that the
percentage of all respondents who usually select a hot wash/warm rinse
cycle is 1.8 percent. DOE does not believe that this small percentage
would warrant the additional test burden associated with measuring a
hot wash/warm rinse cycle and including such energy and water
consumption in the test procedure calculations. Accordingly, DOE is not
adopting a TUF for hot wash/warm rinse in today's final rule.
Dryer Usage Factor
DOE proposed in the September 2010 NOPR to amend its clothes washer
test procedure to include a dryer usage factor (DUF) of 0.91, based on
the 2005 RECS. DOE proposed to use the value derived from the 2005
RECS, rather than the 2004 California RASS, because the 2004 California
RASS is inconsistent with the proposed number of wash cycles per year
and because the 2005 RECS data represent the entire country rather than
one state.
NEEA agreed with DOE's methodology for deriving the proposed DUF.
(NEEA, No. 12 at p. 12) AHAM stated that it does not oppose the
proposed DUF, but commented that DOE should be relying on more
representative data than that in the 2005 RECS. (AHAM, No. 14 at p. 13)
ALS opposed the proposed DUF, questioning the validity of the 2005 RECS
data. ALS supports retaining the existing value of 0.84, in the absence
of other data. (ALS, No. 10 at p. 4) ALS did not provide any further
information on why it believes the 2005 RECS data may be invalid. DOE
has determined that 2005 RECS data is the best available data that
reasonably captures the dryer usage practices of consumers using
residential
[[Page 13914]]
clothes dryers, and is thus adopting a revised DUF of 0.91 in the
amended test procedure in this final rule.
Load Adjustment Factor
The load adjustment factor (LAF) represents the ratio of maximum
load size to average load size. This ratio is used in the calculation
of the energy required to remove moisture from the test load. The RMC
value used in this calculation is based only on tests using the maximum
test load, and the LAF is used to scale this value down to represent
the average load size. In the September 2010 NOPR, DOE noted that it
lacked information warranting adjustment of this value or a change from
a fixed value to one that varies as a function of average load size,
and therefore did not propose to amend the LAF in the test procedure.
In response to the September 2010 NOPR, DOE received numerous
comments regarding the LAF, which were summarized in the August 2011
SNOPR. Upon consideration of these comments, DOE determined that the
LAF is duplicative of, yet inconsistent with, the load usage factors.
Therefore, for consistency with other relevant provisions of the test
procedure, DOE proposed in the August 2011 SNOPR that the
representative load size calculation in the equation for drying energy
incorporate the load usage factors rather than a separate LAF. DOE
proposed that the current representative load size calculation be
replaced by the weighted-average load size calculated by multiplying
the minimum, average, and maximum load usage factors by the minimum,
average, and maximum load sizes, respectively, and summing the
products.
DOE received the following comments in response to the proposed
elimination of the LAF in the August 2011 SNOPR:
AHAM and ALS support the approach of using a weighted-average load
size in the calculation of dryer energy use, but note that the new
approach will increase the measured energy. AHAM and ALS added that DOE
must revise the relevant energy conservation standard to reflect the
new test procedure, ensuring that there is no change in the stringency
of the standards based on average energy consumption calculations
before and after the changes to the test procedure. ALS suggested
revising only appendix J2 with this change, noting that there is still
time to consider this impact in the updated minimum efficiency
standards. (AHAM, No. 24 at p. 4; ALS, No. 22 at pp. 2-3).
Whirlpool stated that it would oppose the proposal to use a
weighted-average load size for the purposes of calculating drying
energy if it would require testing for RMC on the average and minimum
load sizes in addition to the maximum load size. Whirlpool stated that
such a requirement, if adopted, would triple the RMC testing required,
adding at least one full day to the test time for each base model.
Whirlpool added that DOE's proposal would not increase the test burden
if it requires only testing RMC at the maximum load size. Whirlpool
also recommended that this amendment be made only to appendix J2.
(Whirlpool, No. 27 at p. 3).
The Joint Commenters, California Utilities, and NEEA support DOE's
proposal to replace the representative load size based on the load
adjustment factor with a weighted-average load size to calculate dryer
energy use. The Joint Commenters and the California Utilities noted,
however, that this proposed change would result in a greater increase
in the representative load size used to calculate dryer energy
consumption for small capacity washers than for large-capacity washers,
which would therefore make any potential bias towards large-capacity
washers more significant. The Joint Commenters added that they are not
aware of any data indicating that consumers utilize a smaller
percentage of the washer capacity when using large-capacity machines
compared to smaller machines, nor of any data indicating it is more
difficult for larger-capacity machines to achieve high efficiency
ratings. In the absence of such data, the Joint Commenters recommended
that the weighted-average load size as a percentage of total capacity
be kept constant across all washer capacities. (Joint Commenters, No.
23 at p. 4; California Utilities, No. 25 at p. 3; NEEA, No. 26 at p.
5).
For the reasons stated in the August 2011 SNOPR, DOE replaces the
representative load size calculation with the weighted average load
size calculated using the load usage factors. This change applies only
to the newly created appendix J2. This approach will not require
measuring the RMC for any additional load sizes, and therefore will not
increase manufacturer test burden.
4. Energy Test Cycle Definition
The ``energy test cycle'' consists of the wash cycles currently
used in determining the modified energy factor (MEF) and water factor
(WF) for a clothes washer, and proposed to be used for determining
integrated modified energy factor (IMEF) and integrated water
consumption factor (IWF). The energy test cycle is defined in section
1.7 of the current clothes washer test procedure as follows:
``1.7 Energy test cycle for a basic model means (A) the cycle
recommended by the manufacturer for washing cotton or linen clothes,
and includes all wash/rinse temperature selections and water levels
offered in that cycle, and (B) for each other wash/rinse temperature
selection or water level available on that basic model, the
portion(s) of other cycle(s) with that temperature selection or
water level that, when tested pursuant to these test procedures,
will contribute to an accurate representation of the energy
consumption of the basic model as used by consumers. Any cycle under
(A) or (B) shall include the agitation/tumble operation, spin
speed(s), wash times, and rinse times applicable to that cycle,
including water heating time for water heating clothes washers.''
In the September 2010 NOPR, DOE proposed to amend Part (B) of the
energy test cycle definition to clarify the wash parameters that should
be considered to determine which cycle settings should be included
under Part (B) of the definition.
In additional testing after the publication of the September 2010
NOPR, DOE observed that some clothes washers retain in memory the most
recent options selected for a cycle setting the next time that cycle is
run. To ensure repeatability of test results, particularly for cycles
under Part (B) of the energy test cycle definition, DOE proposed in the
August 2011 SNOPR to provide further clarification that the
manufacturer default conditions for each cycle setting shall be used,
except for the temperature selection, if necessary.
DOE received multiple comments from interested parties regarding
its proposed changes to the energy test cycle definition. The comments
generally indicated that the proposed revisions to the definition still
lacked clarity. In response to the August 2011 SNOPR, Whirlpool, GE,
and ALS jointly proposed a modified definition of the energy test cycle
which eliminated what these commenters perceived as a primary source of
ambiguity in DOE's previously proposed definition. (GE, Whirlpool, &
ALS, No. 28 at pp. 1-2) Because of the scope of the manufacturers'
proposed changes, and because the energy test cycle definition is a
critical component of the test procedure, DOE incorporated the
manufacturers' suggestions into a new definition, proposed in the
November 2011 SNOPR. The most notable proposed change involved Part (B)
of the energy test cycle definition, which DOE proposed as follows:
``(B) If the cycle setting described in (A) does not include all
wash/rinse temperature
[[Page 13915]]
combinations available on the clothes washer, the energy test cycle
shall also include the alternate cycle setting(s) offering these
wash/rinse temperature combination(s), tested at the wash/rinse
temperature combinations not available on the cycle setting
described in (A).
Where multiple alternate cycle settings offer a wash/rinse
temperature combination that is not available on the cycle setting
recommended by the manufacturer for washing cotton or linen clothes,
the cycle setting certified by the manufacturer to have the highest
energy consumption, as measured according to section 2.13, shall be
included in the energy test cycle.''
DOE stated that this proposed new definition would provide further
clarity and produce more accurate, repeatable, and reproducible results
within and among all test laboratories.
DOE also proposed a new section 2.13, which would provide
instructions for determining the cycle setting with the highest energy
consumption in the case where multiple alternate cycle settings offer a
wash/rinse temperature combination not available on the cycle setting
recommended by the manufacturer for washing cotton or linen clothes.
In the November 2011 SNOPR, DOE responded to prior comments
received in response to the September 2010 NOPR and August 2011 SNOPR.
DOE received the following comments in response to the November 2011
SNOPR:
NEEA commented that it supports DOE's decision to keep Part (B) of
the energy test cycle definition, and stated that all cycle selections
for which a TUF has been developed should be included in the energy
test cycle. NEEA recommended that DOE ensure that manufacturer default
settings are chosen for selections other than water temperature,
particularly for parameters that would affect RMC, since a large
fraction of total energy use is derived from RMC. NEEA believes this is
especially important since DOE proposed to use only machine and hot
water energy use as the criteria for determining which of the alternate
cycle settings has the highest energy use. NEEA added that it believes
DOE adequately evaluated the potential test burden impact on
manufacturers, and it does not believe that the proposed test procedure
modifications will create additional test burden on any manufacturers.
(NEEA, No. 31 at p. 2).
AHAM commented that the newly proposed energy test cycle definition
would not provide any further clarity to manufacturers. AHAM and GE
suggested that further clarification of the language in several areas
would be necessary to ensure the test procedure is repeatable and
representative of consumer behavior. In particular, AHAM suggested that
the definition should explicitly state that all temperature selections
corresponding to the TUFs, which are available on a product, be tested
only once, and that they should be tested only during the ``Normal''
cycle if possible. (AHAM, No. 34 at p. 2; GE, No. 35 at p. 1).
Whirlpool reiterated its comment from the August 2011 SNOPR that
the language of Part (A) of the current energy test cycle definition in
appendix J1 is adequate and that Part (B) does not add value. Whirlpool
also stated, however, that it agrees with DOE that the language in Part
(B) of the current energy test cycle definition in appendix J1 is
unclear and subject to varying interpretations. Whirlpool commented
that as written, DOE's proposal would not reflect real-world consumer
use and would increase manufacturer test burden by 3-4 times. Whirlpool
stated that it believes DOE did not intend in its proposed language to
require testing the maximum energy-consuming cycles for all possible
temperature combinations on a product; rather, the scope for inclusion
of test cycles beyond the ``Normal'' cycle should logically be limited
to temperature selections for which a TUF has been developed. Whirlpool
added that limiting cycle selection to already-existing TUFs would
eliminate the need for exhaustive testing, which would reduce test
burden and be more representative of consumer usage. (Whirlpool, No. 33
at pp. 1-2).
After reviewing comments from interested parties, DOE notes that it
intended its proposed definition to require the testing of all
temperature selections available on a product for which a TUF has been
developed. See 76 FR 69870, 69875. DOE also agrees with commenters who
suggested that each TUF should be tested only once and that each TUF
should be tested using the ``Normal'' cycle if possible. DOE did not
intend for the revised definition to require the testing of all
temperature combinations within all the cycle selections available on a
machine. DOE concurs that this would have resulted in a significant
increase in test burden.
DOE has amended the language of the energy test cycle in today's
final rule accordingly. These amendments are largely consistent with
the suggested amendments from manufacturers, as described in more
detail in the following sections.
Regarding the use of manufacturer default settings, DOE concurs
with NEEA that the manufacturer default settings for selections other
than water temperature should be used, including during testing under
the new section 2.13 to determine which of the alternate cycle settings
has the highest energy use. Today's final rule specifies in both the
energy test cycle definition and in section 2.13 that the manufacturer
default settings should be used for all wash parameters other than
temperature selection.
The following sections describe comments received in regard to each
of the individual parts of DOE's proposed definition of the energy test
cycle, as well as comments regarding the new section 2.13 and the
proposed revision to manufacturer reporting requirements. DOE's
responses to comments are provided in each section.
Part (A) of the Proposed Definition
AHAM proposed modifying Part (A) to clarify that it applies only to
temperature selections for which TUFs have been developed, as follows:
``(A) The cycle setting recommended by the manufacturer for
washing cotton or linen clothes, including all wash/rinse
temperature selections for each of the temperature use factors
(TUFs) offered in that cycle setting, and''
(AHAM, No. 34 at p. 6)
DOE believes that AHAM's proposed modification would add clarity to
the energy test cycle definition while maintaining consistency with the
intent of DOE's proposed definition. The proposed modification would
also maintain consistency with the original intent of Part (A) as
defined in the current test procedure at appendix J1. Therefore, this
final rule adopts AHAM's proposed clarification for Part (A) of the
energy test cycle definition in appendix J2.
Part (B) of the Proposed Definition
AHAM and GE requested clarification of the term ``temperature
combination'' in the second paragraph of Part (B) in relation to the
term ``temperature selection'' in Part (A). AHAM proposed maintaining
consistency in the language in order to avoid ambiguity from using two
words with the same meaning. AHAM requested that the term ``temperature
selection'' be used instead, believing that it is clearer and more
representative. (AHAM, No. 34 at p. 2; GE, No. 35 at p. 2).
AHAM, ALS, and GE requested clarification of the phrase ``shall
also include'' in Part (B) of the energy test cycle definition. ALS
commented that it is unclear as to whether the phrase ``shall be
included'' means to directly add the energy of Part (B) to Part (A), or
to average the energy from Parts (A) & (B), or to apply an unknown
usage factor to Part (B). (AHAM, No. 34 at p. 2; ALS,
[[Page 13916]]
No. 32 at p. 1; GE, No. 35 at p. 2) Whirlpool commented that averaging
all cycles used by consumers would be unduly burdensome and would not
provide any appreciable difference in results than would be derived
from Part (A) of the current energy test cycle definition in appendix
J1. (Whirlpool, No. 33 at p. 1).
AHAM proposed modifying Part (B) by specifying that Part (B)
applies only to temperature selections for which TUFs have been
developed, and that each TUF available on the product should be tested
only once. GE commented that it agrees with AHAM's proposed
modifications. Whirlpool also suggested specifying that Part (B)
applies only to temperature selections for which TUFs have been
developed. (AHAM, No. 34 at p. 6; GE, No. 35 at p. 2; Whirlpool, No. 33
at p. 2).
AHAM proposed the following language for Part (B), which also
incorporates the suggested edits of Whirlpool:
``(B) If the cycle setting described in Part (A) does not
include all wash/rinse temperature selections for each of the TUFs
available on the clothes washer, the energy test cycle shall also
include the alternate cycle setting(s) offering these remaining
wash/rinse temperature selection(s), tested at the wash/rinse
temperature selections for each TUF or TUFs not available on the
cycle setting described in Part (A).
Where multiple alternate cycle settings offer a wash/rinse
temperature selection for which a TUF has been developed and that is
not available on the cycle setting recommended by the manufacturer
for washing cotton or linen clothes described in Part (A), the
alternate cycle setting certified by the manufacturer to have the
highest energy consumption for that TUF, as measured according to
section 2.13, shall be included in the energy test cycle so that
each TUF that is available on the product has been tested once.''
(AHAM, No. 34 at p. 6)
DOE notes that Part (B) of its proposed definition uses the term
``temperature combination'' instead of the term ``temperature
selection,'' which is used in Part (A). In addition, the term
``temperature selection'' implies a setting on the machine that a user
would select, whereas ``temperature combination'' could be interpreted
to mean the actual temperature experienced inside the wash drum for a
given temperature selection. This could create confusion if a
temperature selection on the machine provides different actual
temperatures depending on which cycle selection is chosen. For example,
a hot/cold temperature selection could provide a wash temperature of
120 [deg]F on the Cottons setting with a 60 [deg]F rinse temperature,
yet provide a higher wash temperature of 135 [deg]F on the Heavy Duty
setting with a 60 [deg]F rinse temperature. In this case, ``temperate
selection'' would refer to the single labeled hot/cold selection on the
machine, whereas ``temperature combination'' could be interpreted to
mean both the 120/60 [deg]F wash/rinse temperature combination and the
135/60 [deg]F temperature combination. The intent of DOE's proposed
definition of the energy test cycle is to require the testing of each
wash/rinse temperature selection as labeled on the machine's control
panel, rather than requiring the testing of every single temperature
combination that occurs among all the different cycle selections on the
machine. Therefore, today's final rule uses the term ``temperature
selection'' consistently throughout the energy test cycle definition.
Similarly, DOE is concerned that the term ``cycle setting'' could
also introduce ambiguity into the definition. DOE had proposed to use
the term ``cycle setting'' rather than the term ``cycle,'' which is
used in the current appendix J1 definition, to differentiate between
the labeled cycles on a machine (i.e., Normal, Whites, Colors, Heavy
Duty, etc.) and a single active mode laundry cycle, which is commonly
referred to as a ``cycle.'' DOE has observed that user manuals from
manufacturers representing a significant portion of the market refer to
the labeled cycles as ``cycles'' (i.e., the ``Normal cycle'', ``Whites
cycle'', ``Colors cycle,'' etc.). Because of this, a ``cycle setting''
could be interpreted to mean a specific temperature, soil level, spin
speed, or other setting within the labeled cycle. Therefore, to prevent
this possible ambiguity, today's final rule instead uses the term
``cycle selection'' to mean the labeled cycle on the machine.
As discussed previously, DOE intended its proposed definition to
require the testing of all temperature selections available on a
product for which a TUF has been developed. DOE also agrees with
commenters that each TUF should be tested only once and that each TUF
should be tested using the ``Normal'' cycle if available. Therefore,
DOE supports AHAM and the manufacturers' suggested modifications to
Part (B), which specify that Part (B) applies only to temperature
selections for which TUFs have been developed, and that each TUF
available on the product should be tested only once. Therefore, today's
final rule adopts AHAM's proposed clarifications for Part (B) of the
energy test cycle definition in appendix J2.
Based on comments from AHAM and manufacturers regarding confusion
about how the energy results from Part (B) are to be included in the
energy test cycle, today's final rule replaces the phrase ``shall also
include * * *'' with the phrase ``shall include, in addition to Part
(A) * * *.'' DOE believes that this change, coupled with the
clarification that Part (B) applies only to the TUFs not available in
the cycle selection used for Part (A), will remove ambiguity about how
to include the test results for Part (B). Consistent with the current
appendix J1 test procedure, the energy and water consumption measured
under Part (B) of the energy test cycle should be weighted by the
appropriate TUF and added to the weighted energy and water consumption
measured under Part (A).
Part (C) of the Proposed Definition
DOE did not receive any comments from interested parties regarding
Part (C) of the proposed definition of the energy test cycle. Today's
final rule modifies DOE's proposed language for Part (C) by revising
the reference to ``Part (A) and Part (B)'' so that Part (C) reads as
follows:
``All cycle selections included under Part (A) and all cycle
selections included under Part (B) shall be tested using each
appropriate load size as defined in section 2.8 and Table 5.1 of
this appendix.''
Because Part (A) refers to the specific cycle selection recommended
by the manufacturer for washing cotton or linen clothes, and Part (B)
refers to other alternate cycle selection(s), none of the cycle
selections included in the energy test cycle would be tested under both
Part (A) and Part (B). The revised Part (C) is applicable to the cycle
selected under Part (A) and all cycles included separately under Part
(B).
Part (D) and Part (E) of the Proposed Definition
Whirlpool agrees with DOE's proposal to specify that each cycle
included as part of the energy test cycle comprises the entire active
washing mode, and excludes any delay start or cycle finished modes.
(Whirlpool, No. 33 at p. 2)
NEEA disagrees with DOE's proposal to exclude delay start and cycle
finished modes as part of the active mode in the energy test cycle
definition. NEEA believes that these modes should be tested and
assigned appropriate usage factors. NEEA stated that certain clothes
washers offer delayed start and cycle finished mode options not
available in the normal cycle. NEEA acknowledged, however, the lack of
available data on delayed start and cycle finished mode, and stated its
intention to gather data on these modes for inclusion in the energy
test cycle definition during the next
[[Page 13917]]
opportunity to improve the test procedure. (NEEA, No. 31 at p. 2).
For the reasons described previously in sections III.B.2.b and
III.B.2.c, today's final rule does not require testing of delayed start
or cycle finished modes. Therefore, today's final rule is consistent
with DOE's proposal to specify that each wash cycle included as part of
the energy test cycle comprises the entire active washing mode, and
excludes any delay start or cycle finished modes. In today's final
rule, this clarification is provided in a new Part (E) of the energy
test cycle definition.
In addition, as described previously in section III.B.2.d, today's
final rule also does not require the testing of self-clean mode.
Therefore, today's final clarifies that the energy test cycle shall not
include any cycle, if available, that is dedicated for cleaning,
deodorizing, or sanitizing the clothes washer, and is separate from
clothes washing cycles. This should prevent confusion as to whether the
self-clean cycle should be considered eligible for testing under Part
(B) if, for example, the self-clean cycle used one of the temperature
selections not available in the cycle tested in Part (A) (e.g. extra-
hot). In today's final rule, this clarification is provided in a new
Part (F) of the energy test cycle definition.
New Section 2.13
AHAM proposed modifying the language in the newly proposed section
2.13 by: (1) Using the term ``temperature selection'' instead of
``temperature combination''; (2) specifying that testing under section
2.13 applies only to temperature selections for which TUFs have been
developed and TUFs not represented in the cycle setting represented in
Part (A) of the energy test cycle definition; and (3) specifying that
each TUF available on the product should be tested only once. Whirlpool
also suggested clarifying that section 2.13 applies only to temperature
selections for which TUFs have been developed. GE commented that it
agrees with AHAM's proposed modifications for section 2.13. (AHAM, No.
34 at pp. 6-7; Whirlpool, No. 33 at p. 2; GE, No. 35 at p. 2)
For the reasons described in the previous sections regarding the
energy test cycle definition, DOE concurs with AHAM and manufacturers'
suggestions regarding the term ``temperature selection'' and the need
to specify that testing under section 2.13 applies only to temperature
selections for which TUFs have been developed and which are not
represented in the cycle tested under Part (A).
DOE has determined that it is unnecessary and potentially confusing
to modify the language in section 2.13 to specify that each TUF
available on the product should be tested only once. The provisions set
forth in Part (B) of the revised definition of energy cycle clarify
that each TUF shall be tested once. DOE notes, however, that each TUF
being considered under the exploratory testing provisions of section
2.13 might need to be tested on different cycle selections to determine
which cycle selection uses the most energy. For these reasons, DOE does
not adopt the proposed clarification in section 2.13 that each TUF
available on the product should be tested only once.
Today's final rule also modifies the structure of section 2.13 by
separating the individual provisions into subsections 2.13.1 through
2.13.5, which should improve the clarity of this section.
Reporting Requirements
AHAM and GE requested clarification on what specific data will be
made public with regards to the alternate cycle settings tested in Part
(B). (AHAM, No. 34 at p. 7; GE, No. 35 at p. 2) Similarly, ALS
requested clarification regarding the requirement for manufacturers to
provide a list of all cycle settings comprising the complete energy
test cycle for each basic model. ALS requested that DOE make this
information publicly available to all interested parties. (ALS, No. 32
at p. 1).
DOE does not intend to make the list of all cycle settings
comprising the energy test cycle for each clothes washer publicly
available as part of a manufacturer's certification report. DOE will
respond to requests for this information pursuant to its Freedom of
Information Act regulations at 10 CFR part 1004. DOE acknowledges that
making this list publicly available could reveal a manufacturer's
proprietary strategies for achieving a competitive advantage over its
rivals. In addition, the information could be used to reverse-engineer
the products or test results of competitors. Irrespective of requests
from the public for this information, DOE notes that it may make this
information available to third party laboratories that would be
involved in future DOE-initiated compliance verification and
enforcement testing.
Today's final rule modifies the reporting requirements in 10 CFR
429.20 by specifying that a certification report shall include publicly
available information including MEF, WF, and capacity. The report would
also include the list of cycle settings comprising the complete energy
test cycle for each basic model, which DOE does not intend to make
publicly available as part of the report. The requirement to provide
the list of cycle settings comprising the complete energy test cycle
will apply only to test results obtained using appendix J2.
5. Capacity Measurement Method
The test procedure in appendix J1 requires measuring clothes
container capacity as ``the entire volume which a dry clothes load
could occupy within the clothes container during washer operation.''
The procedure involves filling the clothes container with water, and
determining the volume based on the weight of the added water divided
by its density. Specifically, the test procedure requires that the
clothes container be filled manually with either 60 [deg]F
5 [deg]F (15.6 [deg]C 2.8 [deg]C) or 100 [deg]F 10 [deg]F (37.8 [deg]C 5.5 [deg]C) water to its
``uppermost edge.''
DOE recognized that this specification of the water fill level
could lead to multiple interpretations and, in some cases, capacity
measurements that may not reflect the actual volume in which cleaning
performance of the clothes could be maintained. After considering
comments from interested parties on a proposed interpretation of the
existing methodology in appendix J1, DOE issued guidance on identifying
the maximum fill level using the appendix J1 test procedure. This
guidance, issued on July 26, 2010, is available at https://www1.eere.energy.gov/buildings/appliance_standards/residential/pdfs/cw_guidance_faq.pdf, hereafter referred to as the ``capacity
guidance.'' Figure III.1 and Figure III.2 show the schematics presented
in the capacity guidance, which indicate possible interpretations of
the maximum fill level in appendix J1.
[[Page 13918]]
[GRAPHIC] [TIFF OMITTED] TR07MR12.017
Figure III.1 indicates four possible fill levels for vertical axis
(top-loading) clothes washers:
---------------------------------------------------------------------------
\1\ DOE is aware of at least one top-loading, horizontal-axis
clothes washer on the market. Based on its geometry, the capacity
guidance for this type of clothes washer would be the same as the
guidance for front-loading, horizontal-axis clothes washers.
---------------------------------------------------------------------------
``Fill Level 1'' represents the level immediately below
the bottom edge of the balance ring, which typically corresponds to the
recommended maximum fill level according to manufacturer instructions.
``Fill Level 2'' represents the uppermost edge of the
rotating portion of the wash basket, which corresponds to the fill
level proposed in the September 2010 NOPR.
``Fill Level 3'' represents the highest point of the
inner-most diameter of the tub cover.
``Fill Level 4'' represents the highest edge on the tub
cover.
For the purpose of issuing guidance, DOE determined that the
maximum fill level referred to in the appendix J1 test procedure (i.e.,
the ``uppermost edge'') is the highest horizontal plane that a dry
clothes load could occupy with the clothes container oriented
vertically. For top-loading clothes washers, this is identified as Fill
Level 3 in Figure III.1.
In Figure III.2, the volumes contained within the dotted lines
indicate the fill volumes for horizontal-axis (both front-loading and
top-loading) clothes washers with convex doors, concave doors, or top-
loading doors.
DOE considered whether to amend the fill level specification in
this rulemaking to provide additional clarity and ensure that the
capacity is representative of the volume available to achieve real-
world cleaning performance. Prior to publication of the September 2010
NOPR, DOE conducted capacity tests on a sample of residential clothes
washers to observe how different interpretations of the maximum fill
level could lead to different measured capacities for the same machine.
For top-loading clothes washers, DOE's test sample showed that the
majority of rated capacity values varied from the Fill Level 3 value,
some by as much as 0.5 ft\3\. For front-loading clothes washers, the
majority of rated capacity values closely corresponded to DOE's
measured values according to the fill volume shown in the capacity
guidance.
DOE also tentatively concluded for top-loading clothes washers that
Fill Level 3, which was specified in the capacity guidance, may not
reflect the actual usable capacity for washing a load of clothes while
maintaining cleaning performance. This is because Fill Level 3 may
include space above the upper surface of the rotating wash tub or
balance ring. In most cases, if
[[Page 13919]]
clothes were located in that region during a wash cycle, that portion
of the load would likely not interact with water and detergent
properly, particularly since wash water cannot be contained between
Fill Level 2 and Fill Level 3 during operation. Entanglement of the
clothing could also occur.
Therefore, in the September 2010 NOPR, DOE proposed the following
fill levels to provide for a more representative capacity measurement:
For top-loading clothes washers, DOE proposed that the
clothes container be filled to the uppermost edge of the rotating
portion, including any balance ring. This corresponds to Fill Level 2
in Figure III.1.
For front-loading clothes washers, DOE proposed that the
clothes container be filled to the uppermost edge that is in contact
with the door seal.
For both top-loading and front-loading clothes washers, any volume
within the clothes container that a clothing load could not occupy
during active washing mode operation would be excluded from the
measurement.
BSH, the California Utilities, the Joint Commenters, and NEEA
support the proposal for measuring the volume of the clothes container.
BSH stated that if clothing should not occupy an area, that volume
should be excluded from the clothes container capacity measurement.
According to BSH, if an area not occupied by clothing were to be
measured, top-loading washers would have an unfair advantage over
front-loading washers, which have no such area. According to BSH, due
to the space needed for agitation, the volume of the clothes container
can be larger in top-loading washers, yet offer the consumer a smaller
available space to load clothing. (BSH, No. 17 at p. 4) The California
Utilities and NEEA agree that the capacity measurement should include
the entire volume that a dry clothes load could occupy within the
clothes container during washer operation. NEEA stated that this method
is an improvement over the previous guidance and will result in
consistent, accurate measurements for all clothes washer models.
(California Utilities, No. 18 at pp. 4-5; NEEA, No. 12 at p. 13; NEEA,
Public Meeting Transcript, No. 20 at p. 177) The Joint Commenters
stated that the proposed methodology would ensure that only the space
that is capable of being filled with clothes while maintaining proper
wash performance is included in the capacity measurement. (Joint
Commenters, No. 16 at p. 8).
AHAM, ALS, and Whirlpool oppose the proposed clothes container
capacity measurement. AHAM stated that the proposed methodology is
ambiguous and does not provide for a representative, repeatable, or
reproducible measurement of clothes container volume. AHAM stated that
DOE appears to be applying a new interpretation to an existing
definition, as there is no change in the definition of the clothes
container from the existing appendix J1 to the proposed appendix J2.
According to AHAM, there is significant harm in DOE continuing to
change its position on the capacity measurement procedure, as it
results in a lack of clarity and certainty to the industry, which in
turn creates confusion for consumers since machines need to be re-
tested and potentially re-rated (and thus, re-labeled) each time the
capacity measurement changes. AHAM further commented that the cost
associated with re-testing, re-rating, and re-labeling is significant.
(AHAM, No. 14 at p. 14) AHAM proposes that DOE codify the final
capacity guidance on clothes container capacity measurement without
change. AHAM and Whirlpool noted that a significant amount of work on
the part of DOE and stakeholders went into the capacity guidance, and
the result was a clear, repeatable, reproducible method for measuring
drum volume. AHAM and Whirlpool also stated that the capacity guidance
addresses the objective that the clothing remain within the clothes
container for an entire operating cycle, noting that filling the
clothes container slightly above the balance ring with dry clothing
will cause the clothing to remain in the clothes container during the
entire operating cycle, because clothes sink as they are wetted. (AHAM,
No. 14 at pp. 14-15; AHAM, Public Meeting Transcript, No. 20 at pp.
165-167; Whirlpool, No. 13 at p. 12; Whirlpool, Public Meeting
Transcript, No. 20 at pp. 167-168, 173-174) Whirlpool stated that its
field use studies have shown that customers load the clothes container
above the fill level specified in the capacity guidance, and that the
maximum load size specified in the DOE test procedure, when loosely
loaded, exceeds that fill level. Whirlpool further noted that the
Underwriters Laboratories (UL) safety test limit for clothes washers is
an even higher fill level. Whirlpool commented that measurements at the
fill level specified in the capacity guidance can be as repeatable and
reproducible as the proposed fill level. Whirlpool suggested that if
DOE questions repeatability and reproducibility, it could require
manufacturers to mold a mark at the point on the tub cover at which the
clothes container capacity measurement is taken. (Whirlpool, No. 13 at
p. 12) ALS opposes the proposed clothes container capacity measurement,
stating that manufacturers have based their designs on DOE's capacity
guidance for appendix J1. According to ALS, top-loading clothes washers
would be rated as having a lower capacity under DOE's proposal because
``the uppermost edge of the rotating portion'' is typically below the
fill level defined in the capacity guidance. (ALS, No. 10 at p. 4).
DOE believes that the procedure for measuring clothes washer
capacity should reflect the actual usable capacity for washing clothes
while maintaining cleaning performance. For front-loading clothes
washers, interested parties generally support the proposed methodology
for measuring clothes container capacity. For top-loading clothes
washers, DOE acknowledges the effort that went into developing the
capacity guidance for the current appendix J1 test procedure. DOE
believes that, given the construct of the capacity measurement
procedure in appendix J1, the capacity guidance provides improved
clarity, repeatability, and reproducibility to the current test
procedure. For this rulemaking, however, DOE re-evaluated all aspects
of the clothes container capacity measurement and concluded that the
capacity measurement specified in appendix J2 maximizes clarity,
repeatability, reproducibility, and consumer relevance.
First, while DOE did not change the definition of ``clothes
container'', the upper boundary of the ``clothes container'' is not
explicitly defined in the current clothes washer test procedure at
appendix J1. Section 3.1 of appendix J1 requires the measurement of
``the entire volume which a dry clothes load could occupy within the
clothes container during washer operation.'' DOE did not propose to
change the language in section 3.1 for appendix J2 in the September
2010 NOPR. After considering comments on the related proposal to amend
the fill level in section 3.1.4, however, DOE acknowledges that a
volume of dry clothing may not correspond to the same volume of wet
clothing in a clothes washer, because loosely packed clothing often
compacts once it becomes wet. The maximum volume of a dry clothing load
could vary considerably based on the density, stiffness, absorption,
and other properties of the material composition. Therefore, DOE
concludes that it is not meaningful to base the capacity measurement on
the volume that dry clothes could occupy. Instead, the revised capacity
measurement provisions in today's final
[[Page 13920]]
rule, particularly those for top-loading clothes washers, more
appropriately represent the actual usable volume of the clothes
container during the active mode portion of washer operation. Today's
final rule provides revised language in section 3.1 of appendix J2 that
removes the qualification that the clothes load be dry, and instead
specifies that the clothes load could occupy the volume during ``active
mode washer operation.''
In determining the appropriate fill level for the capacity
measurement, DOE notes that the current capacity guidance is
accompanied by a set of diagrams illustrating Fill Level 3 for a
variety of top-loading clothes washer tub cover designs. DOE has,
however, observed significant variation in tub cover designs among
products from different manufacturers, as well as within individual
manufacturers' product lines, and DOE continues to receive requests for
clarification on tub cover shapes not included in the diagrams. In
addition, DOE has observed some tub covers with varying heights around
the inner-most diameter, and in these cases, the ``highest point of the
inner-most diameter'' may not be the most appropriate fill height. For
these machines, determining the maximum fill level can require the
subjective judgment of the test laboratory. DOE's testing indicates
that Fill Level 2, as proposed in the September 2010 NOPR and defined
as ``the uppermost edge of the rotating portion, including any balance
ring,'' provides a much clearer reference point. DOE has observed
significantly less variation in balance ring designs among
manufacturers compared to tub cover designs. For these reasons, DOE has
determined that Fill Level 2 offers greater clarity than Fill Level 3,
which would also result in greater repeatability and reproducibility.
DOE also believes that the proposed Fill Level 2 is more consumer-
relevant than Fill Level 3. DOE acknowledges that if a consumer loaded
a top-loading machine with clothing as high as Fill Level 3 (or
higher), the clothing would likely sink to a lower level within the
clothes container as the load is wetted. DOE has observed, however,
that virtually all of the clothes washer user manuals it reviewed
direct the consumer to load clothing no higher than the highest drain
holes in the wash basket, which typically corresponds to the point at
which the wash basket meets the lower edge of the balance ring
(corresponding to Fill Level 1 in Figure III.1). DOE believes that, by
respecting manufacturer recommendations, Fill Level 1 would best ensure
wash performance is maintained, and thus is the most consumer-relevant.
DOE further believes that should clothing occupy the space between Fill
Level 1 and Fill Level 2 during a wash cycle, the clothing could be
cleaned sufficiently because water can still be contained within that
volume. Clothing above Fill Level 2, however, is not likely to be
cleaned sufficiently because it would be outside the wash basket during
the wash cycle. Additionally, clothing that occupies space above Fill
Level 2 risks being damaged if it becomes entangled on stationary
fixtures such as the tub cover or other mechanical components of the
washer during the wash cycle.
Furthermore, certain design changes to the shape of the inner
diameter of the tub cover (Fill Level 3) can be incorporated that would
result in an increase of the measured capacity with no corresponding
increase in real-world usable capacity, because wash water cannot be
contained between Fill Level 2 and Fill Level 3. Increasing the height
of the balance ring (Fill Level 2), however, would correspond to a real
increase in usable capacity from the consumer's perspective, since the
wash water could be contained up to the top of the balance ring.
For these reasons, today's final rule adopts the clothes container
capacity measurement provisions for top-loading clothes washers as
proposed in the September 2010 NOPR. The change will be incorporated
into appendix J2, which will not need to be used to demonstrate
compliance until the compliance date of any amended standards for these
products.
Whirlpool stated that, to achieve parity between top-loading and
front-loading machines using the proposed clothes container capacity
measurement, the test procedure when applied to front-loading clothes
washers must (1) require removal of the bellows prior to measurement;
and (2) require that the shipping bolts remain in place, as was
specified in the capacity guidance, to prevent sagging of the basket
when the machine is tipped on its back. (Whirlpool, No. 13 at p. 13;
Whirlpool, Public Meeting Transcript, No. 20 at pp. 178-180) BSH stated
that the definition of shipping bolts is not clear. (BSH, Public
Meeting Transcript, No. 20 at p. 179).
For front-loading clothes washers, DOE agrees that the shipping
bolts should remain in place during the capacity measurement to prevent
the clothes container from sagging downward when filled with water,
which would stretch the door gasket (also referred to as the bellows),
creating additional volume that the clothes load could not occupy
during actual washer operation. Downward sagging could also cause
damage to the clothes container structure during the test. DOE has also
determined that the gasket should remain in place for the capacity
measurement, because some portion of the gasket may occupy the volume
available for the clothes load when the door is closed, and this volume
should be excluded from the measured capacity. For these reasons,
today's final rule adds to the provisions proposed in the September
2010 NOPR by specifying that the shipping bolts and door gasket shall
remain in place during the capacity measurement for front-loading
clothes washers.
AHAM, the California Utilities, LG, NRDC, and Springboard commented
that DOE should add diagrams to the test procedure for clarity in
interpreting the clothes container capacity measurement, similar to
what was provided in the capacity guidance. LG further stated that the
diagram for top-loading clothes washers should label the balance ring
to indicate the fill level. (AHAM, Public Meeting Transcript, No. 20 at
pp. 174-175; California Utilities, No. 18 at pp. 4-5; LG, Public
Meeting Transcript, No. 20 at pp. 177-178; NRDC, Public Meeting
Transcript, No. 20 at p. 175; Springboard, No. 11 at p. 1) NRDC
requested clarification as to whether the clothes container capacity
for front-loading clothes washers should be measured with the door
opened or closed. (NRDC, Public Meeting Transcript, No. 20 at pp. 161-
165).
DOE has observed a broad range of designs and configurations of the
key components of the clothes container among products already
available on the market, and expects that other designs could be
introduced in future clothes washers. DOE will continue to publish the
fill level diagrams, updated as necessary for new designs, on its Web
site at https://www1.eere.energy.gov/buildings/appliance_standards/residential/clothes_washers.html.
6. Test Cloth, Detergent, and Preconditioning Test Equipment
Multiple interested parties submitted comments regarding the use of
test cloth in response to the August 2009 standards framework document.
Based on these comments, DOE proposed in the September 2010 NOPR a
number of amendments related to test cloth, detergent, and other
preconditioning test equipment.
DOE received multiple comments that generally responded to DOE's
proposed test cloth provisions. AHAM submitted recommendations for test
cloth specifications, and commented that DOE should incorporate them to
[[Page 13921]]
improve reproducibility. (AHAM, No. 2 at p. 23; AHAM, No. 14 at p. 14)
Some of AHAM's comments reflect the recommendations of the AHAM Energy
Test Cloth Task Force, which was formed in February 2008 to identify
and address appliance manufacturers' concerns pertaining to Lot 15 test
cloth. The specific objectives of the AHAM Energy Test Cloth Task Force
were to investigate test cloth consistency and RMC measurement process
variation. The Task Force is comprised of BSH, Electrolux, General
Electric, Samsung, Whirlpool Corporation, and SDL Atlas. (AHAM, No. 4
at p. 4) ALS stated that it supports AHAM's test cloth proposal. (ALS,
No. 10 at p. 4) NEEA commented that the proposed test cloth procedures
and specifications are reasonable. (NEEA, No. 12 at p. 13) Whirlpool
supports the proposed test cloth changes with additional
recommendations for extractor testing. (Whirlpool, No. 13 at p. 11-12)
The sections below provide additional details regarding each proposed
amendment related to the test cloth, as well as responses to comments
on specific test cloth provisions proposed in the September 2010 NOPR
and August 2011 SNOPR.
Test Cloth Definitions
In response to the September 2010 NOPR, AHAM commented that a test
cloth ``lot'' should be defined as ``a quantity of cloth that has been
manufactured with the same batches of cotton and polyester during one
continuous process. The cotton and polyester for each lot can come from
only one supplier. The supplier is responsible for manufacturing the
raw materials consistently to ensure uniformity.'' AHAM also
recommended that ``roll'' be defined as ``a subset of a lot.'' AHAM
stated that a requirement should be added to section 2.6.1 that all
energy test cloth must be permanently marked, identifying the roll
number as well as lot number of the material, and that in section
2.6.5.2, ``[t]est loads shall be comprised of randomly selected cloth
at the beginning, middle, and end of a lot.'' AHAM commented that the
test procedure should contain test cloth quality control provisions for
identifying the roll number and evaluating the consistency of the lot
by means of an advisory board, which would approve the lot of test
cloth prior to sale, ensuring that the coefficient of variation from
the average RMC value from each roll would be less than 1 percent.
According to AHAM, the advisory board would consist of a representative
from DOE, AHAM, each automatic washer appliance manufacturer, and test
cloth supplier, and that the board's purpose would be to review and
approve each new test cloth lot, new cloth suppliers, and correction
factor test facilities. (AHAM, No. 4 at p. 4; AHAM, No. 14 at pp. 14,
19-20, 23, 26, 28)
DOE's test procedure is intended to define material properties of
the test cloth sufficiently narrowly as to ensure accuracy and
repeatability of the test procedure, and provide procedures to
normalize test results to account for allowable variations in the test
cloth properties. DOE notes that a supplier may elect to provide
additional identifying information, including roll number, on the test
cloth as it deems appropriate. DOE agrees with AHAM that definitions of
``lot'' and ``roll'' would clarify the existing provisions regarding
the energy test cloth, and is adopting in today's final rule the
definition of lot as ``a quantity of cloth that has been manufactured
with the same batches of cotton and polyester during one continuous
process.'' The specification of ``same batches of cotton and polyester
during one continuous process'' essentially requires these raw
materials to come from a single supplier; therefore, DOE is not
including such a qualification in the definition. DOE is also adopting
in today's final rule the definition of ``roll'' as ``a subset of a
lot.''
Energy Test Cloth Size and Weight Tolerances
The existing clothes washer test procedure does not specify any
tolerances for the size and weight of the energy test cloths. In the
September 2010 NOPR, DOE proposed the following tolerances for the test
cloth:
In section 2.6.1, ``Energy Test Cloth,'' the energy
test cloth shall be 24 \1/2\ inches by 36
\1/2\ inches (61.0 1.3 cm by 91.4 1.3 cm)
and hemmed to 22 \1/2\ inches by 34 \1/2\
inches (55.9 1.3 cm by 86.4 1.3 cm) before
washing;
In section 2.6.2, ``Energy Stuffer Cloth,'' the energy
stuffer cloth shall be 12 \1/4\ inches by 12 \1/4\ inches (30.5 .6 cm by 30.5 .6
cm) and hemmed to 10 \1/4\ inches by 10
\1/4\ inches (25.4 .6 cm by 25.4 0.6 cm)
before washing; and
In section 2.6.4.2, the fabric weight specification
shall be 5.60 0.25 ounces per square yard (190.0 8.4 g/m\2\).
In addition, DOE proposed to create a new specification for maximum
shrinkage in section 2.6.4.7 based on the American Association of
Textile Chemists and Colorists (AATCC) Test Method 135-2004. DOE
proposed to increase the previous shrinkage limit from four percent to
five percent. In the August 2011 SNOPR, DOE proposed using the most
recent version of this standard, AATCC Test Method 135-2010.
AHAM commented that the test cloth dimensional properties should be
refined to match supplier capability, including length, width, fabric
weight, and shrinkage properties. (AHAM, No. 4 at p. 4) DOE notes that
the size tolerances and test cloth weight proposed in the September
2010 NOPR are identical to those in AHAM's proposed changes to the DOE
clothes washer test procedure, which AHAM included as part of its
written comment. AHAM noted in the written comment that these
specifications were supported by supplier data, and thus DOE is
adopting the proposed test cloth dimensions and weight in today's final
rule.
AHAM supports DOE's proposal to add the newly referenced AATCC Test
Method 135 for measuring shrinkage of the energy test cloth, and
supports increasing the shrinkage limit from four percent to five
percent. Today's final rule specifies a maximum shrinkage limit of five
percent, to be measured using AATCC Test Method 135-2010. (AHAM, No.,
14 at p. 16; AHAM, No. 24 at p. 5).
Detergent Specification and Dosage
In the September 2010 NOPR, DOE proposed amending the clothes
washer test procedure to specify the use of the AHAM standard test
detergent Formula 3 in test cloth preconditioning, at a dosing of 27.0
g + 4.0 g/lb.
ALS supported DOE's proposal to specify the use of AHAM standard
detergent Formula 3 in test cloth preconditioning as well as the
proposal to follow the instructions included with the detergent,
because it makes the dosing identical to that of the dryer test load
preconditioning procedure. (ALS, No. 10 at p. 5) NEEA stated that it
foresees no problem with, and some benefit from, adopting the AHAM
detergent specification. (NEEA, No. 12 at p. 14) Whirlpool stated that
the proposed detergent formulation and dosage changes are consistent
with AHAM Standard HLD-1-2009, which Whirlpool supports. (Whirlpool,
No. 13 at p. 14; Whirlpool, No. 27 at p. 4) AHAM supported DOE's
proposal to amend the test procedure to specify the use of AHAM
standard test detergent Formula 3 in test cloth preconditioning at a
dosing of 27.0 g + 4.0 g/lb (AHAM, No. 14 at p. 15; AHAM, Public
Meeting Transcript, No. 20 at pp. 194-195; AHAM, No. 24 at p. 6).
For the reasons stated above and in the September 2010 NOPR,
today's final rule specifies the use of AHAM standard
[[Page 13922]]
test detergent Formula 3 in test cloth preconditioning, at a dosing of
27.0 g + 4.0 g/lb, in both appendix J1 and the new appendix J2.
Test Cloth Preconditioning Wash Requirements
Section 2.6.3.1 of the current DOE clothes washer test procedure
specifies preconditioning the test cloths using a clothes washer in
which the load can be washed for 10 minutes at the maximum water level
and a wash temperature of 135 [deg]F 5 [deg]F (57.2 [deg]C
2.8 [deg]C).
DOE noted in the September 2010 NOPR that multiple manufacturers
expressed concern during manufacturer interviews that there are
currently few clothes washers commercially available that meet these
requirements. The manufacturers also expressed concern that the more
stringent energy conservation standards that may result from the
residential clothes washer standards rulemaking may eliminate such
clothes washer models from the market entirely. DOE did not propose any
updates to the preconditioning clothes washer specifications in the
September 2010 NOPR, but sought information regarding an alternative
specification for the clothes washer to be used for preconditioning
that would allow for the use of more recent models.
DOE received the following information and comments from interested
parties regarding the clothes washer requirements for test cloth
preconditioning.
ALS stated that clothes washers will be available after the next
DOE minimum efficiency standards for clothes washers take effect that
can adequately precondition the test cloth. ALS believes there is
adequate time to learn of any differences that may occur with new
clothes washer designs. Furthermore, ALS suggested that manufacturers
and certification test labs could purchase and maintain inventory of
the current design of agitator-style, vertical-axis clothes washers
that ALS manufactures. (ALS, No. 10 at p. 5).
Whirlpool stated that top-loading clothes washers with a deep-fill
rinse option will continue to be available for quite some time.
Agitator-based models may no longer be viable at some point in the
future, but impeller-based models should be available. (Whirlpool, No.
13 at p. 14).
AHAM stated that the key attributes for the clothes washer used for
preconditioning are that it be able to achieve good rinsing and be able
to get the test cloth to its final size. AHAM stated that there will be
clothes washers capable of good rinsing and getting the test cloth to
its final size at least through year 2018. AHAM stated that
manufacturers may need to select a fabric softener cycle to achieve
those goals, for example, but the goals are workable with current
machines. (AHAM, No. 14 at p. 16).
BSH commented that it does not foresee any problems meeting the
test cloth pre-conditioning method outlined by DOE. The method asks for
maximum water level and a fixed temperature for wash and rinse water.
BSH stated that it can internally create a clothes washer that meets
the specified temperatures. BSH added that since maximum water level is
not defined as a specific quantity, using the maximum water level for
washing in BSH clothes washers would meet the standard. (BSH, No. 17 at
p. 5; BSH, Public Meeting Transcript, No. 20 at p. 198-199) BSH
commented further that it does not want to see one specific product
model specified for pre-conditioning, as this would limit the ability
to keep current equipment in laboratories. As the model is replaced in
the market by its manufacturer, access and ability to test would be
affected in all laboratories. BSH supports AHAM's comment that the
primary goals are to achieve good rinsing and assure that the cloth
reaches its final size before testing. (BSH, No. 17 at p. 5) As an
alternative, BSH would support the IEC test cloth pre-conditioning
method if the Department believes it to be appropriate. (BSH, No. 17 at
p. 5).
NEEA commented that participants at the October 2010 public meeting
generally agreed that the clothes washer characteristics specified for
test cloth preconditioning may no longer be available, or will soon be
unavailable. According to NEEA, it was not made clear by manufacturers
at the meeting exactly which characteristics were a problem, i.e.,
relatively high water temperature, a ten minute wash, or the ability to
specify the water level. NEEA believes the best course of action would
be to provide the rationale for the current specifications, and then
propose an alternative set of clothes washer specifications that
manufacturers could assure DOE will be commonly available, yet would
result in preconditioning performance that closely approximates that of
the current specification. (NEEA, No. 12 at p. 14; NEEA, Public Meeting
Transcript, No. 20 at pp. 200-201).
DOE's intended goals for the test cloth preconditioning are to
remove any chemical residues or other finishes that may be present on
the surface of the test cloth and to subject each test cloth to a
series of wash/rinse/dry cycles to induce any shrinking that may occur,
so that each test cloth achieves its final size before being used for
testing. Achieving these goals requires the use of detergent, an
adequate quantity of hot water for the wash and cold water for the
rinse, and a minimum temperature in the preconditioning dryer.
In consideration of comments from interested parties, DOE expects
that clothes washers capable of meeting the test cloth preconditioning
requirements will continue to be available after the revised energy
efficiency standards for clothes washer become effective. Based on the
recommendations provided by AHAM, DOE amends the test cloth
preconditioning requirements to specify that a minimum of 20 gallons of
water be used in each wash/rinse/spin cycle during test cloth
preconditioning. However, DOE is not otherwise changing the
preconditioning requirements of section 2.6.3.1.
AATCC Test Methods
Section 2.6.4.5.3 of the existing test procedure incorporates by
reference standards for verifying the absence of water repellent
finishes on the energy test cloth: AATCC Test Method 118-1997, ``Oil
Repellency: Hydrocarbon Resistance Test'' and AATCC Test Method 79-
2000, ``Absorbency of Textiles.'' To be consistent with referenced
standards in other DOE test procedures, DOE proposed in the September
2010 NOPR to remove this paragraph from the clothes washer test
procedure and, instead, include these two AATCC test procedures in 10
CFR part 430.3, ``Materials Incorporated by Reference.'' In addition,
DOE proposed adding to 10 CFR part 430.3 the newly-referenced AATCC
Test Method 135-2004, ``Dimensional Changes of Fabrics after Home
Laundering'' for measuring shrinkage of the energy test cloth, which is
referenced in section 2.6.4.7 of the revised test procedure.
AHAM supports DOE's proposal to move the reference to standards
incorporated by reference from the test procedure in appendix J1 to the
regulatory text at 10 CFR 430.3. The reference will also be applicable
to appendix J2. (AHAM, No. 14 at p. 16)
For the reasons stated above and in the September 2010 SNOPR,
today's final rule implements the changes proposed in the September
2010 NOPR, as described above. Today's final rule also corrects a
typographical error from the November 2011 SNOPR in the mailing address
for AATCC. The correct address is P.O. Box 12215. Today's final rule
also updates the contact telephone number to (919) 549-3526, which is
listed on the cover page of the current versions of the AATCC
standards.
[[Page 13923]]
Required Extractor Tests
The current DOE test procedure uses extractor tests of up to 500
units of gravitational acceleration (g, or g-force) in determining the
RMC correlation curve for test cloth lots. DOE is aware of clothes
washers currently available on the market capable of reaching g-forces
higher than 500 g.
DOE therefore proposed in the September 2010 NOPR to include an
additional set of extraction tests at 650 g. Because of the prevalence
of higher spin speeds in clothes washers available on the market, DOE
also proposed to remove the requirement that the 500 g condition be
required only if a clothes washer can achieve spin speeds in the 500 g
range. These proposed amendments would result in 60 extractor RMC test
runs being required for correlation testing rather than the currently-
required 48. DOE also proposed to update Table 2.6.5--Matrix of
Extractor RMC Test Conditions, and Table 2.6.6.1--Standard RMC Values
(RMC Standard) in the test procedure to include tests at 650 g. The
proposed updated Table 2.6.6.1 is shown below as Table III.5, and it
contains the additional standard RMC values at 650 g that were
suggested by AHAM and supported by the AHAM Energy Test Cloth Task
Force.
Table III.5--Standard RMC Values (RMC Standard)--Proposed in September 2010 NOPR
----------------------------------------------------------------------------------------------------------------
RMC percentage
---------------------------------------------------
Warm soak Cold soak
``g Force'' ---------------------------------------------------
15 min. 15 min.
spin 4 min. spin spin 4 min. spin
----------------------------------------------------------------------------------------------------------------
100......................................................... 45.9 49.9 49.7 52.8
200......................................................... 35.7 40.4 37.9 43.1
350......................................................... 29.6 33.1 30.7 35.8
500......................................................... 24.2 28.7 25.5 30.0
650......................................................... 23.0 26.4 24.1 28.0
----------------------------------------------------------------------------------------------------------------
In response to the September 2010 NOPR, AHAM reiterated its
recommendation to require the 500 g condition for all test cloth lots
and to add a 650 g condition to the extractor RMC test runs to reflect
higher spin speeds in current clothes washers. AHAM also supported the
standard RMC values proposed for each of these extraction conditions.
(AHAM, No. 4 at p. 4; AHAM, No. 14 at pp. 26-28).
Today's final rule is consistent with the September 2010 NOPR. It
requires the 500 g extraction for all test cloth lots and adds a 650 g
extraction test in Table 2.6.5 and Table 2.6.6.1 of the revised test
procedure.
Extractor Specification
In the September 2010 NOPR, DOE proposed to update the manufacturer
specified for the extractor from Bock Engineered Products to North Star
Engineered Products, Inc. DOE also noted that North Star Engineered
Products, Inc. operates at the same location and supplies the same
model of extractor as the previously specified Bock Engineered
Products.
AHAM and Whirlpool agreed that the standard extractor RMC tests
should be run in a North Star Engineered Products, Inc. (formerly Bock)
Model 215 extractor, but added that the basket diameter should be 20
inches and the basket height should be 11.5 inches. (AHAM, No. 14 at p.
26; Whirlpool, No. 13 at p. 11) AHAM and Whirlpool stated that the
extractor should be calibrated to meet the acceleration profiles shown
in Table III.6 (AHAM, No. 14 at p. 26; Whirlpool, No. 13 at p. 11):
Table III.6--AHAM and Whirlpool-Recommended Extractor Calibration
------------------------------------------------------------------------
RPM/S (spin-
RPM ``g'' Force up
acceleration)
------------------------------------------------------------------------
594 5.......................... 100 46 3
840 5.......................... 200 42 3
1111 5......................... 350 38 3
1328 5......................... 500 36 3
1514 5......................... 650 35 3
------------------------------------------------------------------------
AHAM and Whirlpool stated that the timers for different extractors
made by the same manufacturer start measuring time at different
conditions; i.e., they may start timing immediately when the extractor
starts or they may start timing only when the requested spin speed is
attained. AHAM and Whirlpool requested that DOE clarify the start time
for extractor tests. (AHAM, No. 14 at p. 26; Whirlpool, No. 13 at p.
11).
DOE concurs with AHAM and Whirlpool that the extractor model and
basket dimensions should be updated to accurately describe the North
Star Engineered Products Inc., (formerly Bock) Model 215 extractor.
Regarding AHAM and Whirlpool's suggested extractor calibration, DOE
agrees that the nominal revolutions per minute (RPM) listed in Table
III.6 will produce the desired g-force levels for a 20-inch diameter
basket. However, DOE's analysis indicates that specifying an allowable
range of 5 RPM would result in too large of a deviation
from the specified g-force. Section 2.6.5.3.3 in the current test
procedure allows a 1 g deviation from the intended
centripetal acceleration level for each extractor test, and today's
final rule maintains this tolerance in the amended test procedure. DOE
notes that for an extractor basket with a 20-inch diameter, a deviation
of 5 RPM at the 100 g-force level would result in a 2 g deviation in g-force level; (i.e., a spin speed of 599 RPM--
instead of the nominal 595 RPM--would result in 102 g-force). Likewise,
a deviation of 5 RPM at the 650 g-force level would result
in a 4 g deviation in g-force level. Therefore, today's
final rule specifies an allowable range of 1 RPM for the
extractor spin speed. This will ensure that the maximum 1 g
deviation from the intended g-force level will be maintained for each
spin speed. Based on DOE's internal extractor testing, DOE has observed
that the North Star Model 215 extractor is capable of maintaining the
spin speeds within 1 RPM.
AHAM and Whirlpool also suggested specifying the allowable spin-up
time for each test, implicitly determined by the acceleration noted in
the column labeled RPM/S in Table III.6. This suggestion was coupled
with another to start the extractor and the test timer simultaneously.
However, DOE has observed that the user is unable to adjust the spin-up
time on the North Star Model 215 extractor, and therefore, specifying
the spin-up time in the test procedure could provide too rigid of a
constraint. Additionally, because the amount of water extracted depends
primarily on the g-force exerted on the test cloth, and because the g-
force varies as a function of the square of RPM, the
[[Page 13924]]
period of time spent at full spin speed will affect the amount of water
extracted much more than the time spent during the extractor spin-up
and spin-down periods. Therefore, DOE believes that specifying the time
spent at full spin speed is more important than specifying a total test
time that would include the spin-up and spin-down time. For these
reasons, today's final rule specifies that the timer shall begin when
the extractor reaches the full required spin speed, but does not
specify an allowable spin-up time for each test. DOE believes that this
approach will provide the most consistent, repeatable test results
among all laboratories. DOE is aware that the timer and control system
on the North Star Model 215 extractor can be upgraded, if necessary, so
that the timer automatically starts when the extractor reaches full
speed.
Bone Dryer Specifications
In the September 2010 NOPR, DOE proposed to update the requirements
for bone drying the test cloth in preparation for determining the RMC
of the test loads in the extractor tests. The proposal included a
requirement in section 2.12 for using a clothes dryer capable of
heating the test cloth to above 210 [deg]F (99 [deg]C).
AHAM and Whirlpool suggested clarifications to the methodology for
the bone drying procedure used before each extractor test run.
According to AHAM, the procedure would state, ``Place dry load in a
dryer and dry for 10 to 40 minutes depending on the load size. Remove
and weigh before cool down. Continue drying for 10 minute periods until
the weight change is 1% or less.'' AHAM and Whirlpool commented that
the dryer performance requirements should state, ``Dryer used for bone
drying must heat cloth above 210 deg F (99 deg C).'' AHAM added the
recommendation to ``[r]ecord the end of cycle bone dry test cloth
temperature at the end of the cycle.'' (AHAM, No. 14 at p. 26;
Whirlpool, No. 13 at p. 11).
Based on AHAM and Whirlpool's comments in support of DOE's
proposal, today's final rule adds a requirement that the dryer used for
bone drying must heat the test cloth above 210 [deg]F (99 [deg]C). DOE
determined that specifying the duration and methodology of the bone
drying procedure to be used during the extractor tests, as AHAM
suggested, would be redundant because the definition of ``bone-dry''
already includes this information. Today's final rule specifies the
bone drying methodology to be used during the extractor tests by
referring to the definition of ``bone-dry'' in the definitions section
of the test procedure, which will achieve the same objective as AHAM's
proposal.
Today's final rule does not incorporate AHAM's recommendation to
record the bone-dry test cloth temperature at the end of the cycle. DOE
believes that this would add additional test burden with little
corresponding benefit to the overall results of the test procedure. The
temperature measurement of the test cloth at the end of the dryer cycle
would need to be performed immediately upon termination of the dryer
cycle, before the test cloth could begin to cool down. This could
present a logistical challenge depending on the sequence of tests and
the number of laboratory technicians performing the tests. In addition,
AHAM did not specify a method for measuring the temperature of the test
cloths, which would be necessary to ensure accuracy and repeatability.
DOE believes that the amended bone dryer temperature specification,
combined with the definition of ``bone-dry'' already included in the
test procedure definitions section, provide a sufficient level of
detail for conducting the test cloth extractor tests.
Procedures for Preparing and Handling Test Cloth Bundles
In the September 2010 NOPR, DOE proposed clarifications to the
requirements for bundling and draining the test cloth prior to
completing the extractor spin cycles. These clarifications included
procedures to create loose bundles of four test cloths each, as well as
time limits of 5 seconds for gravity draining the bundles after soaking
and 1 minute for overall draining and loading of all bundles into the
extractor.
AHAM's comments on the September 2010 NOPR included additional
recommended specifications for test cloth preparation. Regarding the
soak period for the test cloth prior to extraction testing, AHAM
suggested adding the requirement to maintain the temperature ``at all
times between the start and end of the soak'' to the water soak
temperature requirement currently in section 2.6.5.3.2 of appendix J1.
(AHAM, No. 14 at p. 27).
AHAM further provided recommended clarifications for the test cloth
used in the extractor tests. According to AHAM, the test load should be
comprised of randomly selected cloth at the beginning, middle, and end
of a lot, and that it would be acceptable to use two test loads for
standard extractor RMC tests, with each load used for half of the total
of 60 tests. AHAM commented that a testing constraint is the
approximate 25-minute ``soak and load'' time for the test cloth, which
results in the standard RMC extractor tests taking a week to complete.
AHAM stated that with two loads, one load could be soaking while the
other load was spinning. (AHAM, No. 14 at p. 26).
DOE supports AHAM's suggestion to add a requirement to maintain the
required temperature at all times between the start and end of the
soak, which will help eliminate variability in the extractor test
results. Today's final rule incorporates this requirement. DOE also
supports AHAM's suggestion that the test loads for the extractor tests
be comprised of randomly selected cloth from the beginning, middle and
end of a lot. This requirement will provide more consistent results and
will reduce variability that could occur as a result of material
variations within a single test cloth lot. DOE also concurs that
allowing two test loads would significantly reduce the test burden
required for performing the standard extractor RMC tests. Therefore,
today's final rule allows the use of two test loads for the standard
extractor RMC tests.
Based on recommendations from the AHAM Energy Test Cloth Task
Force, DOE proposed in the September 2010 NOPR to specify that it not
be necessary to dry the test load between extraction runs; however, the
bone dry weight would need to be checked after every 12 extraction runs
to ensure the bone dry weight is still within tolerance. In response to
the September 2010 NOPR, AHAM noted that the first test cloth soak
after bone drying absorbs less water. Therefore, AHAM suggested that
the test procedure require the test load to be soaked and extracted one
time following bone drying, before continuing with the remaining RMC
tests. This single post-bone-drying extraction would be run at the
speed currently being tested, and would last for four minutes. (AHAM,
No. 14 at p. 27).
Based on AHAM's comment that the first test cloth soak after bone
drying absorbs less water, DOE agrees that the first soak/extraction
cycle after bone drying should not be used as a data point in the
standard extractor RMC tests. Therefore, DOE adopts AHAM's suggestion
and requires that the test load be soaked and extracted for one time
following bone drying before continuing with the remaining RMC tests.
[[Page 13925]]
Clarification of the RMC Nomenclature and Application of the RMC
Correction Curve
In the September 2010 NOPR, DOE proposed to modify the nomenclature
used for RMC values that are intermediates in the calculation of a
final RMC. The proposed change clarified that the RMC values used in
section 3.8.4 of appendix J1 are the values obtained from either
section 3.8.2 or 3.8.3. AHAM supports this modification. (AHAM, No. 14
at p. 16).
Additionally, during DOE's ENERGY STAR testing and verification
program \12\ in April 2011, test laboratories raised questions
regarding the application of the RMC correction factors as described in
section 2.6.7 of the current appendix J1 test procedure. Specifically,
the test procedure does not explicitly describe how to apply the RMC
correction factors in the RMC equations in section 3.8. For example, if
the calculated value of RMCmax in section 3.8.2.5 is 0.455
(or 45.5%), a laboratory could incorrectly apply the correction factor
by applying it to the number 45.5 rather than to the fractional value
0.455, to which it should be applied. In addition, for clothes washers
with both cold and warm rinse, or with multiple spin speeds, the test
procedure does not instruct whether to apply the RMC correction factors
before or after combining the component RMC values in sections 3.8.3.3
or 3.8.4 of appendix J1.
---------------------------------------------------------------------------
\12\ Details about DOE's ENERGY STAR testing and verification
program available at https://www1.eere.energy.gov/buildings/appliance_standards/energy_star_testing_verification.html.
---------------------------------------------------------------------------
To resolve this ambiguity, DOE clarifies the RMC nomenclature and
RMC correction calculations throughout section 3.8 of the revised test
procedure. Specifically, DOE explicitly defines the RMC correction
equations and clarifies the order in which the RMC corrections should
be performed for clothes washers with both cold and warm rinse and/or
multiple spin speeds.
DOE has also discovered a typographical error in the formula given
in section 2.6.6.1 of the test procedure. That formula and the
accompanying text provide the means of deriving the linear least-
squares coefficients A and B, which relate the extractor-measured RMC
values of section 2.6.5 (RMCcloth) and the standard RMC
values in Table 2.6.6.1 (RMCstandard). Currently in appendix
J1, section 2.6.6.1 includes the formula (RMCcloth):
RMCstandard ~ A * RMCcloth + B. However, the
notation ``(RMCcloth):'' was incorrectly transcribed from a
DOE report cited in the January 2001 standards Final Rule.\13\ The
correct version of the formula should be RMCstandard ~ A *
RMCcloth + B. Today's final rule corrects this error and
clarifies that the RMCstandard values are linearly related
to the RMCcloth values through the coefficients A and B.
This correction and clarification apply to both appendix J1 and
appendix J2.
---------------------------------------------------------------------------
\13\ The January 2001 standards Final Rule cited a DOE report
titled, ``Development of a Standardized Energy Test Cloth for
Measuring Remaining Moisture Content in a Residential Clothes
Washer,'' published in May 2000. See 66 FR 3314, 3317.
---------------------------------------------------------------------------
In addition, DOE has observed that the description of the analysis
of variance test to be performed in section 2.6.6.2 is not explicit
about several key details of the analysis. Currently in appendix J1,
section 2.6.6.2 states, ``Perform an analysis of variance test using
two factors * * *''. Because an analysis of variance test can be
performed in multiple ways, clarification is needed to specify that an
analysis of variance ``with replication'' test should be performed.
Additionally, the current provisions state, ``The `P' value in the
variance analysis shall be greater than or equal to 0.1.'' Because
several different P-values can be determined, clarification is needed
to specify that the P-value in question is ``the `P' value of the F-
statistic for interaction between spin speed and lot in the variance
analysis.'' Finally, the current provisions of 2.6.6.2 state that ``
`P' is a theoretically based probability of interaction based on an
analysis of variance.'' This is technically incorrect; while ``P'' does
represent a measure of interaction between spin speed and lot, it does
not represent the probability of interaction between the two. DOE makes
these corrections and clarifications in today's final rule to both
appendix J1 and appendix J2. DOE notes that these corrections and
clarifications are for technical accuracy only, and they will not
change how these provisions of the test procedure are conducted.
Removal of Redundant Sections
The current test procedure contains redundant sections regarding
the test cloth specifications and preconditioning. DOE proposed in the
September 2010 NOPR to remove the redundant sections, currently
numbered 2.6.1.1-2.6.1.2.4. These sections were made obsolete by the
January 2001 standards Final Rule, which added sections 2.6.3 through
2.6.7.2 into appendix J1. However, DOE proposed to maintain the thread
count specification from deleted section 2.6.1.1(A), of 65 x 57 per
inch (warp x fill), by moving it to section 2.6.4.3.
AHAM and Whirlpool support deleting these obsolete sections and
maintaining the thread count specification of 65 x 57 per inch (warp x
fill) by moving it to section 2.6.4.3. (AHAM, No. 14, pp. 23-24; AHAM,
No. 24 at p. 5; Whirlpool, No. 27 at p.4) Therefore, for the reasons
stated in the September 2010 NOPR, DOE incorporates these changes into
both appendix J1 and the new appendix J2 test procedure in today's
final rule, as proposed in the September 2010 NOPR.
7. Testing Conditions
Water Supply Pressure
Section 2.4 of the current DOE clothes washer test procedure
provides the water pressure test conditions, as follows: ``The static
water pressure at the hot and cold water inlet connection of the
clothes washer shall be maintained at 35 pounds per square inch gauge
(psig) 2.5 psig (241.3 kPa 17.2 kPa) during
the test. The static water pressure for a single water inlet connection
shall be maintained at the 35 psig 2.5 psig (241.3 kPa
17.2 kPa) during the test. A water pressure gauge shall be
installed in both the hot and cold water lines to measure water
pressure.''
DOE notes that this description is ambiguous as to whether the
nominal 35 psig water pressure is to be set under static (non-flow)
conditions and allowed to drop during flow due to the head losses in
the line, or whether the 35 psig is to be maintained continuously under
all flow conditions during the test.
In the September 2010 NOPR, DOE discussed the test results from a
sample of front- and top-loading clothes washers that indicated that
water supply pressure can affect water consumption during a wash cycle,
and the effect of water supply pressure on total water use can vary
depending on the temperature settings selected. For tests at 10, 20,
and 35 psig water supply pressure under flow conditions, water
consumption varied by 10-30 percent among the different pressure
conditions for either hot wash/cold rinse or cold wash/cold rinse
cycles.
DOE noted that the test procedures for other residential appliances
specify the 35 psig requirement as being applicable under flow
conditions. For example, section 2.4 of the DOE test procedure for
dishwashers (10 CFR part 430 subpart B, appendix C) specifies to
``maintain the pressure of the water supply at 35 2.5
pounds per square inch gauge (psig) when the water is flowing.''
Dishwashers and clothes washers would likely have the same water supply
pressure when installed in a house, so
[[Page 13926]]
the test procedures for these products should include consistent water
supply pressure specifications. DOE noted, however, that the test data
suggested a water supply pressure of 20 psig under flow conditions for
the most consistent water use among different cycles for a given
clothes washer. DOE's analysis indicated that 20 psig may represent
typical static pressure under flow conditions that would result from 35
psig at non-flow conditions, and that these conditions may be more
representative of water supply conditions that would be found in
typical residential settings.
In the September 2010 NOPR, DOE did not propose to specify water
supply pressure more closely. DOE asked for stakeholders to provide any
relevant information about the conditions under which clothes washers
are currently tested, and invited comment on the appropriate
specification of the water supply pressure. DOE received the following
information and comments from interested parties regarding the water
supply pressure requirements in the existing clothes washer test
procedure.
ALS and AHAM support retaining the current specifications for
static water supply pressure. ALS and AHAM suggested that DOE specify a
``dynamic water pressure'' of 35 psi 2.5 psi. AHAM stated
that dynamic water pressure affects the test results, and ALS stated
that dynamic water pressure is the most important water supply
pressure. (ALS, No. 10 at p. 5; AHAM, No. 14 at p. 16).
Springboard stated that clothes washers with higher flow rates
could require extra-high water pressure to regulate the pressure to 35
psi during water fill. (Springboard, No. 11 at p. 3).
NEEA stated that water pressure should be specified under flow
conditions (not static pressure), and the value should be the same as
for the dishwasher test procedure (35 psi). NEEA presented data from
research conducted by the American Water Works Association (AWWA) that
indicates a range of average water system static pressures from 45 psi
to 80 psi, with occasional outliers. According to NEEA, discussions
with rural water systems contractors suggest normal system pressure
setpoints of 25 and 55 psi for pump on and pump off, respectively. NEEA
further stated that studies of municipal water system pressures tend to
find a static pressure range of 45 to 100 psi, depending on where in
the system one measures. NEEA stated that because municipal water
system pressures are designed to maintain pressure under high flow
rates at fire hydrants and standpipes, communities are unlikely to have
flowing pressure conditions less than 35 psi. Therefore, NEEA believes
that 35 psi is a reasonable estimate for most residential households.
(NEEA, No. 12 at pp. 14-15; NEEA, Public Meeting Transcript, No. 20 at
pp. 203-204) Whirlpool commented that it supports 35 psi
2.5 psi under ``dynamic flow conditions.'' (Whirlpool, No. 13 at p.
14).
The Joint Commenters commented that a static pressure under non-
flow conditions of 35 psi is significantly lower than actual system
operating pressures. They stated that a test rig calibrated to maintain
a static pressure of 35 psi will yield a flowing water pressure that is
significantly less than 35 psi. The Joint Commenters also noted that
the California-American Water Company reports one small sub-district
with an operating pressure of 40 psi, while all other service areas
have average operating pressures of 60 to 80 psi. They also observed
that the Philadelphia Water Department reported an average operating
pressure of 55 psi during fiscal year 2008. The Joint Commenters
believe that a water supply test pressure of 35 psi under flow
conditions would better represent typical water supply pressures found
in homes, and would align the clothes washer test procedure with the
dishwasher test procedure. The Joint Commenters further commented that
DOE's proposed definition of water pressure contains both ``static''
and ``flowing'' in the same sentence. NRDC suggested that the word
``static'' be removed from the definition to remove ambiguity and a
potentially significant source of unintended variation in test results.
(Joint Commenters, No. 16 at pp. 8-9; Joint Commenters, No. 23 at pp.
5-6).
The California Utilities recommend that DOE clarify whether the
water supply pressure specified in the proposed test procedure should
be maintained at flow or non-flow conditions. The California Utilities
also recommend that DOE specify that the water supply pressure be
maintained at 35 psig when the water is flowing, which will maintain
consistency with the dishwasher test procedure. The California
Utilities stated that this would be an appropriate water pressure for
much of the residential sector across the country. (California
Utilities, No. 18 at p. 5).
DOE notes that nearly all interested parties recommended specifying
a water pressure of 35 psi during water flow conditions. DOE further
notes that the clothes washer water consumption will be most heavily
affected by the water pressure during flow conditions rather than the
water pressure during non-flow conditions. Therefore, DOE agrees that
the water pressure specification should be specified during flow
conditions.
DOE recognizes that the term ``pressure'' must be further qualified
to remove ambiguity regarding the water supply conditions. In referring
to the pressure in fluid systems, ``static'' does not imply that the
fluid is stationary; rather, the term ``static'' represents the
pressure exerted in all directions by the fluid. Static pressure is the
type of pressure most commonly measured by typical instrumentation.
When the water is stationary, the static pressure is highest and
represents the total pressure in the system. As the water begins
flowing, some of the static pressure is converted to ``dynamic
pressure,'' which is the kinetic energy of the fluid per unit volume.
Thus, during flow conditions, the static pressure decreases at the same
time that dynamic pressure increases.
Because the intent of the test procedure is to specify the
typically measured pressure of the water during flow conditions, DOE
believes that the definition it proposed in the September 2010 NOPR
correctly specifies measuring the static water pressure while the water
is flowing. Removing the term ``static water pressure'' could create
ambiguity about which type of water pressure should be measured (i.e.,
static pressure, dynamic pressure, or total pressure). Similarly,
replacing the term ``static water pressure'' with ``dynamic water
pressure'' could result in an incorrect measurement being performed,
since ``dynamic water pressure'' has a different, specific meaning in
the context of fluid flow and is not equivalent to the pressure
typically measured during flow conditions. For these reasons, today's
final rule incorporates the change to the water pressure specification
in the new appendix J2 test procedure as proposed in the September 2010
NOPR.
Water Inlet and Drain Hoses
In response to the September 2010 NOPR, Whirlpool commented that
appendix J2 should adopt three additional test setup requirements that
can affect water and energy consumption. First, Whirlpool suggested
that the length of the inlet water hoses be defined as the standard
hose length of 48 inches, as this would avoid an inadvertent impact on
hot water usage. Second, Whirlpool suggested that the length of the
drain hose should be defined as not to exceed 72 inches. Third,
Whirlpool suggested
[[Page 13927]]
that the drain pipe height should be between 38 and 54 inches.
Whirlpool stated that adoption of these specifications will
significantly reduce variation between laboratories. (Whirlpool, No. 13
at p. 14).
DOE notes that Section 2.1 of the test procedure requires the
clothes washer to be installed in accordance with manufacturer's
instructions, which would include installation of the water inlet and
drain hoses supplied with each new clothes washer. Therefore, DOE
believes the test procedure should not separately specify the length of
the inlet and drain hoses. Regarding the height of the drain pipe, DOE
has no data with which to evaluate Whirlpool's suggested height
requirement. Therefore, DOE is unable to determine the impact on test
results due to the height of the drain pipe. For these reasons, today's
final rule does not adopt Whirlpool's suggested requirements regarding
water inlet and drain hoses.
8. Clarifications and Corrections
Correction of Cold Rinse Definition
After the publication of the September 2010 NOPR, DOE became aware
of an error in the definition of ``cold rinse'' in the test procedure
at appendix J1. Specifically, cold rinse is defined in section 1.22 of
appendix J1 as ``the coldest rinse temperature available on the machine
(and should be the same rinse temperature selection tested in 3.7 of
this appendix).'' However, section 3.7 of appendix J1 contains
provisions for testing warm rinse, which instruct that such tests be
conducted with the hottest rinse temperature available. Thus, section
3.7 is inapplicable to the definition of cold rinse in section 1.22. In
the August 2011 SNOPR, DOE proposed to remove reference to section 3.7
in the definition of cold rinse in both section 1.22 of appendix J1 and
proposed section 1.7 of appendix J2.
Whirlpool and AHAM agree with DOE's proposal to correct the
definition of cold rinse. (Whirlpool, No. 27 at p. 4; AHAM, No. 24 at
p. 3) DOE received no comments on these revisions. Therefore, for the
reasons stated above and in the August 2011 SNOPR, DOE incorporates
these changes into the amendments to the appendix J1 test procedure and
the new appendix J2 test procedure in today's final rule as proposed in
the August 2011 SNOPR.
Clarification of Wash Time Setting for Electromechanical Dials
Section 2.10 of the current test procedure specifies the wash time
setting to be used in the energy test cycle. If only one wash time is
prescribed in the energy test cycle, that wash setting is to be used;
otherwise, the wash time setting is required to be the higher of either
the minimum wash time or 70 percent of the maximum wash time available
in the energy test cycle. As described in the August 2011 SNOPR, DOE
has become aware that, for certain clothes washers equipped with an
electromechanical dial to control wash time, the dial may yield
different results for the same setting depending on the direction in
which the dial was turned to reach that setting. DOE's internal testing
indicates that that consistency in setting the wash time in such cases
may be achieved by resetting the dial to the minimum wash time and then
turning it in the direction of increasing wash time to reach the
desired setting. If the desired setting is passed, the dial should not
be turned in the direction of decreasing wash time to reach the
setting. Instead, the dial should be returned to the minimum wash time
and then turned in the direction of increasing wash time until the
desired setting is reached. In the August 2011 SNOPR, DOE proposed to
add these clarifications to the provisions for setting the wash time in
both appendix J1 and appendix J2.
To provide further consistency, DOE also proposed the additional
clarification that the conditions stated in the case of more than one
wash time setting--that the wash time setting shall be the higher of
either the minimum, or 70 percent of the maximum wash time available in
the energy test cycle--shall apply regardless of the labeling of
suggested dial locations.
Springboard stated that use and care manuals sometimes do not
prescribe a wash time for each cycle. Springboard also commented that
currently the appendix J1 test procedure does not specify whether the
70 percent wash time provision applies to machines with
electromechanical or electronic controls. Springboard questioned
whether a default setting on the machine should be used, or whether the
cycle and time labeled in bold on the control panel should be the
prescribed setting. Springboard further noted that on a mechanical
dial, it is not always possible to achieve the same wash time setting.
(Springboard, No. 11 at p. 3).
AHAM does not oppose DOE's proposed clarifications to appendices J1
and J2 regarding the wash time setting. (AHAM, No. 24 at p. 4) ALS
supports DOE's proposal to achieve consistency in obtaining the wash
time setting on machines with electromechanical dials. ALS stated that
the proposed changes would reduce variability in test results.
Furthermore, ALS supports the proposal to add the phrase ``regardless
of the labeling of suggested dial locations'' to clarify the existing
requirement that ``the wash time setting shall be the higher of either
the minimum or 70 percent of the maximum wash time available in the
energy test cycle.'' (ALS, No. 22 at p. 3).
DOE has observed that clothes washers with electronic controls have
a default wash time setting for each cycle; this default time would be
considered the ``prescribed'' wash time setting. Therefore, the
provision stating ``the wash time setting shall be the higher of either
the minimum or 70 percent of the maximum wash time available in the
energy test cycle'' applies only to electromechanical controls, where
the user is required to manually set the wash time by turning the wash
setting dial. DOE's proposal would clarify that this wash time
requirement would apply ``regardless of the labeling of suggested dial
locations.'' This would include any labels in bold or other markings
suggesting particular locations on the dial.
DOE received no comments objecting to its proposed revisions
regarding the wash time setting provisions of the test procedure.
Therefore, for the reasons discussed above, DOE incorporates these
changes into the amendments to the appendix J1 test procedure and the
new J2 test procedure in today's final rule.
Clarification of Cold Wash Definition
As described in the August 2011 SNOPR, DOE has observed multiple
clothes washer models that offer a ``tap cold'' wash temperature
setting in addition to a ``cold'' wash temperature setting. DOE
proposed to clarify how to classify these temperature selections in
appendix J1 and appendix J2.
Section 3.6 of appendix J1 defines the cold wash selection as ``the
coldest wash temperature selection available.'' Additionally, section
1.18 of appendix J1 defines ``warm wash'' as ``all wash temperature
selections below the hottest hot, less than 135[emsp14][deg]F, and
above the coldest cold temperature selection.'' In some cases with
these models, DOE has observed that the ``cold'' setting mixes in hot
water to raise the temperature above the cold water supply temperature,
as defined in section 2.3 of appendix J1. In such cases, DOE proposes
that the manufacturer specified ``cold'' setting should be considered a
warm wash, as defined in section 1.18 of appendix J1 and section 1.34
of appendix J2; and that the ``tap cold'' setting should be considered
the cold wash, as defined in section 3.6 of
[[Page 13928]]
both appendix J1 and appendix J2. In cases where the ``cold'' setting
does not add any hot water for any of the test loads required for the
energy test cycle, the ``cold'' setting should be considered the cold
wash; and the ``tap cold'' setting would not be required for testing.
AHAM, Whirlpool, and NEEA support the proposed clarification
regarding cold wash temperature selection (AHAM, No. 24 at p. 4;
Whirlpool, No. 27 at p. 3; NEEA, No. 26 at p. 7). DOE received no
comments objecting to its proposed revisions regarding the
clarification of the cold wash temperature. Therefore, for the reasons
discussed above, DOE incorporates these changes into the amendments to
the appendix J1 test procedure and the new J2 test procedure in today's
final rule.
Removal of Obsolete Note in Water Factor Calculation Section
In the current test procedure at appendix J1, section 4.2 provides
instructions for calculating the water consumption of clothes washers.
Currently, this section includes the following note:
(The calculations in this Section need not be performed to determine
compliance with the energy conservation standards for clothes
washers).
EPCA established a water factor standard for top-loading and front-
loading standard-size residential clothes washers, so this note is now
obsolete. The calculations in section 4.2 must be performed to
determine compliance with energy conservation standards for these
product classes. Today's final rule removes this note in both appendix
J1 and appendix J2.
Correction of Typographical Error in Hot Water Consumption Calculation
Section 4.1.4 of the existing clothes washer test procedure
calculates the total per-cycle hot water energy consumption using gas-
heated or oil-heated water. The equation listed in this section
contains a clerical error in the symbol for total weighted per-cycle
hot water energy consumption. In the September 2010 NOPR, DOE proposed
amending the equation in this section to replace the incorrect symbol,
HT, with the correct symbol, HET. DOE would apply
this amendment to both existing appendix J1 and new appendix J2.
AHAM supports DOE's proposed correction to the symbol for total
weighted per-cycle hot water energy consumption. (AHAM, No. 14 at p.
16) DOE received no comments objecting to this revision. Therefore, for
the reasons stated above, DOE incorporates these changes into the
amendments to the appendix J1 test procedure and the new J2 test
procedure.
Removal of Energy Factor Calculation
Section 4.5 of the current clothes washer test procedure provides
for the calculation of Energy Factor (EF). EF was the energy efficiency
metric used to establish energy conservation standards for clothes
washers manufactured before January 1, 2004. (10 CFR 430.32(g)) This
metric is no longer used to determine compliance with energy
conservation standards, or in any other related metrics. Therefore, DOE
proposed in the September 2010 NOPR to remove the obsolete calculation
of EF from the clothes washer test procedure.
AHAM supports DOE's proposal to remove the obsolete calculation of
EF from the clothes washer test procedure. (AHAM, No. 14 at p. 17) DOE
received no comments objecting to this revision. Therefore, for the
reasons stated above, DOE incorporates this change into the amendments
to the appendix J1 test procedure and the new appendix J2 test
procedure.
Clarification of Waiver Field Test Equation
In response to the August 2011 SNOPR, AHAM commented that section
6.2 of the test procedure regarding field testing needs clarification.
AHAM stated further that the equation in section 6.2 is confusing.
(AHAM, No. 24 at p. 6)
Section 6.2 in the appendix J1 test procedure provides describes
one possible method for determining the energy consumption of a clothes
washer with a nonconventional wash system. Generally, the method
described in this section involves field testing both the
nonconventional clothes washer as well as a conventional clothes
washer; developing a scaling factor by comparing the conventional
clothes washer's rated energy consumption and field test energy
consumption; and applying this scaling factor to the nonconventional
clothes washer to determine an appropriate rating based on its field
test results.
The equation provided in Section 6.2 was created when EF was the
only metric used to determine compliance with energy conservation
standards for clothes washers. Therefore, it does not include
provisions for measuring the energy required for moisture removal
(i.e., drying energy), which is a component of MEF, or for measuring
the water consumption factor. Therefore, this equation is no longer
applicable and should be removed. Today's final rule amends Section 6.2
in both appendix J1 and the newly created appendix J2 by removing the
specific example, including the equation, and modifying the general
provisions so that the section is applicable to MEF and WF. The
amendment to appendix J2 contains an additional instruction to measure
standby and off mode power according to the provisions in the relevant
sections of the test procedure.
Clarification of Water Factor Terminology
DOE notes the use of inconsistent terminology to describe the water
consumption factor (or water factor) among the clothes washer test
procedure, clothes washer energy conservation standards, annual
operating cost calculations, and certification, compliance, and
enforcement requirements for clothes washers.
The clothes washer energy conservation standards use the
terminology ``water factor,'' and DOE has observed that the term
``water factor'' has been used more often than ``water consumption
factor'' during previous rulemakings and within public comments
submitted by interested parties. DOE has also observed that ``water
factor'' is the term most commonly used within the clothes washer
industry. Therefore, today's final rule replaces the term ``water
consumption factor'' with ``water factor'' in the appendix J1 test
procedure, the newly created appendix J2 test procedure, and the annual
operating cost calculations for clothes washers in 10 CFR 430.23(j). In
addition, today's final rule replaces the abbreviation ``WCF'' with
``WF'' in the appendix J1 test procedure and the newly created appendix
J2 test procedure.
9. Test Procedure Performance Specifications
In response to the August 2009 standards framework document, DOE
received multiple comments in support of adding performance measures to
the clothes washer test procedure, which it addressed in the September
2010 NOPR. DOE carefully considered these comments but did not propose
to incorporate measures of wash performance into the clothes washer
test procedure. DOE noted that EPCA states ``[a]ny test procedures
prescribed or amended under this section shall be reasonably designed
to produce test results which measure energy efficiency, energy use * *
* or estimated annual operating cost of a covered product during a
representative average use cycle or period of use * * *
[[Page 13929]]
and shall not be unduly burdensome to conduct.'' 42 U.S.C. 6293(b)(3).
DOE stated, however, that it would consider wash performance and
related impacts to consumer utility in developing any future energy
conservation standards for residential clothes washers.
In response to the September 2010 NOPR, DOE received multiple
comments regarding the inclusion of performance measures in the clothes
washer test procedure. AHAM and NEEA support DOE's proposal to not
incorporate wash performance into the test procedure. AHAM stated that
DOE should consider it later should data on the feasibility of
incorporating a measure of wash performance become available. NEEA
commented that there is no justification for including such metrics in
a test procedure, which is required by EPCA to measure energy and water
use and to provide a means to estimate annual operating cost. (AHAM,
No. 14 at p. 17; NEEA, No. 12 at p. 15) ALS stated that generally, the
residential clothes washer test procedure is adequate for measuring
energy consumption and water consumption of both residential and
commercial clothes washers, as long as the minimum efficiency standard
for commercial clothes washers takes into account the consumer utility
needed for the commercial washer application. (ALS, No. 10 at p. 6).
BSH commented that wash performance should be included, and that
the clothes washer should be rated based on the quantity of laundry can
successfully be washed rather than the physical size of the clothes
container. (BSH, No. 17 at p. 4; BSH, Public Meeting Transcript, No. 20
at p. 211) BSH stated that manufacturer-rated load weight accompanied
by performance assessments are the only way to fairly compare top-load
and front-load clothes washer capabilities. (BSH, No. 17 at p. 4).
China commented that the testing conditions proposed by DOE for
various temperature settings are different than the test conditions
required by IEC Standard 60456, ``Clothes washing machines for
household use-Methods for measuring the performance,'' Edition 5.0.
China recommended that DOE apply the same test conditions as IEC
Standard 60456, or specify testing temperatures by referencing IEC
Standard 60456 test conditions, to avoid creating unnecessary barriers
to trade. China stated that IEC Standard 60456 test conditions
establish a clear value for the supply water temperatures, compared to
the range of water temperatures provided in DOE's proposed rule, and
that this could lead to confusion. (China, No. 19 at p.4).
In response, DOE reiterates that it currently considers any
lessening of the utility or the performance of a covered product likely
to result from the imposition of any energy conservation standard. 42
U.S.C. 6295(o)(2)(B)(i)(IV) Furthermore, DOE may not prescribe a
standard that is likely to result in the unavailability in the United
States of performance characteristics, including reliability. 42 U.S.C.
6295(o)(4) As stated above, EPCA requires that DOE test procedures must
be reasonably designed to produce test results that measure energy
efficiency, energy use, water use in specified instances, or estimated
annual operating cost of a covered product during a representative use
cycle or period of use. 42 U.S.C. 6293(b)(3).
D. Annual Operating Cost Calculation
DOE did not propose in the September 2010 NOPR to amend the
estimated annual operating cost calculation in 10 CFR 430.23 to include
the cost of energy consumed in the non-active washing modes. DOE noted
that the cost of energy consumed in self-clean, standby, off, delay
start, and cycle finished modes is small relative to the total annual
energy cost for clothes washers and, therefore, would make little
difference in the estimated annual operating cost calculation. In
addition, the Federal Trade Commission's (FTC's) EnergyGuide Label for
clothes washers includes as its primary indicator of product energy
efficiency the estimated annual operating cost, compared to a range of
annual operating costs of similar products. Appendix F1 to 16 CFR part
305. An estimated annual operating cost incorporating self-clean,
standby, off, delay start, and cycle finished mode energy use would no
longer be directly comparable to the minimum and maximum energy costs
currently prescribed for the EnergyGuide Label.
Upon further consideration, DOE proposed in the August 2011 SNOPR
to amend the annual energy cost calculations to include the cost of
energy consumed in non-active washing modes. As discussed in the August
2011 SNOPR, EPCA requires that 180 days after the amended test
procedure is prescribed, all representations related to the energy use,
efficiency, or cost of energy consumed for residential clothes washers
must reflect the results of testing according to the amended test
procedure. 42 U.S.C. 6293(c)(2) Also, the definition of ``estimated
annual operating cost'' is the aggregate retail cost of the energy
likely to be consumed annually in representative use of a consumer
product, determined in accordance with section 6293 of this title. 42
U.S.C. 6291(7) The test procedure established in today's final rule
includes provisions for measuring standby and off mode energy use.
Additionally, EPCA requires that any revisions to the labels for
residential clothes washers include disclosure of the estimated annual
operation cost (determined in accordance with DOE's test procedures
prescribed under section 6293 of EPCA), unless the Secretary determines
that disclosure of annual operating cost is not technologically
feasible, or if the FTC determines that such disclosure is not likely
to assist consumers in making purchasing decisions or is not
economically feasible. 42 U.S.C. 6294(c)(1).
DOE received additional comments from interested parties in
response to its proposal in the August 2011 SNOPR. AHAM opposes
revision of estimated annual operating cost to incorporate standby, off
and self-clean modes. AHAM stated that the cost of energy associated
with each individual mode makes little difference in the annual
operating cost. AHAM claims the increased test burden in measuring
these modes and incorporating them in the annual energy cost is not
justifiable. AHAM further stated that if, however, DOE revises the
estimated annual operating cost calculation, DOE and FTC should provide
adequate time for collection of data on operating costs before the new
integrated approach goes into effect. (AHAM, No. 24 at p. 3) NEEA
agrees with DOE's proposal to include non-active washing mode energy
use in the calculation of energy cost. (NEEA, No. 26 at p. 7).
DOE notes that the revised test procedure at appendix J2 implements
the ``alternate approach'' for measuring standby and off mode energy
use, which minimizes the additional test burden required for performing
these measurements. In addition, the revised test procedure does not
require measurement of self-clean mode.
For the reasons stated in the August 2011 SNOPR, DOE amends the
annual energy cost calculations in 10 CFR part 430.23 for residential
clothes washers to include the cost of energy consumed in standby and
off modes. Therefore, today's final rule amends the clothes washer test
procedure to revise the estimated annual operating cost calculation to
integrate standby and off mode energy use, as proposed in the August
2011 SNOPR.
[[Page 13930]]
E. Revisions to Appendix J1
The following sections describe amendments to the current appendix
J1 in today's final rule. These changes are discussed in more detail
previously but are set forth here to clearly describe those changes
that are applicable to appendix J1, use of which is currently required
to demonstrate compliance with existing energy conservation standards.
In any rulemaking to amend a test procedure, DOE must determine to what
extent, if any, the proposed test procedure would alter the measured
energy efficiency of any covered product as determined under the
existing test procedure. 42 U.S.C. 6293(e)(1) If DOE determines that
the amended test procedure would alter the measured efficiency of a
covered product, DOE must amend the applicable energy conservation
standard accordingly. 42 U.S.C. 6293(e)(2) DOE has determined that none
of the following amendments to appendix J1 would alter the measured
efficiency of residential clothes washers. The amendments to appendix
J1 are effective 30 days after publication of this final rule in the
Federal Register.
1. Revision of Introductory Text
Today's final rule revises the introductory text of appendix J1
after the appendix heading to note that manufacturers may continue to
use appendix J1 until the compliance date of any amended standards that
address standby and off mode energy consumption for residential clothes
washers. After this date, all residential clothes washers shall be
tested using the provisions of appendix J2. This introductory note is
also included at the beginning of appendix J2.
2. Correction of Typographical Errors in Materials Incorporated by
Reference
The current DOE test procedure at appendix J1 contains an incorrect
mailing address in section 2.6.4.5.3(b) for the American Association of
Textile Chemists and Colorists. The correct address is P.O. Box 12215.
Today's final rule corrects this typographical error. Today's final
rule also updates the contact telephone number to (919) 549-3526, which
is listed on the cover page of the current versions of the AATCC
standards.
3. Correction of Cold Rinse Definition
As discussed previously in section III.C.8.a, today's final rule
corrects the definition of cold rinse in section 1.22 of appendix J1 by
removing the incorrect reference to section 3.7.
4. Removal of Redundant Sections
As discussed previously in section III.C.6.k, this final rule
removes the redundant sections 2.6.1.1-2.6.1.2.4 in appendix J1, which
were made obsolete by the 2001 Final Rule. Today's final rule also
maintains the thread count specification from deleted section
2.6.1.1(A), of 65 x 57 per inch (warp x fill) by moving it to section
2.6.4.3.
5. Detergent Specification and Dosage
As discussed previously in section III.C.6.c, this final rule
specifies the use of AHAM standard test detergent Formula 3 in test
cloth preconditioning, at a dosing of 27.0g + 4.0g/lb.
6. Wash Time Setting for Electromechanical Dials
As discussed previously in section III.C.8.b, this final rule adds
clarification to the wash time setting provisions in section 2.10 of
appendix J1 to help ensure consistency when setting the wash time on
clothes washers with electromechanical dials.
7. Clarification of Cold Wash Definition
As discussed previously in section III.C.8.c, this final rule adds
clarification to the cold wash definition in section 3.6 of appendix J1
for clothes washers that offer a ``tap cold'' wash temperature setting
in addition to a ``cold'' wash temperature setting.
8. Removal of Obsolete Note in Water Factor Calculation Section
As discussed previously in section III.C.8.d, this final rule
removes an obsolete note in section 4.2 of appendix J1, which states
that the water factor calculations need not be performed to determine
compliance with the energy conservation standards for clothes washers.
9. Clarification of Water Factor Terminology
As discussed previously in section III.C.8.h, this final rule
replaces the term ``water consumption factor'' with ``water factor'' in
sections 1.19 and 4.2.3 of appendix J1.
10. Correction of Typographical Error in Hot Water Consumption
Calculation
As discussed previously in section III.C.8.e, this final rule
amends the equation in section 4.1.4 of appendix J1 to replace the
incorrect symbol, HT, with the correct symbol,
HET.
11. Extension of Test Load Size Table
As discussed previously in section III.C.3.b, this final rule
extends Table 5.1 in appendix J1 to accommodate clothes washers with
capacities up to 6.0 cubic feet.
12. Clarification of Waiver Field Test Equation
As discussed previously in section III.C.8.g, this final rule
modifies the provisions in section 6.2 in appendix J1 by removing the
specific example, including the equation, and modifying the general
provisions so that the section is applicable to MEF and WF.
13. Corrections to Provisions for Calculating the RMC Correction Curve
As discussed previously in section III.C.6.j, this final rule
corrects typographical and transcription errors in the formula given in
section 2.6.6.1 of appendix J1. This final rule also amends the
description of the analysis of variance test to be performed in section
2.6.6.2 to make the analysis details more explicit and technically
accurate.
F. Removal of Obsolete Test Procedure at Appendix J
In the September 2010 NOPR, DOE proposed to delete appendix J to
subpart B of 10 CFR part 430 along with all references to appendix J in
10 CFR 430.23. Appendix J applies only to clothes washers manufactured
before January 1, 2004 and is therefore obsolete. Appendix J1 to
subpart B of 10 CFR part 430 provides an applicable test procedure for
all clothes washers currently available on the market. DOE proposed to
maintain the current naming of appendix J1, rather than renaming it as
appendix J, and to establish new appendix J2 to simplify the changes
required.
NEEA supports DOE's proposal to eliminate appendix J and to add
appendix J2. (NEEA, No. 12 at p. 16) Therefore, for the reasons
discussed above, DOE eliminates appendix J along with all references to
appendix J.
G. Compliance With Other EPCA Requirements
1. Test Burden
As noted previously, under 42 U.S.C. 6293(b)(3), EPCA requires that
``[a]ny test procedures prescribed or amended under this section shall
be reasonably designed to produce test results which measure energy
efficiency, energy use * * * or estimated annual operating cost of a
covered product during a representative average use cycle or period of
use * * * and shall not be unduly burdensome to conduct.'' DOE
tentatively concluded in the September 2010 NOPR that amending the
relevant DOE test procedures to incorporate clauses regarding test
conditions and
[[Page 13931]]
methods found in IEC Standard 62301, along with the proposed
modifications to the active washing mode test procedure, would satisfy
this requirement.
DOE received numerous comments regarding test burden in response to
the September 2010 NOPR. DOE addressed some of these comments
specifically related to delay start mode and cycle finished mode test
burden in the August 2011 SNOPR. DOE responds to the remaining comments
here.
Whirlpool stated that the proposed measurement of energy and water
consumption in delay start, cycle finished, self-clean, off modes,
additional rinses, etc. would increase manufacturer test burden by as
much as 25 percent. Whirlpool commented that it does not have
sufficient ``slack'' capacity to manage such an increase in test burden
because its laboratories are currently operating at full capacity on
two shifts. Whirlpool stated that the cost of utilizing third-party
laboratories for this added testing would be substantial and could
exceed $500,000 annually. Whirlpool added that the proposed revision of
the energy test cycle definition could double or quadruple the length
of the test process for any clothes washer for which Part (B) of the
proposed energy test cycle definition applies. Whirlpool believes that
this additional test burden would not be justifiable. (Whirlpool, No.
13 at pp. 1, 13).
AHAM commented that additional measurements required by the
proposed rule would be burdensome and would result in only a de minimus
amount of additional measured energy (as little as zero additional
energy in the case of cycle finished mode). AHAM stated that DOE should
not substantially increase the testing burden on manufacturers when the
result would not produce significant conservation of energy and thus
little or no benefit to the public interest. (AHAM, No. 14 at p. 2)
AHAM stated that measuring de minimus amount of standby power energy
would require large amounts of testing time. AHAM believes that DOE's
estimate of an 11 percent increase in the testing duration for clothes
washers offering inactive, off, delay start, and cycle finished modes
would be significant, and AHAM predicts that the increase in test
duration could actually be as much as 25 percent. AHAM believes that
separately measuring delay start and cycle finished mode represents a
significant increase in the testing burden, without any corresponding
public benefit. (AHAM, No. 14 at pp. 4, 15) Furthermore, AHAM stated
that adding steam cycles to the test procedure would add substantially
to the test burden. (AHAM, No. 14 at p. 10).
BSH commented that its calculations indicate appendix J1 requires
three days of dedicated testing for each appliance. BSH believes this
is already a significant burden for appliance testing, particularly as
compared to clothes dryers and other appliances. BSH estimated that the
worst-case proposal in the September 2010 NOPR would represent a 47
percent increase in testing time for each clothes washer, for a total
testing time of one full work week. BSH stated that to perform this
additional testing, laboratory facilities and available labor would
need to be increased by around 50 percent, or external resources
sought, which would delay product innovation. BSH also estimated that
should self-cleaning and steam cycles be excluded from testing, and
should delay start and cycle finished modes be included in off and
inactive modes rather than separately measured, the increase in test
burden would be approximately 15 percent. BSH believes that this level
of testing increase is manageable. Finally, BSH estimated that should
the definition of energy test cycle be implemented as proposed in the
September 2010 NOPR, test burden could increase by 100 percent or more
depending on how the phrase ``largely comparable'' is interpreted and
defined. (BSH, No. 17 pp. 5-6).
NEEA believes that any increased test burden resulting from DOE's
proposal will be minor in comparison to the significant amount of
testing that manufacturers conduct as part of product development, and
in testing their competitors' products. NEEA stated that much of the
added test burden, such as burden associated with testing inactive
mode, non-active wash mode power consumption, and steam cycles will be
associated with only a subset of the models produced. (NEEA, No. 12 at
p. 15).
The California Utilities commented that the test procedure proposed
by DOE in the September 2010 NOPR represents an improvement over the
current J1 test procedure, and does not appear to significantly add to
the testing burden. The California Utilities stated that testing of
delay start, cycle finished, and self-clean modes should apply only to
those models that include those features (or in the case of self-clean
mode, those models with a manufacturer recommendation for periodic
self-clean cycles), and therefore would alter the testing burden only
for those products. The California Utilities also stated that because
measurement of hot water is already incorporated in the test procedure
for the MEF calculation, inclusion of hot water in the proposed IWF
calculation will not introduce any significant test burden. (California
Utilities, No. 18 at pp. 1, 2, 5).
In the August 2011 SNOPR, DOE proposed supplemental amendments to
the clothes washer test procedure, which incorporated the most current
version of IEC Standard 62301 (Second Edition) instead of the previous
version. DOE also proposed certain amendments to the active mode
provisions of the test procedure. As explained in the August 2011
SNOPR, DOE tentatively concluded that the new provisions in IEC
Standard 62301 (Second Edition) would improve test results without
undue test burden. DOE also stated its belief that the potential for
increased test burden for certain power measurements is offset by more
reasonable requirements for testing equipment, while maintaining
acceptable measurement accuracy. In addition, the proposed amendments
to the active mode provisions consist of clarifications and would not
require any additional investment, equipment purchases, or test time
beyond those described in the September 2010 NOPR. Therefore, DOE
tentatively concluded that the proposed active mode amendments would
not impose significant burden on manufacturers.
The California Utilities support the harmonization of the test
procedure with IEC Standard 62301 (Second Edition). The California
Utilities stated that the potential test burden on manufacturers is
outweighed by the improvement in accuracy and representativeness of the
resulting power measurement. The California Utilities stated further
that the increased testing time and the use of analytical software
associated with using the Second Edition is required only for unstable
and non-cyclical power measurements, and because the expected number of
instances of unstable and non-cyclical power should be small, the added
test burden should likewise remain minimal. (California Utilities, No.
25 at p. 1).
NEEA believes that the extra time required for measuring unstable
power modes is justified for obtaining an accurate measurement. NEEA
believes that for clothes washers requiring the most extreme increase
in test burden, manufacturers will quickly learn the behavior of their
products' standby and off mode behavior and choose the appropriate
measurement technique accordingly. (NEEA, No. 26 at p. 2) NEEA also
suggested that setting time limits on the duration of delay start and
[[Page 13932]]
cycle finished mode can limit the test burden associated with measuring
power in these modes. (NEEA, No. 26 at pp. 2-3) NEEA disagrees with
Whirlpool's claim that there is virtually no consumer benefit in
measuring power consumption in low-power modes. (NEEA, No. 26 at p. 3).
DOE notes that interested parties generally support harmonizing the
test procedure with the Second Edition of IEC Standard 62301, and that
the test procedure improves accuracy and consistency of test results
and is not unduly burdensome to conduct. As described previously, DOE
adopts the ``alternate approach'' in which all low-power mode hours are
allocated to the inactive and off modes, and the low-power mode power
is only measured in the inactive and off modes, depending on which of
these modes is present. Under the alternate approach, additional
measurements of delay start mode and cycle finished mode are not
required. Today's final rule also does not require the separate
measurement of self-clean mode. In addition, the large majority of
amendments to the active mode provisions of the test procedure consist
of clarifications to test conduct and revised calculations, and would
not require any additional investment, equipment purchases, or test
time beyond those described in the September 2010 NOPR. DOE believes
that any additional test burden resulting from the revised definition
of the energy test cycle will be minimal because manufacturers already
possess in-depth knowledge about the energy characteristics of each
wash cycle offered on their clothes washers. Other test laboratories
would not be required to conduct multiple tests to determine which
cycle settings should be included under Part (B) of the energy test
cycle, which could actually reduce test burden. For these reasons, DOE
concludes that today's amendments to the provisions for standby mode,
off mode, and active mode provisions of the clothes washer test
procedure will not impose significant additional test burden on
manufacturers.
2. Integration of Standby Mode and Off Mode Energy Consumption Into the
Energy Efficiency Metrics
As discussed previously, EPCA requires that standby mode and off
mode energy consumption be integrated into the overall energy
efficiency, energy consumption, or other energy descriptor for each
covered product unless the current test procedures already fully
account for the standby mode and off mode energy consumption or if an
integrated test procedure is technically infeasible. 42 U.S.C.
6295(gg)(2)(A) As described in section III.B.8, DOE adds provisions in
this final rule for calculating the integrated modified energy factor,
which integrates the combined low-power mode energy consumption into
the overall energy efficiency metric for clothes washers.
EPCA also provides that test procedure amendments adopted to comply
with the new EPCA requirements for standby and off mode energy
consumption will not be used to determine compliance with previously
established standards. 42 U.S.C. 6295(gg)(2)(C) Because DOE is
incorporating these changes in a new appendix J2 to 10 CFR part 430
subpart B that manufacturers would not be required to use until the
compliance date of amended energy conservation standards for
residential clothes washers, the test procedure amendments pertaining
to standby mode and off mode energy consumption that DOE adopts in this
rulemaking do not apply to, and have no effect on, existing standards.
3. Impacts on Commercial Clothes Washers
The test procedure for commercial clothes washers is required to be
the same test procedure established for residential clothes washers. 42
U.S.C. 6314(a)(8) Thus, the test procedure set forth in appendix J1 of
subpart B of 10 CFR part 430 is also currently used to test commercial
clothes washers. 10 CFR 431.154
DOE noted in the September 2010 NOPR that the impacts on testing
commercial clothes washers would be limited to the proposed amendments
associated with active washing mode because commercial clothes washer
standards are based on MEF and WF. These include the proposed changes
to the test load size specification, TUFs, DUF, test cloth
specification, capacity measurement, detergent specification, and water
supply pressure specification, which would affect the measured energy
and water efficiencies of a commercial clothes washer. DOE stated that
the most significant impacts would be associated with the proposed
amendments for capacity measurement and usage factors, but did not have
information to evaluate any impacts for commercial clothes washers.
DOE received several comments on the potential impacts of an
amended clothes washer test procedure on commercial clothes washers and
provided responses to most of these comments in the August 2011 SNOPR.
NEEA provided one additional comment on the September 2010 NOPR. NEEA
stated that most of the provisions of the new appendix J2 test
procedure will be relevant to the testing and rating of commercial
clothes washers. NEEA notes, however, that DOE's current projected
schedule for a new commercial clothes washer rulemaking estimates a
final rule in 2015, which would result in an effective date of new
standards for these products in 2018. NEEA suggests that DOE explore
the possibility of expediting the projected rulemaking schedule for
commercial clothes washers to more closely align the metrics and
marketplace performance perceptions of the residential and commercial
products. (NEEA, No. 12 at p. 15).
DOE also received the following comments from the August 2011
SNOPR. AHAM and ALS agree with DOE's clarification that the impact on
commercial clothes washers would be limited to the proposed amendments
associated with active washing mode, since commercial clothes washer
standards are based on MEF and WF, which do not include standby and off
mode. (AHAM, No. 24 at p. 6; ALS, No. 22 at p. 4).
For the reasons discussed above and in the August 2011 SNOPR, DOE
concludes that the addition of procedures to measure the energy use in
standby and off modes would be inapplicable to and would not affect the
standards for commercial clothes washers pursuant to 42 U.S.C. 6293(e).
For the active mode provisions of the revised test procedure that could
affect the measured energy and water efficiencies of a commercial
clothes washer, DOE notes that 42 U.S.C. 6293(e)(3) provides the
following: Models of covered products in use before the date on which
an amended energy conservation standard (developed using the amended
test procedure pursuant to 42 U.S.C. 6293(e)(2)) becomes effective that
comply with the energy conservation standard applicable to such covered
products on the day before such date are deemed to comply with the
amended standard. The same is true of revisions of such models that
come into use after such date and have the same energy efficiency,
energy use or water use characteristics.
4. Certification, Compliance, and Enforcement Requirements
Sections 6299-6305 and 6316 of EPCA authorize DOE to enforce
compliance with the energy and water conservation standards established
for certain consumer products and commercial equipment. 42 U.S.C. 6299-
6305 (consumer products), 6316
[[Page 13933]]
(commercial equipment) On March 7, 2011, the Department revised,
consolidated, and streamlined its existing certification, compliance,
and enforcement regulations for certain consumer products and
commercial and industrial equipment covered under EPCA, including
residential clothes washers. 76 FR 12422. These regulations for
residential clothes washers are codified in 10 CFR 429.20.
The certification requirements for residential clothes washers
consist of a sampling plan for selection of units for testing and
requirements for certification reports. In the August 2011 SNOPR, DOE
proposed amending the provisions in the sampling plan in 10 CFR part
429.20(a)(2) that would include IMEF along with the existing measure of
MEF, and IWF along with the existing measure of WF.
AHAM and ALS expressed support for DOE's proposal to include IMEF
and IWF along with the existing measures of MEF and WF, respectively in
the sampling plan in 10 CFR 429.20(a)(2). AHAM also supported DOE's
proposal to not make any changes to the reporting requirements for
residential clothes washers. (AHAM, No. 24 at p. 6; ALS, No. 22 at p.
4)
In the November 2011 SNOPR, DOE proposed amending the reporting
requirements in 10 CFR 429.20(b)(2) to require manufacturers, when
using appendix J2, to list all cycle settings comprising the complete
energy test cycle for each basic model. As described previously in
section III.C.4.f, DOE does not intend to make this information
publicly available as part of the certification report.
Today's final rule modifies the reporting requirements in 10 CFR
429.20(b)(2) by specifying that a certification report shall include
publicly available information including MEF, WF, and capacity; as well
as the list of cycle settings comprising the complete energy test cycle
for each basic model, which would not be made publicly available as
part of the report. The requirement to provide the list of cycle
settings comprising the complete energy test cycle will apply only to
test results obtained using appendix J2.
H. Impacts of the Test Procedure Amendments on EnergyGuide and
ENERGYSTAR
In the September 2010 NOPR, DOE determined that the proposed test
procedure amendments would not affect the FTC EnergyGuide labeling
program because DOE did not propose to amend the estimated annual
operating cost calculation in 10 CFR 430.23. DOE received multiple
comments on the impacts of test procedure amendments on the EnergyGuide
and ENERGYSTAR programs.
In the August 2011 SNOPR, DOE addressed comments related to
EnergyGuide impacts. DOE also received the following comment regarding
impacts to the ENERGYSTAR program. NEEA stated that the ENERGYSTAR
program has weathered a number of standards changes for the products
promoted under its brand, and has periodically updated its program
specifications in response to these changes. (NEEA, No. 12 at p. 16)
DOE agrees that the ENERGYSTAR program periodically updates its program
specifications for each product in response to changes in efficiency
standards, as well as changes in the availability of products on the
market. Therefore, DOE expects that the ENERGYSTAR program will be able
to modify its program specifications for clothes washers to incorporate
the integrated efficiency metrics after the compliance date of any
amended standards for clothes washers.
In the August 2011 SNOPR, DOE proposed to amend the estimated
annual operating cost by incorporating the cost of energy consumed in
the non-active washing modes. DOE also proposed to update the number of
annual use cycles, which would affect the estimated annual operating
cost disclosed on the EnergyGuide label. DOE received several comments
related to its proposal to update the annual operating cost, as
described previously in section III.D.
For the reasons described in section III.D and the August 2011
SNOPR, today's final rule amends the estimated annual operating cost by
incorporating the cost of energy consumed in the non-active wash modes.
Today's final rule also updates the annual use cycles, which affects
the estimated annual operating cost. Pursuant to 42 U.S.C. 6294, the
FTC may revise the EnergyGuide label for residential clothes washers.
IV. Procedural Issues and Regulatory Review
A. Review Under Executive Order 12866
The Office of Management and Budget has determined that test
procedure rulemakings do not constitute ``significant regulatory
actions'' under section 3(f) of Executive Order 12866, Regulatory
Planning and Review, 58 FR 51735 (Oct. 4, 1993). Accordingly, this
action was not subject to review under the Executive Order by the
Office of Information and Regulatory Affairs (OIRA) in the Office of
Management and Budget (OMB).
B. Review Under the Regulatory Flexibility Act
The Regulatory Flexibility Act (5 U.S.C. 601 et seq.) requires
preparation of an initial regulatory flexibility analysis (IFRA) for
any rule that by law must be proposed for public comment, unless the
agency certifies that the rule, if promulgated, will not have a
significant economic impact on a substantial number of small entities.
As required by Executive Order 13272, ``Proper Consideration of Small
Entities in Agency Rulemaking,'' 67 FR 53461 (August 16, 2002), DOE
published procedures and policies on February 19, 2003, to ensure that
the potential impacts of its rules on small entities are properly
considered during the DOE rulemaking process. 68 FR 7990. DOE has made
its procedures and policies available on the Office of the General
Counsel's Web site: www.gc.doe.gov.
DOE reviewed today's rule under the provisions of the Regulatory
Flexibility Act and the procedures and policies published on February
19, 2003. DOE has concluded that the rule would not have a significant
impact on a substantial number of small entities. The factual basis for
this certification is as follows:
The Small Business Administration (SBA) considers a business entity
to be small business, if, together with its affiliates, it employs less
than a threshold number of workers specified in 13 CFR part 121. These
size standards and codes are established by the North American Industry
Classification System (NAICS). The threshold number for NAICS
classification code 335224, which applies to household laundry
equipment manufacturers and includes clothes washer manufacturers, is
1,000 employees. Searches of the SBA Web site \14\ to identify clothes
washer manufacturers within these NAICS codes identified, out of
approximately 17 manufacturers supplying clothes washers in the United
States, one small business. This small business manufactures laundry
appliances, including clothes washers. The other manufacturers
supplying clothes washers are large multinational corporations.
---------------------------------------------------------------------------
\14\ A searchable database of certified small businesses is
available online at: https://dsbs.sba.gov/dsbs/search/dsp_dsbs.cfm.
---------------------------------------------------------------------------
Today's final rule would amend DOE's test procedure by
incorporating testing provisions to address active mode, standby mode,
and off mode energy and water consumption that will
[[Page 13934]]
be used to demonstrate compliance with energy conservation standards.
The test procedure amendments for measuring standby and off mode power
using the ``alternative method'' involve measuring power input when the
clothes washer is in inactive mode or off mode, or both if both modes
are available on the clothes washer under test, as a proxy for
measuring power consumption in all low-power modes. These tests can be
conducted in the same facilities used for the current energy testing of
these products, so it is anticipated that manufacturers would not incur
any additional facilities costs as a result of the proposed test
procedure amendments. The power meter required for these tests might
require greater accuracy than the power meter used for current energy
testing, but the investment required for a possible instrumentation
upgrade is expected to be approximately a few thousand dollars. The
duration of each non-active washing mode test period is expected to be
roughly 30-45 minutes, depending on stability of the power, using the
alternate approach described previously. This is comparable to
approximately one-half to two-thirds the time required to conduct a
single energy test wash cycle. Each clothes washer tested requires, on
average, approximately 15 test cycles for energy testing, which equates
to about 3 days of testing. Using the alternate approach adopted in
today's final rule, DOE estimates roughly a 3-percent increase in total
test period duration. DOE notes that the provisions from IEC Standard
62301 (Second Edition) incorporated by reference in today's final rule
would require longer test durations in the event that the threshold
stability criteria of the power measurement are not met. However, based
on DOE's observations during testing for the September 2010 NOPR and
August 2011 SNOPR, the likelihood of such a longer test being required
should be small.
DOE also estimates that it currently costs a manufacturer
approximately $2300 on average, including the cost of consumables, to
conduct energy testing for a particular clothes washer. DOE further
estimates that the cost of additional testing for non-active washing
modes using the alternate approach adopted in today's final rule will
average $75 per machine, a 3 percent increase over current test costs.
DOE does not expect that these additional requirements for
equipment and time and additional cost to conduct the non-active
washing mode will impose a significant economic burden on entities
subject to the applicable testing requirements. Although the small
business has significantly lower sales than other manufacturers over
which to amortize these additional costs, it produces only a single
platform that would be subject to the proposed non-active washing mode
tests.
Furthermore, the test procedure amendments for the active washing
mode adopted in today's final rule will not increase test burden
because they comprise revisions to calculations rather than additional,
longer, or more complex methodology.
In response to the August 2011 SNOPR, ALS stated that it takes no
position on DOE's tentative conclusion that the September 2010 NOPR and
August 2011 SNOPR would not have a significant economic impact on a
substantial number of small entities. ALS stated that it needs to
conduct a significant number of tests utilizing the proposed test
procedure before commenting on the additional burden that falls on
manufacturers. (ALS, No. 22 at p. 3).
For the reasons discussed above, DOE concludes and certifies that
today's final rule will not have a significant economic impact on a
substantial number of small entities. Accordingly, DOE has not prepared
a regulatory flexibility analysis for this rulemaking. DOE has
transmitted the certification and supporting statement of factual basis
to the Chief Counsel for Advocacy of the SBA for review under 5 U.S.C.
605(b).
C. Review Under the Paperwork Reduction Act of 1995
Manufacturers of residential clothes washers must certify to DOE
that their products comply with any applicable energy conservation
standards. In certifying compliance, manufacturers must test their
products according to the DOE test procedures for clothes washers,
including any amendments adopted for those test procedures. DOE has
established regulations for the certification and recordkeeping
requirements for all covered consumer products and commercial
equipment, including residential clothes washers. (76 FR 12422 (March
7, 2011)). The collection-of-information requirement for the
certification and recordkeeping is subject to review and approval by
OMB under the Paperwork Reduction Act (PRA). This requirement has been
approved by OMB under OMB control number 1910-1400. Public reporting
burden for the certification is estimated to average 20 hours per
response, including the time for reviewing instructions, searching
existing data sources, gathering and maintaining the data needed, and
completing and reviewing the collection of information.
Notwithstanding any other provision of the law, no person is
required to respond to, nor shall any person be subject to a penalty
for failure to comply with, a collection of information subject to the
requirements of the PRA, unless that collection of information displays
a currently valid OMB Control Number.
D. Review Under the National Environmental Policy Act of 1969
In this final rule, DOE amends its test procedure for residential
clothes washers. DOE has determined that this rule falls into a class
of actions that are categorically excluded from review under the
National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.) and
DOE's implementing regulations at 10 CFR part 1021. Specifically, this
rule amends an existing rule without affecting the amount, quality or
distribution of energy usage, and, therefore, will not result in any
environmental impacts. Thus, this rulemaking is covered by Categorical
Exclusion A5 under 10 CFR part 1021, subpart D, which applies to any
rulemaking that interprets or amends an existing rule without changing
the environmental effect of that rule. Accordingly, neither an
environmental assessment nor an environmental impact statement is
required.
E. Review Under Executive Order 13132
Executive Order 13132, ``Federalism,'' 64 FR 43255 (August 4, 1999)
imposes certain requirements on agencies formulating and implementing
policies or regulations that preempt State law or that have Federalism
implications. The Executive Order requires agencies to examine the
constitutional and statutory authority supporting any action that would
limit the policymaking discretion of the States and to carefully assess
the necessity for such actions. The Executive Order also requires
agencies to have an accountable process to ensure meaningful and timely
input by State and local officials in the development of regulatory
policies that have Federalism implications. On March 14, 2000, DOE
published a statement of policy describing the intergovernmental
consultation process it will follow in the development of such
regulations. 65 FR 13735. DOE examined this final rule and determined
that it will not have a substantial direct effect on the States, on the
relationship between the national government and the States, or on the
distribution of power and responsibilities among the various levels of
government. EPCA
[[Page 13935]]
governs and prescribes Federal preemption of State regulations as to
energy conservation for the products that are the subject of today's
final rule. States can petition DOE for exemption from such preemption
to the extent, and based on criteria, set forth in EPCA. (42 U.S.C.
6297(d)) No further action is required by Executive Order 13132.
F. Review Under Executive Order 12988
Regarding the review of existing regulations and the promulgation
of new regulations, section 3(a) of Executive Order 12988, ``Civil
Justice Reform,'' 61 FR 4729 (Feb. 7, 1996), imposes on Federal
agencies the general duty to adhere to the following requirements: (1)
Eliminate drafting errors and ambiguity; (2) write regulations to
minimize litigation; (3) provide a clear legal standard for affected
conduct rather than a general standard; and (4) promote simplification
and burden reduction. Section 3(b) of Executive Order 12988
specifically requires that Executive agencies make every reasonable
effort to ensure that the regulation: (1) Clearly specifies the
preemptive effect, if any; (2) clearly specifies any effect on existing
Federal law or regulation; (3) provides a clear legal standard for
affected conduct while promoting simplification and burden reduction;
(4) specifies the retroactive effect, if any; (5) adequately defines
key terms; and (6) addresses other important issues affecting clarity
and general draftsmanship under any guidelines issued by the Attorney
General. Section 3(c) of Executive Order 12988 requires Executive
agencies to review regulations in light of applicable standards in
sections 3(a) and 3(b) to determine whether they are met or it is
unreasonable to meet one or more of them. DOE has completed the
required review and determined that, to the extent permitted by law,
this final rule meets the relevant standards of Executive Order 12988.
G. Review Under the Unfunded Mandates Reform Act of 1995
Title II of the Unfunded Mandates Reform Act of 1995 (UMRA)
requires each Federal agency to assess the effects of Federal
regulatory actions on State, local, and Tribal governments and the
private sector. Public Law 104-4, sec. 201 (codified at 2 U.S.C. 1531).
For a regulatory action resulting in a rule that may cause the
expenditure by State, local, and Tribal governments, in the aggregate,
or by the private sector of $100 million or more in any one year
(adjusted annually for inflation), section 202 of UMRA requires a
Federal agency to publish a written statement that estimates the
resulting costs, benefits, and other effects on the national economy.
(2 U.S.C. 1532(a), (b)) The UMRA also requires a Federal agency to
develop an effective process to permit timely input by elected officers
of State, local, and Tribal governments on a proposed ``significant
intergovernmental mandate,'' and requires an agency plan for giving
notice and opportunity for timely input to potentially affected small
governments before establishing any requirements that might
significantly or uniquely affect small governments. On March 18, 1997,
DOE published a statement of policy on its process for
intergovernmental consultation under UMRA. 62 FR 12820; also available
at www.gc.doe.gov. DOE examined today's final rule according to UMRA
and its statement of policy and determined that the rule contains
neither an intergovernmental mandate, nor a mandate that may result in
the expenditure of $100 million or more in any year, so these
requirements do not apply.
H. Review Under the Treasury and General Government Appropriations Act,
1999
Section 654 of the Treasury and General Government Appropriations
Act, 1999 (Pub. L. 105-277) requires Federal agencies to issue a Family
Policymaking Assessment for any rule that may affect family well-being.
Today's final rule will not have any impact on the autonomy or
integrity of the family as an institution. Accordingly, DOE has
concluded that it is not necessary to prepare a Family Policymaking
Assessment.
I. Review Under Executive Order 12630
DOE has determined, under Executive Order 12630, ``Governmental
Actions and Interference with Constitutionally Protected Property
Rights'' 53 FR 8859 (March 18, 1988), that this regulation will not
result in any takings that might require compensation under the Fifth
Amendment to the U.S. Constitution.
J. Review Under Treasury and General Government Appropriations Act,
2001
Section 515 of the Treasury and General Government Appropriations
Act, 2001 (44 U.S.C. 3516 note) provides for agencies to review most
disseminations of information to the public under guidelines
established by each agency pursuant to general guidelines issued by
OMB. OMB's guidelines were published at 67 FR 8452 (Feb. 22, 2002), and
DOE's guidelines were published at 67 FR 62446 (Oct. 7, 2002). DOE has
reviewed today's final rule under the OMB and DOE guidelines and has
concluded that it is consistent with applicable policies in those
guidelines.
K. Review Under Executive Order 13211
Executive Order 13211, ``Actions Concerning Regulations That
Significantly Affect Energy Supply, Distribution, or Use,'' 66 FR 28355
(May 22, 2001), requires Federal agencies to prepare and submit to OMB,
a Statement of Energy Effects for any significant energy action. A
``significant energy action'' is defined as any action by an agency
that promulgated or is expected to lead to promulgation of a final
rule, and that: (1) Is a significant regulatory action under Executive
Order 12866, or any successor order; and (2) is likely to have a
significant adverse effect on the supply, distribution, or use of
energy; or (3) is designated by the Administrator of OIRA as a
significant energy action. For any significant energy action, the
agency must give a detailed statement of any adverse effects on energy
supply, distribution, or use if the regulation is implemented, and of
reasonable alternatives to the action and their expected benefits on
energy supply, distribution, and use.
Today's regulatory action is not a significant regulatory action
under Executive Order 12866. Moreover, it would not have a significant
adverse effect on the supply, distribution, or use of energy, nor has
it been designated as a significant energy action by the Administrator
of OIRA. Therefore, it is not a significant energy action, and,
accordingly, DOE has not prepared a Statement of Energy Effects.
L. Review Under Section 32 of the Federal Energy Administration Act of
1974
Under section 301 of the Department of Energy Organization Act
(Pub. L. 95-91; 42 U.S.C. 7101), DOE must comply with section 32 of the
Federal Energy Administration Act of 1974, as amended by the Federal
Energy Administration Authorization Act of 1977. (15 U.S.C. 788; FEAA)
Section 32 essentially provides in relevant part that, where a proposed
rule authorizes or requires use of commercial standards, the notice of
proposed rulemaking must inform the public of the use and background of
such standards. In addition, section 32(c) requires DOE to consult with
the Attorney General and the Chairman of the Federal Trade Commission
(FTC) concerning the impact of the commercial or industry standards on
competition.
The amendments to the test procedure in today's final rule
incorporate testing
[[Page 13936]]
methods contained in the following commercial standards:
1. AATCC Test Method 79-2010, Absorbency of Textiles, Revised
2010.
2. AATCC Test Method 118-2007, Oil Repellency: Hydrocarbon
Resistance Test, Revised 2007.
3. AATCC Test Method 135-2010, Dimensional Changes of Fabrics
after Home Laundering.
4. IEC Standard 62301, Household electrical appliances--
Measurement of standby power, Edition 2.0, 2011-01.
DOE has evaluated these standards and is unable to conclude whether
they fully comply with the requirements of section 32(b) of the FEAA
(i.e., whether they were developed in a manner that fully provides for
public participation, comment, and review). DOE has consulted with both
the Attorney General and the Chairman of the FTC about the impact on
using the methods contained in these standards and has received no
comments objecting to their use.
M. Congressional Notification
As required by 5 U.S.C. 801, DOE will report to Congress on the
promulgation of today's rule before its effective date. The report will
state that it has been determined that the rule is not a ``major rule''
as defined by 5 U.S.C. 804(2).
N. Approval of the Office of the Secretary
The Secretary of Energy has approved publication of this final
rule.
List of Subjects
10 CFR Part 429
Confidential business information, Energy conservation, Household
appliances, Imports, Reporting and recordkeeping requirements.
10 CFR Part 430
Administrative practice and procedure, Confidential business
information, Energy conservation, Household appliances, Imports,
Incorporation by reference, Intergovernmental relations, Small
businesses.
Issued in Washington, DC, on February 22, 2012.
Kathleen Hogan,
Deputy Assistant Secretary, Energy Efficiency and Renewable Energy.
For the reasons stated in the preamble, DOE amends parts 429 and
430 of title 10 of the Code of Federal Regulations, as set forth below:
PART 429--CERTIFICATION, COMPLIANCE, AND ENFORCEMENT FOR CONSUMER
PRODUCTS AND COMMERCIAL AND INDUSTRIAL EQUIPMENT
0
1. The authority citation for part 429 continues to read as follows:
Authority: 42 U.S.C. 6291-6317.
0
2. Section 429.20 is amended by:
0
a. Revising paragraph (a)(2)(i) introductory text;
0
b. Revising paragraph (a)(2)(ii) introductory text;
0
c. Adding paragraph (b)(3).
The revisions and addition read as follows:
Sec. 429.20 Residential clothes washers.
(a) * * *
(2) * * *
(i) Any represented value of the water factor, integrated water
factor, the estimated annual operating cost, the energy or water
consumption, or other measure of energy or water consumption of a basic
model for which consumers would favor lower values shall be greater
than or equal to the higher of:
* * * * *
(ii) Any represented value of the modified energy factor,
integrated modified energy factor, or other measure of energy or water
consumption of a basic model for which consumers would favor higher
values shall be less than or equal to the lower of:
* * * * *
(b) * * *
(3) Pursuant to Sec. 429.12(b)(13), a certification report shall
include the following additional product-specific information: When
using appendix J2, a list of all cycle selections comprising the
complete energy test cycle for each basic model.
PART 430--ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS
0
3. The authority citation for part 430 continues to read as follows:
Authority: 42 U.S.C. 6291-6309; 28 U.S.C. 2461 note.
0
4. Section 430.3 is amended by:
0
a. Redesignating paragraphs (c) through (o) as paragraphs (d) through
(p);
0
b. Adding new paragraph (c);
0
c. Revising newly designated paragraphs (m) introductory text and
(m)(2).
The additions and revisions read as follows:
Sec. 430.3 Materials incorporated by reference.
* * * * *
(c) AATCC. American Association of Textile Chemists and Colorists,
P.O. Box 12215, Research Triangle Park, NC 27709, (919) 549-3526, or go
to www.aatcc.org.
(1) AATCC Test Method 79-2010, Absorbency of Textiles, Revised
2010, IBR approved for Appendix J2 to Subpart B.
(2) AATCC Test Method 118-2007, Oil Repellency: Hydrocarbon
Resistance Test, Revised 2007, IBR approved for Appendix J2 to Subpart
B.
(3) AATCC Test Method 135-2010, Dimensional Changes of Fabrics
after Home Laundering, Revised 2010, IBR approved for Appendix J2 to
Subpart B.
* * * * *
(m) IEC. International Electrotechnical Commission, available from
the American National Standards Institute, 25 W. 43rd Street, 4th
Floor, New York, NY 10036, (212) 642-4900, or go to https://webstore.ansi.org.
* * * * *
(2) IEC Standard 62301 (``IEC 62301''), Household electrical
appliances--Measurement of standby power, Edition 2.0, 2011-01, IBR
approved for Appendix J2 to Subpart B.
* * * * *
0
5. Section 430.23 is amended by revising paragraph (j) to read as
follows:
Sec. 430.23 Test procedures for the measurement of energy and water
consumption.
* * * * *
(j) Clothes washers. (1) The estimated annual operating cost for
automatic and semi-automatic clothes washers must be rounded off to the
nearest dollar per year and is defined as follows:
(i) When using appendix J2 (see the note at the beginning of
appendix J2),
(A) When electrically heated water is used,
(N1 x ETE1 x CKWH)
Where:
N1 = the representative average residential clothes
washer use of 392 cycles per year according to appendix J1,
ETE1 = the total per-cycle energy consumption when
electrically heated water is used, in kilowatt-hours per cycle,
determined according to section 4.1.7 of appendix J1, and
CKWH = the representative average unit cost, in dollars
per kilowatt-hour, as provided by the Secretary.
(B) When gas-heated or oil-heated water is used,
(N1 x ((MET1 x CKWH) +
(HETG1 x CBTU)))
Where:
N1 and CKWH are defined in paragraph
(j)(1)(i)(A) of this section,
[[Page 13937]]
MET1 = the total weighted per-cycle machine electrical
energy consumption, in kilowatt-hours per cycle, determined
according to section 4.1.6 of appendix J1,
HETG1 = the total per-cycle hot water energy consumption
using gas-heated or oil-heated water, in Btu per cycle, determined
according to section 4.1.4 of appendix J1, and
CBTU = the representative average unit cost, in dollars
per Btu for oil or gas, as appropriate, as provided by the
Secretary.
(ii) When using appendix J2,
(A) When electrically heated water is used,
(N2 x (ETE2 + ETSO) x CKWH)
Where:
N2 = the representative average residential clothes
washer use of 295 cycles per year according to appendix J2,
ETE2 = the total per-cycle energy consumption when
electrically heated water is used, in kilowatt-hours per cycle,
determined according to section 4.1.7 of appendix J2,
ETSO = the per-cycle combined low-power mode energy
consumption, in kilowatt-hours per cycle, determined according to
section 4.4 of appendix J2, and
CKWH = the representative average unit cost, in dollars
per kilowatt-hour, as provided by the Secretary.
(B) When gas-heated or oil-heated water is used,
(N2 x ((MET2 + ETSO) x
CKWH) + (HETG2 x CBTU))
Where:
N2 and ETSO are defined in (j)(1)(ii)(A) of
this section,
MET2 = the total weighted per-cycle machine electrical
energy consumption, in kilowatt-hours per cycle, determined
according to section 4.1.6 of appendix J2,
CKWH = the representative average unit cost, in dollars
per kilowatt-hour, as provided by the Secretary,
HETG2 = the total per-cycle hot water energy consumption
using gas-heated or oil-heated water, in Btu per cycle, determined
according to section 4.1.4 of appendix J2,
CBTU = the representative average unit cost, in dollars
per Btu for oil or gas, as appropriate, as provided by the
Secretary.
(2)(i) The modified energy factor for automatic and semi-automatic
clothes washers is determined according to section 4.4 of appendix J1
(when using appendix J1) and section 4.5 of appendix J2 (when using
appendix J2). The result shall be rounded off to the nearest 0.01 cubic
foot per kilowatt-hour per cycle.
(ii) The integrated modified energy factor for automatic and semi-
automatic clothes washers is determined according to section 4.6 of
appendix J2 (when using appendix J2). The result shall be rounded off
to the nearest 0.01 cubic foot per kilowatt-hour per cycle.
(3) Other useful measures of energy consumption for automatic or
semi-automatic clothes washers shall be those measures of energy
consumption which the Secretary determines are likely to assist
consumers in making purchasing decisions and which are derived from the
application of appendix J1 or appendix J2, as appropriate. In addition,
the annual water consumption of a clothes washer can be determined as:
(i) When using appendix J1, the product of the representative
average-use of 392 cycles per year and the total weighted per-cycle
water consumption in gallons per cycle determined according to section
4.2.2 of appendix J1. The water factor can be determined according to
section 4.2.3 of appendix J1, with the result rounded off to the
nearest 0.1 gallons per cycle per cubic foot. The remaining moisture
content can be determined according to section 3.8 of appendix J1, with
the result rounded off to the nearest 0.1 percent.
(ii) When using appendix J2, the product of the representative
average-use of 295 cycles per year and the total weighted per-cycle
water consumption for all wash cycles, in gallons per cycle, determined
according to section 4.2.11 of appendix J2. The water factor can be
determined according to section 4.2.12 of appendix J2, with the result
rounded off to the nearest 0.1 gallons per cycle per cubic foot. The
integrated water factor can be determined according to section 4.2.13
of appendix J2, with the result rounded off to the nearest 0.1 gallons
per cycle per cubic foot. The remaining moisture content can be
determined according to section 3.8 of appendix J2, with the result
rounded off to the nearest 0.1 percent.
* * * * *
Appendix J to Subpart B of Part 430--[Removed]
0
6. Appendix J to subpart B of part 430 is removed.
Appendix J1--[Amended]
0
7. Appendix J1 to subpart B of part 430 is amended by:
0
a. Revising the introductory text;
0
b. Revising section 1.19;
0
c. Revising section 1.22;
0
d. Removing sections 2.6.1.1 through 2.6.1.2.4;
0
e. Revising section 2.6.3.1;
0
f. Revising section 2.6.4.3
0
g. Revising section 2.6.4.5.3(b);
0
h. Revising section 2.6.6.1;
0
i. Revising section 2.6.6.2;
0
j. Revising section 2.10;
0
k. Revising section 3.6;
0
l. Revising section 4.1.4;
0
m. Revising section 4.2;
0
n. Revising section 4.2.3;
0
o. Removing section 4.5;
0
p. Revising section 5; and
0
q. Revising section 6.2.
The revisions read as follows:
Appendix J1 to Subpart B of Part 430--Uniform Test Method for Measuring
the Energy Consumption of Automatic and Semi-Automatic Clothes Washers
Manufacturers may use Appendix J1 to certify compliance with
existing DOE energy conservation standards until the compliance date
of any amended standards that address standby and off mode power
consumption for residential clothes washers. After this date, all
residential clothes washers shall be tested using the provisions of
Appendix J2.
* * * * *
1.19 Water factor means the quotient of the total weighted per-
cycle water consumption divided by the cubic foot (or liter)
capacity of the clothes washer.
* * * * *
1.22 Cold rinse means the coldest rinse temperature available on
the machine.
* * * * *
2.6.3.1 Perform 5 complete normal wash-rinse-spin cycles, the
first two with current AHAM Standard detergent Formula 3 and the
last three without detergent. Place the test cloth in a clothes
washer set at the maximum water level. Wash the load for ten minutes
in soft water (17 ppm hardness or less) using 27.0 grams + 4.0 grams
per pound of cloth load of AHAM Standard detergent Formula 3. The
wash temperature is to be controlled to 135 [deg]F 5
[deg]F (57.2 [deg]C 2.8 [deg]C) and the rinse
temperature is to be controlled to 60 [deg]F 5 [deg]F
(15.6 [deg]C 2.8 [deg]C). Repeat the cycle with
detergent and then repeat the cycle three additional times without
detergent, bone drying the load between cycles (total of five wash
and rinse cycles).
* * * * *
2.6.4.3 The thread count shall be 65 x 57 per inch (warp x
fill), 2 percent.
* * * * *
2.6.4.5.3. * * *
(b) Copies of the above standards incorporated by reference can
be obtained from the American Association of Textile Chemists and
Colorists, P.O. Box 12215, Research Triangle Park, NC 27709,
telephone (919) 549-3526, fax (919) 549-8933, or email:
orders@aatcc.org.
* * * * *
2.6.6.1 Average the values of 3 test runs and fill in Table
2.6.5 of this appendix. Perform a linear least-squares fit to
determine coefficients A and B such that the standard RMC values
shown in Table 2.6.6.1 of this appendix (RMCstandard) are
linearly related to the RMC values measured in section 2.6.5 of this
appendix (RMCcloth):
RMCstandard ~ A * RMCcloth + B
where A and B are coefficients of the linear least-squares fit.
* * * * *
2.6.6.2 Perform an analysis of variance with replication test
using two factors, spin
[[Page 13938]]
speed and lot, to check the interaction of speed and lot. Use the
values from Table 2.6.5 and Table 2.6.6.1 of this Appendix in the
calculation. The ``P'' value of the F-statistic for interaction
between spin speed and lot in the variance analysis shall be greater
than or equal to 0.1. If the ``P'' value is less than 0.1, the test
cloth is unacceptable. ``P'' is a theoretically based measure of
interaction based on an analysis of variance.
* * * * *
2.10 Wash time setting. If one wash time is prescribed in the
energy test cycle, that shall be the wash time setting; otherwise,
the wash time setting shall be the higher of either the minimum or
70 percent of the maximum wash time available in the energy test
cycle, regardless of the labeling of suggested dial locations. If
the clothes washer is equipped with an electromechanical dial
controlling wash time, reset the dial to the minimum wash time and
then turn it in the direction of increasing wash time to reach the
appropriate setting. If the appropriate setting is passed, return
the dial to the minimum wash time and then turn in the direction of
increasing wash time until the setting is reached.
* * * * *
3.6 ``Cold Wash'' (Minimum Wash Temperature Selection). Water
and electrical energy consumption shall be measured for each water
fill level or test load size as specified in sections 3.6.1 through
3.6.3 of this Appendix for the coldest wash temperature selection
available. For a clothes washer that offers two or more wash
temperature settings labeled as cold, such as ``Cold'' and ``Tap
Cold'', the setting with the minimum wash temperature shall be
considered the cold wash. If any of the other cold wash temperature
settings add hot water to raise the wash temperature above the cold
water supply temperature, as defined in section 2.3 of this
Appendix, those setting(s) shall be considered warm wash setting(s),
as defined in section 1.18 of this Appendix. If none of the cold
wash temperature settings add hot water for any of the water fill
levels or test load sizes required for the energy test cycle, the
wash temperature setting labeled as ``Cold'' shall be considered the
cold wash, and the other wash temperature setting(s) labeled as cold
shall not be required for testing.
* * * * *
4.1.4 Total per-cycle hot water energy consumption using gas-
heated or oil-heated water. Calculate for the energy test cycle the
per-cycle hot water consumption, HETG, using gas-heated
or oil-heated water, expressed in Btu per cycle (or megajoules per
cycle) and defined as:
HETG=HETx1/ex3412 Btu/kWh or
HETG=HETx1/ex3.6 MJ/kWh
Where:
e = Nominal gas or oil water heater efficiency=0.75.
HET = As defined in 4.1.3.
* * * * *
4.2.3 Water factor. Calculate the water factor, WF, expressed in
gallons per cycle per cubic foot (or liters per cycle per liter),
as:
WF = QT/C
Where:
QT = As defined in section 4.2.2.
C = As defined in section 3.1.5.
* * * * *
5. Test Loads
Table 5.1--Test Load Sizes
--------------------------------------------------------------------------------------------------------------------------------------------------------
Container volume Minimum load Maximum load Average load
--------------------------------------------------------------------------------------------------------------------------------------------------------
cu. ft. >= < liter >= < lb kg lb kg lb kg
--------------------------------------------------------------------------------------------------------------------------------------------------------
0-0.80..................................... 0-22.7....................... 3.00 1.36 3.00 1.36 3.00 1.36
0.80-0.90.................................. 22.7-25.5.................... 3.00 1.36 3.50 1.59 3.25 1.47
0.90-1.00.................................. 25.5-28.3.................... 3.00 1.36 3.90 1.77 3.45 1.56
1.00-1.10.................................. 28.3-31.1.................... 3.00 1.36 4.30 1.95 3.65 1.66
1.10-1.20.................................. 31.1-34.0.................... 3.00 1.36 4.70 2.13 3.85 1.75
1.20-1.30.................................. 34.0-36.8.................... 3.00 1.36 5.10 2.31 4.05 1.84
1.30-1.40.................................. 36.8-39.6.................... 3.00 1.36 5.50 2.49 4.25 1.93
1.40-1.50.................................. 39.6-42.5.................... 3.00 1.36 5.90 2.68 4.45 2.02
1.50-1.60.................................. 42.5-45.3.................... 3.00 1.36 6.40 2.90 4.70 2.13
1.60-1.70.................................. 45.3-48.1.................... 3.00 1.36 6.80 3.08 4.90 2.22
1.70-1.80.................................. 48.1-51.0.................... 3.00 1.36 7.20 3.27 5.10 2.31
1.80-1.90.................................. 51.0-53.8.................... 3.00 1.36 7.60 3.45 5.30 2.40
1.90-2.00.................................. 53.8-56.6.................... 3.00 1.36 8.00 3.63 5.50 2.49
2.00-2.10.................................. 56.6-59.5.................... 3.00 1.36 8.40 3.81 5.70 2.59
2.10-2.20.................................. 59.5-62.3.................... 3.00 1.36 8.80 3.99 5.90 2.68
2.20-2.30.................................. 62.3-65.1.................... 3.00 1.36 9.20 4.17 6.10 2.77
2.30-2.40.................................. 65.1-68.0.................... 3.00 1.36 9.60 4.35 6.30 2.86
2.40-2.50.................................. 68.0-70.8.................... 3.00 1.36 10.00 4.54 6.50 2.95
2.50-2.60.................................. 70.8-73.6.................... 3.00 1.36 10.50 4.76 6.75 3.06
2.60-2.70.................................. 73.6-76.5.................... 3.00 1.36 10.90 4.94 6.95 3.15
2.70-2.80.................................. 76.5-79.3.................... 3.00 1.36 11.30 5.13 7.15 3.24
2.80-2.90.................................. 79.3-82.1.................... 3.00 1.36 11.70 5.31 7.35 3.33
2.90-3.00.................................. 82.1-85.0.................... 3.00 1.36 12.10 5.49 7.55 3.42
3.00-3.10.................................. 85.0-87.8.................... 3.00 1.36 12.50 5.67 7.75 3.52
3.10-3.20.................................. 87.8-90.6.................... 3.00 1.36 12.90 5.85 7.95 3.61
3.20-3.30.................................. 90.6-93.4.................... 3.00 1.36 13.30 6.03 8.15 3.70
3.30-3.40.................................. 93.4-96.3.................... 3.00 1.36 13.70 6.21 8.35 3.79
3.40-3.50.................................. 96.3-99.1.................... 3.00 1.36 14.10 6.40 8.55 3.88
3.50-3.60.................................. 99.1-101.9................... 3.00 1.36 14.60 6.62 8.80 3.99
3.60-3.70.................................. 101.9-104.8.................. 3.00 1.36 15.00 6.80 9.00 4.08
3.70-3.80.................................. 104.8-107.6.................. 3.00 1.36 15.40 6.99 9.20 4.17
3.80-3.90.................................. 107.6-110.4.................. 3.00 1.36 15.80 7.16 9.40 4.26
3.90-4.00.................................. 110.4-113.3.................. 3.00 1.36 16.20 7.34 9.60 4.35
4.00-4.10.................................. 113.3-116.1.................. 3.00 1.36 16.60 7.53 9.80 4.45
4.10-4.20.................................. 116.1-118.9.................. 3.00 1.36 17.00 7.72 10.00 4.54
4.20-4.30.................................. 118.9-121.8.................. 3.00 1.36 17.40 7.90 10.20 4.63
4.30-4.40.................................. 121.8-124.6.................. 3.00 1.36 17.80 8.09 10.40 4.72
4.40-4.50.................................. 124.6-127.4.................. 3.00 1.36 18.20 8.27 10.60 4.82
4.50-4.60.................................. 127.4-130.3.................. 3.00 1.36 18.70 8.46 10.85 4.91
4.60-4.70.................................. 130.3-133.1.................. 3.00 1.36 19.10 8.65 11.05 5.00
[[Page 13939]]
4.70-4.80.................................. 133.1-135.9.................. 3.00 1.36 19.50 8.83 11.25 5.10
4.80-4.90.................................. 135.9-138.8.................. 3.00 1.36 19.90 9.02 11.45 5.19
4.90-5.00.................................. 138.8-141.6.................. 3.00 1.36 20.30 9.20 11.65 5.28
5.00-5.10.................................. 141.6-144.4.................. 3.00 1.36 20.70 9.39 11.85 5.38
5.10-5.20.................................. 144.4-147.2.................. 3.00 1.36 21.10 9.58 12.05 5.47
5.20-5.30.................................. 147.2-150.1.................. 3.00 1.36 21.50 9.76 12.25 5.56
5.30-5.40.................................. 150.1-152.9.................. 3.00 1.36 21.90 9.95 12.45 5.65
5.40-5.50.................................. 152.9-155.7.................. 3.00 1.36 22.30 10.13 12.65 5.75
5.50-5.60.................................. 155.7-158.6.................. 3.00 1.36 22.80 10.32 12.90 5.84
5.60-5.70.................................. 158.6-161.4.................. 3.00 1.36 23.20 10.51 13.10 5.93
5.70-5.80.................................. 161.4-164.2.................. 3.00 1.36 23.60 10.69 13.30 6.03
5.80-5.90.................................. 164.2-167.1.................. 3.00 1.36 24.00 10.88 13.50 6.12
5.90-6.00.................................. 167.1-169.9.................. 3.00 1.36 24.40 11.06 13.70 6.21
--------------------------------------------------------------------------------------------------------------------------------------------------------
Notes: (1) All test load weights are bone dry weights.
(2) Allowable tolerance on the test load weights are 0.10 lbs (0.05 kg).
* * * * *
6.2 Nonconventional Wash System Energy Consumption Test. The
field test may consist of a minimum of 10 of the nonconventional
clothes washers (``test clothes washers'') and 10 clothes washers
already being distributed in commerce (``base clothes washers'').
The tests should include a minimum of 50 energy test cycles per
clothes washer. The test clothes washers and base clothes washers
should be identical in construction except for the controls or
systems being tested. Equal numbers of both the test clothes washer
and the base clothes washer should be tested simultaneously in
comparable settings to minimize seasonal or consumer laundering
conditions or variations. The clothes washers should be monitored in
such a way as to accurately record the average total energy and
water consumption per cycle, including water heating energy when
electrically heated water is used, and the energy required to remove
the remaining moisture of the test load. The field test results
should be used to determine the best method to correlate the rating
of the test clothes washer to the rating of the base clothes washer.
* * * * *
0
6. Add a new Appendix J2 to subpart B of part 430 to read as follows:
Appendix J2 to Subpart B of Part 430--Uniform Test Method for Measuring
the Energy Consumption of Automatic and Semi-Automatic Clothes Washers
Manufacturers may use Appendix J1 to certify compliance with
existing DOE energy conservation standards until the compliance date
of any amended standards that address standby and off mode power
consumption for residential clothes washers. After this date, all
residential clothes washers shall be tested using the provisions of
Appendix J2.
1. Definitions and Symbols
1.1 Active mode means a mode in which the clothes washer is
connected to a mains power source, has been activated, and is
performing one or more of the main functions of washing, soaking,
tumbling, agitating, rinsing, and/or removing water from the
clothing, or is involved in functions necessary for these main
functions, such as admitting water into the washer or pumping water
out of the washer. Active mode also includes delay start and cycle
finished modes.
1.2 Active washing mode means a mode in which the clothes washer
is performing any of the operations included in a complete cycle
intended for washing a clothing load, including the main functions
of washing, soaking, tumbling, agitating, rinsing, and/or removing
water from the clothing.
1.3 Adaptive control system means a clothes washer control
system, other than an adaptive water fill control system, which is
capable of automatically adjusting washer operation or washing
conditions based on characteristics of the clothes load placed in
the clothes container, without allowing or requiring consumer
intervention or actions. The automatic adjustments may, for example,
include automatic selection, modification, or control of any of the
following: Wash water temperature, agitation or tumble cycle time,
number of rinse cycles, and spin speed. The characteristics of the
clothes load, which could trigger such adjustments, could, for
example, consist of or be indicated by the presence of either soil,
soap, suds, or any other additive laundering substitute or
complementary product.
Note: Appendix J2 does not provide a means for determining the
energy consumption of a clothes washer with an adaptive control
system. A waiver must be obtained pursuant to 10 CFR 430.27 to
establish an acceptable test procedure for each such clothes washer.
1.4 Adaptive water fill control system means a clothes washer
water fill control system which is capable of automatically
adjusting the water fill level based on the size or weight of the
clothes load placed in the clothes container, without allowing or
requiring consumer intervention or actions.
1.5 Bone-dry means a condition of a load of test cloth which has
been dried in a dryer at maximum temperature for a minimum of 10
minutes, removed and weighed before cool down, and then dried again
for 10 minute periods until the final weight change of the load is 1
percent or less.
1.6 Clothes container means the compartment within the clothes
washer that holds the clothes during the operation of the machine.
1.7 Cold rinse means the coldest rinse temperature available on
the machine.
1.8 Combined low-power mode means the aggregate of available
modes other than active washing mode, including inactive mode, off
mode, delay start mode, and cycle finished mode.
1.9 Compact means a clothes washer which has a clothes container
capacity of less than 1.6 ft\3\ (45 L).
1.10 Cycle finished mode means an active mode which provides
continuous status display, intermittent tumbling, or air circulation
following operation in active washing mode.
1.11 Deep rinse cycle means a rinse cycle in which the clothes
container is filled with water to a selected level and the clothes
load is rinsed by agitating it or tumbling it through the water.
1.12 Delay start mode means an active mode in which activation
of active washing mode is facilitated by a timer.
1.13 Energy test cycle for a basic model means:
(A) The cycle selection recommended by the manufacturer for
washing cotton or linen clothes, and includes all wash/rinse
temperature selections for each of the temperature use factors
(TUFs) offered in that cycle, and
(B) If the cycle selection described in Part (A) does not
include all wash/rinse temperature selections for each of the TUFs
available on the clothes washer, the energy test cycle shall
include, in addition to Part (A), the alternate cycle selection(s)
offering these remaining wash/rinse temperature selection(s), tested
only at the wash/rinse temperature selection(s) for each TUF not
available on the cycle selection described in Part (A).
Where multiple alternate cycle selections offer a wash/rinse
temperature selection for which a TUF has been developed, and that
is not available on the cycle selection
[[Page 13940]]
recommended by the manufacturer for washing cotton or linen clothes
described in Part (A), the alternate cycle selection certified by
the manufacturer to have the highest energy consumption for that
TUF, as measured according to section 2.13, shall be included in the
energy test cycle, so that each TUF that is available on the clothes
washer has been tested once.
(C) All cycle selections included under Part (A) and all cycle
selections included under Part (B) shall be tested using each
appropriate load size as defined in section 2.8 and Table 5.1 of
this appendix.
(D) For any cycle selection tested under (A) or (B), the
manufacturer default settings shall be used, except for the
temperature selection, if necessary. This includes wash conditions
such as agitation/tumble operation, soil level, spin speed(s), wash
times, rinse times, and all other wash parameters or optional
features applicable to that cycle, including water heating time for
water heating clothes washers.
(E) Each wash cycle included as part of the energy test cycle
shall include the entire active washing mode and exclude any delay
start or cycle finished modes.
(F) The energy test cycle shall not include any cycle, if
available, that is dedicated for cleaning, deodorizing, or
sanitizing the clothes washer, and is separate from clothes washing
cycles.
1.14 IEC 62301 means the test standard published by the
International Electrotechnical Commission, entitled ``Household
electrical appliances-Measurement of standby power,'' Publication
62301, Edition 2.0 2011-01 (incorporated by reference; see Sec.
430.3).
1.15 Inactive mode means a standby mode that facilitates the
activation of active mode by remote switch (including remote
control), internal sensor, or timer, or that provides continuous
status display.
1.16 Integrated modified energy factor means the quotient of the
cubic foot (or liter) capacity of the clothes container divided by
the total clothes washer energy consumption per cycle, with such
energy consumption expressed as the sum of:
(a) The machine electrical energy consumption;
(b) The hot water energy consumption;
(c) The energy required for removal of the remaining moisture in
the wash load; and
(d) The combined low-power mode energy consumption.
1.17 Integrated water factor means the quotient of the total
weighted per-cycle water consumption for all wash cycles in gallons
divided by the cubic foot (or liter) capacity of the clothes washer.
1.18 Load usage factor means the percentage of the total number
of wash loads that a user would wash a particular size (weight)
load.
1.19 Lot means a quantity of cloth that has been manufactured
with the same batches of cotton and polyester during one continuous
process.
1.20 Manual control system means a clothes washer control system
which requires that the consumer make the choices that determine
washer operation or washing conditions, such as, for example, wash/
rinse temperature selections and wash time, before starting the
cycle.
1.21 Manual water fill control system means a clothes washer
water fill control system which requires the consumer to determine
or select the water fill level.
1.22 Modified energy factor means the quotient of the cubic foot
(or liter) capacity of the clothes container divided by the total
clothes washer energy consumption per cycle, with such energy
consumption expressed as the sum of the machine electrical energy
consumption, the hot water energy consumption, and the energy
required for removal of the remaining moisture in the wash load.
1.23 Non-water-heating clothes washer means a clothes washer
which does not have an internal water heating device to generate hot
water.
1.24 Off mode means a mode in which the clothes washer is
connected to a mains power source and is not providing any active or
standby mode function, and where the mode may persist for an
indefinite time. An indicator that only shows the user that the
product is in the off position is included within the classification
of an off mode.
1.25 Roll means a subset of a lot.
1.26 Spray rinse cycle means a rinse cycle in which water is
sprayed onto the clothes for a period of time without maintaining
any specific water level in the clothes container.
1.27 Standard means a clothes washer which has a clothes
container capacity of 1.6 ft\3\ (45 L) or greater.
1.28 Standby mode means any mode in which the clothes washer is
connected to a mains power source and offers one or more of the
following user oriented or protective functions that may persist for
an indefinite time:
(a) To facilitate the activation of other modes (including
activation or deactivation of active mode) by remote switch
(including remote control), internal sensor, or timer;
(b) Continuous functions, including information or status
displays (including clocks) or sensor-based functions.
A timer is a continuous clock function (which may or may not be
associated with a display) that provides regular scheduled tasks
(e.g., switching) and that operates on a continuous basis.
1.29 Symbol usage. The following identity relationships are
provided to help clarify the symbology used throughout this
procedure.
C--Capacity
C (with subscripts)--Cold Water Consumption
D--Energy Consumption for Removal of Moisture from Test Load
E--Electrical Energy Consumption
F--Load Usage Factor
H--Hot Water Consumption
HE--Hot Water Energy Consumption
ME--Machine Electrical Energy Consumption
P--Power
Q--Water Consumption
RMC--Remaining Moisture Content
S--Annual Hours
TUF--Temperature Use Factor
V--Temperature-Weighted Hot Water Consumption
W--Mass of Water
WC--Weight of Test Load After Extraction
WI--Initial Weight of Dry Test Load
Subscripts:
a or avg--Average Test Load
B--Part B of the Energy Test Cycle
c--Cold Wash (minimum wash temp.)
corr--Corrected (RMC values)
h--Hot Wash (maximum wash temp. <=135 [deg]F (57.2 [deg]C))
ia--Inactive Mode
LP--Combined Low-Power Mode
m--Extra Hot Wash (maximum wash temp. >135 [deg]F (57.2 [deg]C))
n--Minimum Test Load
o--Off Mode
oi--Combined Off and Inactive Modes
T--Total
w--Warm Wash
ww--Warm Wash/Warm Rinse
x--Maximum Test Load
The following examples are provided to show how the above
symbols can be used to define variables:
Emx = ``Electrical Energy Consumption'' for an ``Extra
Hot Wash'' and ``Maximum Test Load''
HEmin = ``Hot Water Energy Consumption'' for the
``Minimum Test Load''
Pia = ``Power'' in ``Inactive Mode''
Qhmin = ``Water Consumption'' for a ``Hot Wash'' and
``Minimum Test Load''
TUFm = ``Temperature Use Factor'' for an ``Extra Hot
Wash''
1.30 Temperature use factor means, for a particular wash/rinse
temperature setting, the percentage of the total number of wash
loads that an average user would wash with that setting.
1.31 Thermostatically controlled water valves means clothes
washer controls that have the ability to sense and adjust the hot
and cold supply water.
1.32 Uniformly distributed warm wash temperature selection(s)
means (A) multiple warm wash selections for which the warm wash
water temperatures have a linear relationship with all discrete warm
wash selections when the water temperatures are plotted against
equally spaced consecutive warm wash selections between the hottest
warm wash and the coldest warm wash. If the warm wash has infinite
selections, the warm wash water temperature has a linear
relationship with the distance on the selection device (e.g. dial
angle or slide movement) between the hottest warm wash and the
coldest warm wash. The criteria for a linear relationship as
specified above is that the difference between the actual water
temperature at any warm wash selection and the point where that
temperature is depicted on the temperature/selection line formed by
connecting the warmest and the coldest warm selections is less than
5 percent. In all cases, the mean water temperature of
the warmest and the coldest warm selections must coincide with the
mean of the ``hot wash'' (maximum wash temperature <=135 [deg]F
(57.2 [deg]C)) and ``cold wash'' (minimum wash temperature) water
temperatures within 3.8 [deg]F (2.1 [deg]C);
or (B) on a clothes washer with only one warm wash temperature
selection, a warm wash temperature selection with a water
temperature that coincides with
[[Page 13941]]
the mean of the ``hot wash'' (maximum wash temperature <=135 [deg]F
(57.2 [deg]C)) and ``cold wash'' (minimum wash temperature) water
temperatures within 3.8 [deg]F (2.1 [deg]C).
1.33 Warm rinse means the hottest rinse temperature available on
the machine.
1.34 Warm wash means all wash temperature selections that are
below the maximum wash temperature <=135 [deg]F (57.2 [deg]C) and
above the minimum wash temperature.
1.35 Water factor means the quotient of the total weighted per-
cycle water consumption for cold wash divided by the cubic foot (or
liter) capacity of the clothes washer.
1.36 Water-heating clothes washer means a clothes washer where
some or all of the hot water for clothes washing is generated by a
water heating device internal to the clothes washer.
2. Testing Conditions
2.1 Installation. Install the clothes washer in accordance with
manufacturer's instructions. For combined low-power mode testing,
the product shall be installed in accordance with Section 5,
Paragraph 5.2 of IEC 62301 (incorporated by reference; see Sec.
430.3), disregarding the provisions regarding batteries and the
determination, classification, and testing of relevant modes.
2.2 Electrical energy supply.
2.2.1 Supply voltage and frequency. Maintain the electrical
supply at the clothes washer terminal block within 2 percent of 120,
120/240, or 120/208Y volts as applicable to the particular terminal
block wiring system and within 2 percent of the nameplate frequency
as specified by the manufacturer. If the clothes washer has a dual
voltage conversion capability, conduct test at the highest voltage
specified by the manufacturer.
2.2.2 Supply voltage waveform. For the combined low-power mode
testing, maintain the electrical supply voltage waveform indicated
in Section 4, Paragraph 4.3.2 of IEC 62301. If the power measuring
instrument used for testing is unable to measure and record the
total harmonic content during the test measurement period, it is
acceptable to measure and record the total harmonic content
immediately before and after the test measurement period.
2.3 Supply Water.
2.3.1 Clothes washers in which electrical energy consumption or
water energy consumption are affected by the inlet water
temperature. (For example, water heating clothes washers or clothes
washers with thermostatically controlled water valves.). The
temperature of the hot water supply at the water inlets shall not
exceed 135 [deg]F (57.2 [deg]C) and the cold water supply at the
water inlets shall not exceed 60 [deg]F (15.6 [deg]C). A water meter
shall be installed in both the hot and cold water lines to measure
water consumption.
2.3.2 Clothes washers in which electrical energy consumption and
water energy consumption are not affected by the inlet water
temperature. The temperature of the hot water supply shall be
maintained at 135 [deg]F 5 [deg]F (57.2 [deg]C 2.8 [deg]C) and the cold water supply shall be maintained at
60 [deg]F 5 [deg]F (15.6 [deg]C 2.8
[deg]C). A water meter shall be installed in both the hot and cold
water lines to measure water consumption.
2.4 Water pressure. The static water pressure at the hot and
cold water inlet connection of the clothes washer shall be
maintained at 35 pounds per square inch gauge (psig) 2.5
psig (241.3 kPa 17.2 kPa) when the water is flowing. The
static water pressure for a single water inlet connection shall be
maintained at 35 psig 2.5 psig (241.3 kPa 17.2 kPa) when the water is flowing. A water pressure gauge
shall be installed in both the hot and cold water lines to measure
water pressure.
2.5 Instrumentation. Perform all test measurements using the
following instruments, as appropriate:
2.5.1 Weighing scales.
2.5.1.1 Weighing scale for test cloth. The scale shall have a
resolution of no larger than 0.2 oz (5.7 g) and a maximum error no
greater than 0.3 percent of the measured value.
2.5.1.2 Weighing scale for clothes container capacity
measurement. The scale should have a resolution no larger than 0.50
lbs (0.23 kg) and a maximum error no greater than 0.5 percent of the
measured value.
2.5.2 Watt-hour meter. The watt-hour meter shall have a
resolution no larger than 1 Wh (3.6 kJ) and a maximum error no
greater than 2 percent of the measured value for any demand greater
than 50 Wh (180.0 kJ).
2.5.3 Watt meter. The watt meter used to measure combined low-
power mode power consumption shall comply with the requirements
specified in Section 4, Paragraph 4.4 of IEC 62301. If the power
measuring instrument used for testing is unable to measure and
record the crest factor, power factor, or maximum current ratio
during the test measurement period, it is acceptable to measure and
record the crest factor, power factor, and maximum current ratio
immediately before and after the test measurement period.
2.5.4 Temperature measuring device. The device shall have an
error no greater than 1[emsp14][deg]F (0.6
[deg]C) over the range being measured.
2.5.5 Water meter. The water meter shall have a resolution no
larger than 0.1 gallons (0.4 liters) and a maximum error no greater
than 2 percent for the water flow rates being measured.
2.5.6 Water pressure gauge. The water pressure gauge shall have
a resolution of 1 pound per square inch gauge (psig) (6.9 kPa) and
shall have an error no greater than 5 percent of any measured value.
2.6 Test cloths.
2.6.1 Energy Test Cloth. The energy test cloth shall be made
from energy test cloth material, as specified in section 2.6.4 of
this Appendix, that is 24 \1/2\ inches by 36 \1/2\ inches (61.0 1.3 cm by 91.4
1.3 cm) and has been hemmed to 22 \1/2\ inches by 34
\1/2\ inches (55.9 1.3 cm by 86.4 1.3 cm) before washing. The energy test cloth shall be clean
and shall not be used for more than 60 test runs (after
preconditioning as specified in 2.6.3 of this appendix). All energy
test cloth must be permanently marked identifying the lot number of
the material. Mixed lots of material shall not be used for testing a
clothes washer.
2.6.2 Energy Stuffer Cloth. The energy stuffer cloth shall be
made from energy test cloth material, as specified in section 2.6.4
of this Appendix, and shall consist of pieces of material that are
12 \1/4\ inches by 12 \1/4\ inches (30.5
0.6 cm by 30.5 0.6 cm) and have been
hemmed to 10 \1/4\ inches by 10 \1/4\
inches (25.4 0.6 cm by 25.4 0.6 cm) before
washing. The energy stuffer cloth shall be clean and shall not be
used for more than 60 test runs (after preconditioning as specified
in section 2.6.3 of this Appendix). All energy stuffer cloth must be
permanently marked identifying the lot number of the material. Mixed
lots of material shall not be used for testing a clothes washer.
2.6.3 Preconditioning of Test Cloths. The new test cloths,
including energy test cloths and energy stuffer cloths, shall be
pre-conditioned in a clothes washer in the following manner:
2.6.3.1 Perform 5 complete normal wash-rinse-spin cycles, the
first two with AHAM Standard detergent Formula 3 and the last three
without detergent. Place the test cloth in a clothes washer set at
the maximum water level. Wash the load for ten minutes with a
minimum fill of 20 gallons of soft water (17 ppm hardness or less)
using 27.0 grams + 4.0 grams per pound of cloth load of AHAM
Standard detergent Formula 3. The wash temperature is to be
controlled to 135 [deg]F 5[deg]F (57.2 [deg]C 2.8 [deg]C) and the rinse temperature is to be controlled to
60[deg]F 5[deg]F (15.6 [deg]C 2.8 [deg]C).
Repeat the cycle with detergent and then repeat the cycle three
additional times without detergent, bone drying the load between
cycles (total of five wash and rinse cycles).
2.6.4 Energy test cloth material. The energy test cloths and
energy stuffer cloths shall be made from fabric meeting the
following specifications. The material should come from a roll of
material with a width of approximately 63 inches and approximately
500 yards per roll. However, other sizes may be used if they fall
within the specifications.
2.6.4.1 Nominal fabric type. Pure finished bleached cloth made
with a momie or granite weave, which is nominally 50 percent cotton
and 50 percent polyester.
2.6.4.2 The fabric weight specification shall be 5.60 0.25 ounces per square yard (190.0 8.4 g/m\2\).
2.6.4.3 The thread count shall be 65 x 57 per inch (warp x
fill), 2 percent.
2.6.4.4 The warp yarn and filling yarn shall each have fiber
content of 50 percent 4 percent cotton, with the balance
being polyester, and be open end spun, 15/1 5 percent
cotton count blended yarn.
2.6.4.5 Water repellent finishes, such as fluoropolymer stain
resistant finishes shall not be applied to the test cloth. The
absence of such finishes shall be verified by:
2.6.4.5.1 AATCC Test Method 118-2007, (incorporated by
reference; see Sec. 430.3), for each new lot of test cloth (when
purchased from the mill) to confirm the absence of Scotchguard \TM\
or other water repellent finish (required scores of ``D'' across the
board).
2.6.4.5.2 AATCC Test Method 79-2010, (incorporated by reference;
see Sec. 430.3), for each new lot of test cloth (when purchased
from the mill) to confirm the absence of
[[Page 13942]]
Scotchguard\TM\ or other water repellent finish (time to absorb one
drop should be on the order of 1 second).
2.6.4.6 The moisture absorption and retention shall be evaluated
for each new lot of test cloth by the Standard Extractor Remaining
Moisture Content (RMC) Test specified in section 2.6.5 of this
Appendix.
2.6.4.6.1 Repeat the Standard Extractor RMC Test in section
2.6.5 of this Appendix three times.
2.6.4.6.2 An RMC correction curve shall be calculated as
specified in section 2.6.6 of this Appendix.
2.6.4.7 The maximum shrinkage after preconditioning shall not be
more than 5 percent of the length and width. Measure per AATCC Test
Method 135-2010, (incorporated by reference; see Sec. 430.3).
2.6.5 Standard Extractor RMC Test Procedure. The following
procedure is used to evaluate the moisture absorption and retention
characteristics of a lot of test cloth by measuring the RMC in a
standard extractor at a specified set of conditions. Table 2.6.5 of
this Appendix is the matrix of test conditions. In the table, ``g
Force'' represents units of gravitational acceleration. When this
matrix is repeated 3 times, a total of 60 extractor RMC test runs
are required. For the purpose of the extractor RMC test, the test
cloths may be used for up to 60 test runs (after preconditioning as
specified in section 2.6.3 of this Appendix).
Table 2.6.5--Matrix of extractor RMC test conditions
----------------------------------------------------------------------------------------------------------------
Warm soak Cold soak
``g Force'' -------------------------------------------------------------------
15 min. spin 4 min. spin 15 min. spin 4 min. spin
----------------------------------------------------------------------------------------------------------------
100
200
350
500
650
----------------------------------------------------------------------------------------------------------------
2.6.5.1 The standard extractor RMC tests shall be run in a North
Star Engineered Products Inc. (formerly Bock) Model 215 extractor
(having a basket diameter of 20 inches, height of 11.5 inches, and
volume of 2.09 ft\3\), with a variable speed drive (North Star
Engineered Products, P.O. Box 5127, Toledo, OH 43611) or an
equivalent extractor with same basket design (i.e. diameter, height,
volume, and hole configuration) and variable speed drive. Table
2.6.5.1 shows the extractor spin speed, in revolutions per minute
(RPM), that shall be used to attain each required g-force level.
Table 2.6.5.1--Extractor Spin Speeds for Each Test Condition
------------------------------------------------------------------------
``g Force'' RPM
------------------------------------------------------------------------
100........................................................ 594 1
200........................................................ 840 1
350........................................................ 1111 1
500........................................................ 1328 1
650........................................................ 1514 1
------------------------------------------------------------------------
2.6.5.2 Test Load. Test loads shall be comprised of randomly
selected cloth at the beginning, middle and end of a lot. Test
cloths shall be preconditioned in accordance with section 2.6.3 of
this Appendix. The load size shall be 8.4 lbs. It is acceptable to
use two test loads for standard extractor RMC tests, with each load
used for half of the total number of required tests.
2.6.5.3 Procedure.
2.6.5.3.1 Using a dryer that complies with the temperature
requirements specified in section 2.12 of this Appendix, dry the
test cloth until it is ``bone-dry'' according to the definition in
section 1.5 of this Appendix. Record the ``bone-dry'' weight of the
test load (WI).
2.6.5.3.2 Prepare the test load for soak by grouping four test
cloths into loose bundles. Bundles are created by hanging four
cloths vertically from one corner and loosely wrapping the test
cloth onto itself to form the bundle. Bundles should be wrapped
loosely to ensure consistency of water extraction. Bundles are then
placed into the water to soak. Eight to nine bundles will be formed
depending on the test load. The ninth bundle may not equal four
cloths but can incorporate energy stuffer cloths to help offset the
size difference.
2.6.5.3.3 Soak the test load for 20 minutes in 10 gallons of
soft (<17 ppm) water. The entire test load shall be submerged. The
water temperature shall be 100 [deg]F 5[deg]F (37.8
[deg]C 2.8 [deg]C) at all times between the start and
end of the soak.
2.6.5.3.4 Remove the test load and allow each of the test cloth
bundles to drain over the water bath for a maximum of 5 seconds.
2.6.5.3.5 Manually place the test cloth bundles in the basket of
the extractor, distributing them evenly by eye. The draining and
loading process shall take no longer than 1 minute. Spin the load at
a fixed speed corresponding to the intended centripetal acceleration
level (measured in units of the acceleration of gravity, g) 1g for the intended time period 5 seconds. The
timer shall begin when the extractor meets the required spin speed
for each test.
2.6.5.3.6 Record the weight of the test load immediately after
the completion of the extractor spin cycle (WC).
2.6.5.3.7 Calculate the remaining moisture content of the test
load as (WC-WI)/WI.
2.6.5.3.8 It is not necessary to drain the soak tub if the water
bath is corrected for water level and temperature before the next
extraction.
2.6.5.3.9 It is not necessary to dry the test load in between
extraction runs. However, the bone dry weight shall be checked after
every 12 extraction runs to make sure the bone dry weight is within
tolerance (8.4 0.1 lb).
2.6.5.3.10 The test load must be soaked and extracted once
following bone drying, before continuing with the remaining
extraction runs. This extraction shall be performed at the same spin
speed used for the extraction run prior to bone drying, for a time
period of 4 minutes. Either warm or cold soak temperature may be
used.
2.6.5.3.11 The remaining moisture content of the test load shall
be measured at five g levels: 100 g, 200 g, 350 g, 500 g, and 650 g,
using two different spin times at each g level: 4 minutes and 15
minutes.
2.6.5.4 Repeat section 2.6.5.3 of this Appendix using soft (<17
ppm) water at 60 [deg]F 5 [deg]F (15.6 [deg]C 2.8 [deg]C).
2.6.6 Calculation of RMC correction curve.
2.6.6.1 Average the values of 3 test runs, and fill in Table
2.6.5 of this appendix. Perform a linear least-squares fit to
determine coefficients A and B such that the standard RMC values
shown in Table 2.6.6.1 of this appendix (RMCstandard) are
linearly related to the RMC values measured in section 2.6.5 of this
appendix (RMCcloth):
RMCstandard ~ A * RMCcloth + B
where A and B are coefficients of the linear least-squares fit.
[[Page 13943]]
Table 2.6.6.1--Standard RMC Values (RMC Standard)
----------------------------------------------------------------------------------------------------------------
RMC percentage
---------------------------------------------------
Warm soak Cold soak
``g Force'' ---------------------------------------------------
15 min. 15 min.
spin 4 min. spin spin 4 min. spin
(percent) (percent) (percent) (percent)
----------------------------------------------------------------------------------------------------------------
100......................................................... 45.9 49.9 49.7 52.8
200......................................................... 35.7 40.4 37.9 43.1
350......................................................... 29.6 33.1 30.7 35.8
500......................................................... 24.2 28.7 25.5 30.0
650......................................................... 23.0 26.4 24.1 28.0
----------------------------------------------------------------------------------------------------------------
2.6.6.2 Perform an analysis of variance with replication test
using two factors, spin speed and lot, to check the interaction of
speed and lot. Use the values from Table 2.6.5 and Table 2.6.6.1 of
this Appendix in the calculation. The ``P'' value of the F-statistic
for interaction between spin speed and lot in the variance analysis
shall be greater than or equal to 0.1. If the ``P'' value is less
than 0.1, the test cloth is unacceptable. ``P'' is a theoretically
based measure of interaction based on an analysis of variance.
2.6.7 Application of the RMC correction curve.
2.6.7.1 Using the coefficients A and B calculated in section
2.6.6.1 of this Appendix:
RMCcorr = A x RMC + B
2.6.7.2 Apply this RMC correction curve to measured RMC values
in sections 3.8.2.6, 3.8.3.2, and 3.8.3.4 of this Appendix.
2.7 Test Load Sizes. Maximum, minimum, and, when required,
average test load sizes shall be determined using Table 5.1 of this
Appendix and the clothes container capacity as measured in sections
3.1.1 through 3.1.5 of this Appendix. Test loads shall consist of
energy test cloths, except that adjustments to the test loads to
achieve proper weight can be made by the use of energy stuffer
cloths with no more than 5 stuffer cloths per load.
2.8 Use of Test Loads. Table 2.8 of this Appendix defines the
test load sizes and corresponding water fill settings which are to
be used when measuring water and energy consumptions. Adaptive water
fill control system and manual water fill control system are defined
in section 1 of this Appendix:
Table 2.8--Test Load Sizes and Water Fill Settings Required
----------------------------------------------------------------------------------------------------------------
Manual water fill control system Adaptive water fill control system
----------------------------------------------------------------------------------------------------------------
Test load size Water fill setting Test load size Water fill setting
----------------------------------------------------------------------------------------------------------------
Max.................................. Max.................... Max.................... As determined by the
Clothes Washer.
Min.................................. Min.................... Avg Min................
----------------------------------------------------------------------------------------------------------------
2.8.1 The test load sizes to be used to measure RMC are
specified in section 3.8.1 of this Appendix.
2.8.2 Test loads for energy and water consumption measurements
shall be bone dry prior to the first cycle of the test, and dried to
a maximum of 104 percent of bone dry weight for subsequent testing.
2.8.3 Load the energy test cloths by grasping them in the
center, shaking them to hang loosely and then put them into the
clothes container prior to activating the clothes washer.
2.9 Pre-conditioning of Clothes Washer.
2.9.1 Non-water-heating clothes washer. If the clothes washer
has not been filled with water in the preceding 96 hours, pre-
condition it by running it through a cold rinse cycle and then
draining it to ensure that the hose, pump, and sump are filled with
water.
2.9.2 Water-heating clothes washer. If the clothes washer has
not been filled with water in the preceding 96 hours, or if it has
not been in the test room at the specified ambient conditions for 8
hours, pre-condition it by running it through a cold rinse cycle and
then draining it to ensure that the hose, pump, and sump are filled
with water.
2.10 Wash time setting. If one wash time is prescribed in the
energy test cycle, that shall be the wash time setting; otherwise,
the wash time setting shall be the higher of either the minimum or
70 percent of the maximum wash time available in the energy test
cycle, regardless of the labeling of suggested dial locations. If
the clothes washer is equipped with an electromechanical dial
controlling wash time, reset the dial to the minimum wash time and
then turn it in the direction of increasing wash time to reach the
appropriate setting. If the appropriate setting is passed, return
the dial to the minimum wash time and then turn in the direction of
increasing wash time until the setting is reached.
2.11 Test room temperature. For all clothes washers, maintain
the test room ambient air temperature at 75
5[emsp14][deg]F (23.9 2.8 [deg]C) for active mode
testing and combined low-power mode testing. Do not use the test
room ambient air temperature conditions specified in Section 4,
Paragraph 4.2 of IEC 62301 for combined low-power mode testing.
2.12 Bone dryer temperature. The dryer used for bone drying must
heat the test cloth and energy stuffer cloths above 210 [deg]F (99
[deg]C).
2.13 Energy consumption for the purpose of certifying the cycle
selection(s) to be included in Part (B) of the energy test cycle
definition. Where multiple alternate cycle selections offer a wash/
rinse temperature selection for which a TUF has been developed, and
that is not available on the cycle selection recommended by the
manufacturer for washing cotton or linen clothes described in Part
(A) of the energy test cycle definition, the alternate cycle
selection with the highest energy consumption for that TUF, as
measured according to this section, shall be included in the energy
test cycle.
2.13.1 For the TUF being considered under this section,
establish the testing conditions set forth in section 2 of this test
procedure. Select the applicable cycle selection and temperature
selection. Use the manufacturer default settings for agitation/
tumble operation, soil level, spin speed(s), wash times, rinse
times, and all other wash parameters or optional features applicable
to that cycle selection, including water heating time for water
heating clothes washers.
2.13.2 Use the clothes washer's maximum test load size,
determined from Table 5.1, for testing under this section.
2.13.3 For clothes washers with a manual water fill control
system, user-adjustable adaptive water fill control system, or
adaptive water fill control system with alternate manual water fill
control system, use the water fill selector setting resulting in the
maximum water level available for each cycle selection for testing
under this section.
2.13.4 Each wash cycle tested under this section shall include
the entire active washing mode and exclude any delay start or cycle
finished modes.
[[Page 13944]]
2.13.5 Measure each cycle selection's electrical energy
consumption (EB) and hot water consumption
(HB). Calculate the total energy consumption for each
cycle selection (ETB), as follows:
ETB = EB + (HB x T x K)
Where:
EB is the electrical energy consumption, expressed in
kilowatt-hours per cycle.
HB is the hot water consumption, expressed in gallons per
cycle.
T = temperature rise = 75[emsp14][deg]F (41.7 [deg]C)
K = Water specific heat in kilowatt-hours per gallon per degree F =
0.00240 kWh/gal-[deg]F (0.00114 kWh/L-[deg]C)
3. Test Measurements
3.1 Clothes container capacity. Measure the entire volume which
a clothes load could occupy within the clothes container during
active mode washer operation according to the following procedures:
3.1.1 Place the clothes washer in such a position that the
uppermost edge of the clothes container opening is leveled
horizontally, so that the container will hold the maximum amount of
water. For front-loading clothes washers, the shipping bolts and
door seal shall remain in place during the capacity measurement.
3.1.2 Line the inside of the clothes container with 2 mil (0.051
mm) plastic sheet. All clothes washer components which occupy space
within the clothes container and which are recommended for use with
the energy test cycle shall be in place and shall be lined with 2
mil (0.051 mm) plastic sheet to prevent water from entering any void
space.
3.1.3 Record the total weight of the machine before adding
water.
3.1.4 Fill the clothes container manually with either 60 [deg]F
5 [deg]F (15.6 [deg]C 2.8 [deg]C) or 100
[deg]F 10 [deg]F (37.8 [deg]C 5.5 [deg]C)
water, with the door open. For a top-loading, vertical-axis clothes
washer, fill the clothes container to the uppermost edge of the
rotating portion, including any balance ring. For a front-loading,
horizontal-axis clothes washer, fill the clothes container to the
uppermost edge that is in contact with the door seal. For all
clothes washers, any volume which cannot be occupied by the clothing
load during operation must be excluded from the measurement. Measure
and record the weight of water, W, in pounds.
3.1.5 The clothes container capacity is calculated as follows:
C = W/d
Where:
C = Capacity in cubic feet (liters).
W = Mass of water in pounds (kilograms).
d = Density of water (62.0 lbs/ft\3\ for 100[emsp14][deg]F (993 kg/
m\3\ for 37.8 [deg]C) or 62.3 lbs/ft\3\ for 60[emsp14][deg]F (998
kg/m\3\ for 15.6 [deg]C)).
3.2 Procedure for measuring water and energy consumption values
on all automatic and semi-automatic washers. All energy consumption
tests shall be performed under the energy test cycle(s), unless
otherwise specified. Table 3.2 of this Appendix defines the sections
below which govern tests of particular clothes washers, based on the
number of wash/rinse temperature selections available on the model,
and also, in some instances, method of water heating. The procedures
prescribed are applicable regardless of a clothes washer's washing
capacity, loading port location, primary axis of rotation of the
clothes container, and type of control system.
3.2.1 Inlet water temperature and the wash/rinse temperature
settings.
3.2.1.1 For automatic clothes washers, set the wash/rinse
temperature selection control to obtain the wash water temperature
selection desired (extra hot, hot, warm, or cold) and cold rinse,
and open both the hot and cold water faucets.
3.2.1.2 For semi-automatic washers:
(1) For hot water temperature, open the hot water faucet
completely and close the cold water faucet;
(2) For warm inlet water temperature, open both hot and cold
water faucets completely;
(3) For cold water temperature, close the hot water faucet and
open the cold water faucet completely.
3.2.1.3 Determination of warm wash water temperature(s) to
decide whether a clothes washer has uniformly distributed warm wash
temperature selections. The wash water temperature, Tw, of each warm
water wash selection shall be calculated or measured.
(1) For non-water heating clothes washers, calculate Tw as
follows:
Tw( [deg]F) = ((Hw x 135[emsp14][deg]F)+ (Cw x 60[emsp14][deg]F))/
(Hw + Cw)
or
Tw( [deg]C) = ((Hw x 57.2 [deg]C)+ (Cw x 15.6 [deg]C))/(Hw + Cw)
Where:
Hw = Hot water consumption of a warm wash.
Cw = Cold water consumption of a warm wash.
(2) For water-heating clothes washers, measure and record the
temperature of each warm wash selection after fill.
3.2.2 Total water consumption during the energy test cycle shall
be measured, including hot and cold water consumption during wash,
deep rinse, and spray rinse.
3.2.3 Clothes washers with adaptive water fill/manual water fill
control systems.
3.2.3.1 Clothes washers with adaptive water fill control system
and alternate manual water fill control systems. If a clothes washer
with an adaptive water fill control system allows consumer selection
of manual controls as an alternative, then both manual and adaptive
modes shall be tested and, for each mode, the energy consumption
(HET, MET, and DE) and water
consumption (QT), values shall be calculated as set forth
in section 4 of this Appendix. Then the average of the two values
(one from each mode, adaptive and manual) for each variable shall be
used in section 4 of this Appendix for the clothes washer.
3.2.3.2 Clothes washers with adaptive water fill control system.
3.2.3.2.1 Not user adjustable. The maximum, minimum, and average
water levels as defined in the following sections shall be
interpreted to mean that amount of water fill which is selected by
the control system when the respective test loads are used, as
defined in Table 2.8 of this Appendix. The load usage factors which
shall be used when calculating energy consumption values are defined
in Table 4.1.3 of this Appendix.
3.2.3.2.2 User adjustable. Four tests shall be conducted on
clothes washers with user adjustable adaptive water fill controls
which affect the relative wash water levels. The first test shall be
conducted with the maximum test load and with the adaptive water
fill control system set in the setting that will give the most
energy intensive result. The second test shall be conducted with the
minimum test load and with the adaptive water fill control system
set in the setting that will give the least energy intensive result.
The third test shall be conducted with the average test load and
with the adaptive water fill control system set in the setting that
will give the most energy intensive result for the given test load.
The fourth test shall be conducted with the average test load and
with the adaptive water fill control system set in the setting that
will give the least energy intensive result for the given test load.
The energy and water consumption for the average test load and water
level shall be the average of the third and fourth tests.
3.2.3.3 Clothes washers with manual water fill control system.
In accordance with Table 2.8 of this Appendix, the water fill
selector shall be set to the maximum water level available on the
clothes washer for the maximum test load size and set to the minimum
water level for the minimum test load size. The load usage factors
which shall be used when calculating energy consumption values are
defined in Table 4.1.3 of this Appendix.
TABLE 3.2--Test Section Reference
----------------------------------------------------------------------------------------------------------------
Max. wash temp. available <=135 [deg]F (57.2 [deg]C) >135 [deg]F (57.2
------------------------------------------------------------------------------------------- [deg]C)\**\
---------------------
Number of wash temp. selections 1 2 >2 3 >3
----------------------------------------------------------------------------------------------------------------
Test sections required to be followed.................... ......... ......... ......... 3.3 3.3
......... 3.4 3.4 ......... 3.4
......... ......... 3.5 3.5 3.5
3.6 3.6 3.6 3.6 3.6
[[Page 13945]]
......... ......... * 3.7 * 3.7 * 3.7
3.8 3.8 3.8 3.8 3.8
----------------------------------------------------------------------------------------------------------------
* Only applicable to machines with warm rinse.
** Only applicable to water heating clothes washers on which the maximum wash temperature available exceeds 135
[deg]F (57.2 [deg]C).
3.3 ``Extra Hot Wash'' (Max Wash Temp
135[emsp14][deg]F (57.2 [deg]C)) for water heating
clothes washers only. Water and electrical energy consumption shall
be measured for each water fill level and/or test load size as
specified in sections 3.3.1 through 3.3.3 of this Appendix for the
hottest wash setting available.
3.3.1 Maximum test load and water fill. Hot water consumption
(Hmx), cold water consumption (Cmx), and
electrical energy consumption (Emx) shall be measured for
an extra hot wash/cold rinse energy test cycle, with the controls
set for the maximum water fill level. The maximum test load size is
to be used and shall be determined per Table 5.1 of this Appendix.
3.3.2 Minimum test load and water fill. Hot water consumption
(Hmn), cold water consumption (Cmn), and
electrical energy consumption (Emn) shall be measured for
an extra hot wash/cold rinse energy test cycle, with the controls
set for the minimum water fill level. The minimum test load size is
to be used and shall be determined per Table 5.1 of this Appendix.
3.3.3 Average test load and water fill. For clothes washers with
an adaptive water fill control system, measure the values for hot
water consumption (Hma), cold water consumption
(Cma), and electrical energy consumption (Ema)
for an extra hot wash/cold rinse energy test cycle, with an average
test load size as determined per Table 5.1 of this Appendix.
3.4 ``Hot Wash'' (Max Wash Temp <=135[emsp14][deg]F (57.2
[deg]C)). Water and electrical energy consumption shall be measured
for each water fill level and/or test load size as specified in
sections 3.4.1 through 3.4.3 of this Appendix for a
135[emsp14][deg]F (57.2 [deg]C) wash, if available, or for the
hottest selection less than 135[emsp14][deg]F (57.2 [deg]C).
3.4.1 Maximum test load and water fill. Hot water consumption
(Hhx), cold water consumption (Chx), and
electrical energy consumption (Ehx) shall be measured for
a hot wash/cold rinse energy test cycle, with the controls set for
the maximum water fill level. The maximum test load size is to be
used and shall be determined per Table 5.1 of this Appendix.
3.4.2 Minimum test load and water fill. Hot water consumption
(Hhn), cold water consumption (Chn), and
electrical energy consumption (Ehn) shall be measured for
a hot wash/cold rinse energy test cycle, with the controls set for
the minimum water fill level. The minimum test load size is to be
used and shall be determined per Table 5.1 of this Appendix.
3.4.3 Average test load and water fill. For clothes washers with
an adaptive water fill control system, measure the values for hot
water consumption (Hha), cold water consumption
(Cha), and electrical energy consumption (Eha)
for a hot wash/cold rinse energy test cycle, with an average test
load size as determined per Table 5.1 of this Appendix.
3.5 ``Warm Wash.'' Water and electrical energy consumption shall
be determined for each water fill level and/or test load size as
specified in sections 3.5.1 through 3.5.2.3 of this Appendix for the
applicable warm water wash temperature(s) with a cold rinse.
3.5.1 Clothes washers with uniformly distributed warm wash
temperature selection(s). The reportable values to be used for the
warm water wash setting shall be the arithmetic average of the
measurements for the hot and cold wash selections. This is a
calculation only; no testing is required.
3.5.2 Clothes washers that lack uniformly distributed warm wash
temperature selections. For a clothes washer with fewer than four
discrete warm wash selections, test all warm wash temperature
selections. For a clothes washer that offers four or more warm wash
selections, test at all discrete selections, or test at 25 percent,
50 percent, and 75 percent positions of the temperature selection
device between the hottest hot (<=135[emsp14][deg]F (57.2 [deg]C))
wash and the coldest cold wash. If a selection is not available at
the 25, 50 or 75 percent position, in place of each such unavailable
selection use the next warmer setting. Each reportable value to be
used for the warm water wash setting shall be the arithmetic average
of all tests conducted pursuant to this section.
3.5.2.1 Maximum test load and water fill. Hot water consumption
(Hwx), cold water consumption (Cwx), and
electrical energy consumption (Ewx) shall be measured
with the controls set for the maximum water fill level. The maximum
test load size is to be used and shall be determined per Table 5.1
of this Appendix.
3.5.2.2 Minimum test load and water fill. Hot water consumption
(Hwn), cold water consumption (Cwn), and
electrical energy consumption (Ewn) shall be measured
with the controls set for the minimum water fill level. The minimum
test load size is to be used and shall be determined per Table 5.1
of this Appendix.
3.5.2.3 Average test load and water fill. For clothes washers
with an adaptive water fill control system, measure the values for
hot water consumption (Hwa), cold water consumption
(Cwa), and electrical energy consumption (Ewa)
with an average test load size as determined per Table 5.1 of this
Appendix.
3.6 ``Cold Wash'' (Minimum Wash Temperature Selection). Water
and electrical energy consumption shall be measured for each water
fill level and/or test load size as specified in sections 3.6.1
through 3.6.3 of this Appendix for the coldest wash temperature
selection available. For a clothes washer that offers two or more
wash temperature settings labeled as cold, such as ``Cold'' and
``Tap Cold'', the setting with the minimum wash temperature shall be
considered the cold wash. If any of the other cold wash temperature
settings add hot water to raise the wash temperature above the cold
water supply temperature, as defined in section 2.3 of this
Appendix, those setting(s) shall be considered warm wash setting(s),
as defined in section 1.34 of this Appendix. If none of the cold
wash temperature settings add hot water for any of the water fill
levels or test load sizes required for the energy test cycle, the
wash temperature setting labeled as ``Cold'' shall be considered the
cold wash, and the other wash temperature setting(s) labeled as cold
shall not be required for testing.
3.6.1 Maximum test load and water fill. Hot water consumption
(Hcx), cold water consumption (Ccx), and
electrical energy consumption (Ecx) shall be measured for
a cold wash/cold rinse energy test cycle, with the controls set for
the maximum water fill level. The maximum test load size is to be
used and shall be determined per Table 5.1 of this Appendix.
3.6.2 Minimum test load and water fill. Hot water consumption
(Hcn), cold water consumption (Ccn), and
electrical energy consumption (Ecn) shall be measured for
a cold wash/cold rinse energy test cycle, with the controls set for
the minimum water fill level. The minimum test load size is to be
used and shall be determined per Table 5.1 of this Appendix.
3.6.3 Average test load and water fill. For clothes washers with
an adaptive water fill control system, measure the values for hot
water consumption (Hca), cold water consumption
(Cca), and electrical energy consumption (Eca)
for a cold wash/cold rinse energy test cycle, with an average test
load size as determined per Table 5.1 of this Appendix.
3.7 ``Warm Wash/Warm Rinse.'' Water and electrical energy
consumption shall be determined for each water fill level and/or
test load size as specified in sections 3.7.2.1 through 3.7.2.3 of
this Appendix for the applicable warm wash temperature selection as
described in section 3.7.1 or 3.7.2 of this Appendix and the hottest
available rinse temperature selection.
3.7.1 Clothes washers with uniformly distributed warm wash
temperature selection(s). Test the warm wash/warm rinse cycle at the
wash temperature selection with the temperature selection device at
the 50
[[Page 13946]]
percent position between the hottest hot (<=135 [deg]F (57.2
[deg]C)) wash and the coldest cold wash.
3.7.2 Clothes washers that lack uniformly distributed warm wash
temperature selections. For a clothes washer with fewer than four
discrete warm wash selections, test all warm wash temperature
selections for which a warm rinse is available. For a clothes washer
that offers four or more warm wash selections, test at all discrete
selections for which a warm rinse is available, or test at 25
percent, 50 percent, and 75 percent positions of the temperature
selection device between the hottest hot (<=135 [deg]F (57.2
[deg]C)) wash and the coldest cold wash. If a selection is not
available at the 25, 50, or 75 percent position, in place of each
such unavailable selection use the next warmer setting. Each
reportable value to be used for the warm wash/warm rinse setting
shall be the arithmetic average of all tests conducted pursuant to
this section.
3.7.2.1 Maximum test load and water fill. Hot water consumption
(Hwwx), cold water consumption (Cwwx), and
electrical energy consumption (Ewwx) shall be measured
with the controls set for the maximum water fill level. The maximum
test load size is to be used and shall be determined per Table 5.1
of this Appendix.
3.7.2.2 Minimum test load and water fill. Hot water consumption
(Hwwn), cold water consumption (Cwwn), and
electrical energy consumption (Ewwn) shall be measured
with the controls set for the minimum water fill level. The minimum
test load size is to be used and shall be determined per Table 5.1
of this Appendix.
3.7.2.3 Average test load and water fill. For clothes washers
with an adaptive water fill control system, measure the values for
hot water consumption (Hwwa), cold water consumption
(Cwwa), and electrical energy consumption
(Ewwa) with an average test load size as determined per
Table 5.1 of this Appendix.
3.8 Remaining Moisture Content:
3.8.1 The wash temperature will be the same as the rinse
temperature for all testing. Use the maximum test load as defined in
Table 5.1 of this Appendix for testing.
3.8.2 For clothes washers with cold rinse only:
3.8.2.1 Record the actual ``bone dry'' weight of the test load
(WIx), then place the test load in the clothes washer.
3.8.2.2 Set water level selector to maximum fill.
3.8.2.3 Run the energy test cycle.
3.8.2.4 Record the weight of the test load immediately after
completion of the energy test cycle (WCx).
3.8.2.5 Calculate the remaining moisture content of the maximum
test load, RMCx, defined as:
RMCx = (WCx - WIx)/WIx
3.8.2.6 Apply the RMC correction curve described in section
2.6.7 of this Appendix to calculate the corrected remaining moisture
content, RMCcorr, expressed as a percentage, which shall
be the final RMC used in section 4.3 of this Appendix:
RMCcorr = (A x RMCx + B) x 100%
Where:
A and B are the coefficients of the RMC correction curve as defined
in section 2.6.6.1 of this Appendix.
RMCx = As defined in section 3.8.2.5 of this Appendix.
3.8.3 For clothes washers with cold and warm rinse options:
3.8.3.1 Complete sections 3.8.2.1 through 3.8.2.4 of this
Appendix for cold rinse.
Calculate the remaining moisture content of the maximum test
load for cold rinse, RMCCOLD, defined as:
RMCCOLD = (WCx - WIx)/
WIx
3.8.3.2 Apply the RMC correction curve described in section
2.6.7 of this Appendix to calculate the corrected remaining moisture
content for cold rinse, RMCCOLD,corr, expressed as a
percentage, as follows:
RMCCOLD,corr = (A x RMCCOLD + B) x 100%
Where:
A and B are the coefficients of the RMC correction curve as defined
in section 2.6.6.1 of this Appendix.
RMCCOLD = As defined in section 3.8.3.1 of this Appendix.
3.8.3.3 Complete sections 3.8.2.1 through 3.8.2.4 of this
Appendix for warm rinse. Calculate the remaining moisture content of
the maximum test load for warm rinse, RMCWARM, defined
as:
RMCWARM = (WCx - WIx)/
WIx
3.8.3.4 Apply the RMC correction curve described in section
2.6.7 of this Appendix to calculate the corrected remaining moisture
content for warm rinse, RMCWARM,corr, expressed as a
percentage, as follows:
RMCWARM,corr = (A x RMCWARM + B) x 100%
Where:
A and B are the coefficients of the RMC correction curve as defined
in section 2.6.6.1 of this Appendix.
RMCWARM = As defined in section 3.8.3.3 of this Appendix.
3.8.3.5 Calculate the corrected remaining moisture content of
the maximum test load, RMCcorr, expressed as a
percentage, which shall be the final RMC used in section 4.3 of this
Appendix:
RMCcorr = RMCCOLD,corr x (1 -
TUFww) + RMCWARM,corr x (TUFww)
Where:
RMCCOLD,corr = As defined in section 3.8.3.2 of this
Appendix.
RMCWARM,corr = As defined in section 3.8.3.4 of this
Appendix.
TUFww is the temperature use factor for warm rinse as
defined in Table 4.1.1 of this Appendix.
3.8.4 Clothes washers that have options such as multiple
selections of spin speeds or spin times that result in different RMC
values and that are available in the energy test cycle, shall be
tested at the maximum and minimum extremes of the available options,
excluding any ``no spin'' (zero spin speed) settings, in accordance
with requirements in section 3.8.2 or 3.8.3 of this Appendix, as
applicable. The calculated RMCcorr,max extraction and
RMCcorr,min extraction at the maximum and minimum
settings, respectively, shall be combined as follows and the final
corrected RMC to be used in section 4.3 of this Appendix shall be:
RMCcorr = 0.75 x RMCcorr,max extraction + 0.25
x RMCcorr,min extraction
Where:
RMCcorr,max extraction is the corrected remaining
moisture content using the maximum spin setting, calculated
according to section 3.8.2 or 3.8.3 of this Appendix, as applicable.
RMCcorr,min extraction is the corrected remaining
moisture content using the minimum spin setting, calculated
according to section 3.8.2 or 3.8.3 of this Appendix, as applicable.
3.9 Combined low-power mode power. Connect the clothes washer to
a watt meter as specified in section 2.5.3 of this Appendix.
Establish the testing conditions set forth in sections 2.1, 2.2 and
2.11 of this Appendix. For clothes washers that take some time to
enter a stable state from a higher power state as discussed in
Section 5, Paragraph 5.1, note 1 of IEC 62301 (incorporated by
reference; see Sec. 430.3), allow sufficient time for the clothes
washer to reach the lower power state before proceeding with the
test measurement. Follow the test procedure for the sampling method
specified in Section 5, Paragraph 5.3.2 of IEC 62301 for testing in
each possible mode as described in sections 3.9.1 and 3.9.2 of this
Appendix.
3.9.1 If a clothes washer has an inactive mode as defined in
section 1.15 of this Appendix, measure and record the average
inactive mode power of the clothes washer, Pia, in watts.
3.9.2 If a clothes washer has an off mode as defined in section
1.24 of this Appendix, measure and record its average off mode
power, Po, in watts.
4. Calculation of Derived Results From Test Measurements
4.1 Hot water and machine electrical energy consumption of
clothes washers.
4.1.1 Per-cycle temperature-weighted hot water consumption for
maximum, average, and minimum water fill levels using each
appropriate load size as defined in section 2.8 and Table 5.1 of
this Appendix. Calculate for the cycle under test the per-cycle
temperature-weighted hot water consumption for the maximum water
fill level, Vhx, the average water fill level,
Vha, and the minimum water fill level, Vhn,
expressed in gallons per cycle (or liters per cycle) and defined as:
(a) Vhx = [Hmx x TUFm] +
[Hhx x TUFh] + [Hwx x
TUFw] + [Hwwx x TUFww] +
[Hcx x TUFc]
(b) Vha = [Hma x TUFm] +
[Hha x TUFh] + [Hwa x
TUFw] + [Hwwa x TUFww] +
[Hca x TUFc]
(c) Vhn = [Hmn x TUFm] +
[Hhn x TUFh] + [Hwn x
TUFw] + [Hwwn x TUFww] +
[Hcn x TUFc]
Where:
Hmx, Hma, and Hmn, are reported hot
water consumption values, in gallons per-cycle (or liters per
cycle), at maximum, average, and minimum water fill, respectively,
for the extra hot wash cycle with the appropriate test loads as
defined in section 2.8 of this Appendix.
Hhx, Hha, and Hhn, are reported hot
water consumption values, in gallons per-cycle
[[Page 13947]]
(or liters per cycle), at maximum, average, and minimum water fill,
respectively, for the hot wash cycle with the appropriate test loads
as defined in section 2.8 of this Appendix.
Hwx, Hwa, and Hwn, are reported hot
water consumption values, in gallons per-cycle (or liters per
cycle), at maximum, average, and minimum water fill, respectively,
for the warm wash cycle with the appropriate test loads as defined
in section 2.8 of this Appendix.
Hwwx, Hwwa, and Hwwn, are reported
hot water consumption values, in gallons per-cycle (or liters per
cycle), at maximum, average, and minimum water fill, respectively,
for the warm wash/warm rinse cycle with the appropriate test loads
as defined in section 2.8 of this Appendix.
Hcx, Hca, and Hcn, are reported hot
water consumption values, in gallons per-cycle (or liters per
cycle), at maximum, average, and minimum water fill, respectively,
for the cold wash cycle with the appropriate test loads as defined
in section 2.8 of this Appendix.
TUFm, TUFh, TUFw, TUFww,
and TUFc are temperature use factors for extra hot wash,
hot wash, warm wash, warm wash/warm rinse, and cold wash temperature
selections, respectively, and are as defined in Table 4.1.1 of this
Appendix.
Table 4.1.1--Temperature Use Factors
----------------------------------------------------------------------------------------------------------------
Max wash temp available <=135 [deg]F (57.2 [deg]C) >135 [deg]F (57.2
--------------------------------------------------------------------------------------- [deg]C)
-------------------------
No. wash temp selections Single 2 Temps >2 Temps 3 Temps >3 Temps
----------------------------------------------------------------------------------------------------------------
TUFm (extra hot)............................... ........... ........... ........... 0.14 0.05
TUFh (hot)..................................... ........... 0.63 0.14 ........... 0.09
TUFww (warm/warm).............................. ........... ........... * 0.27 * 0.27 * 0.27
TUFw (warm).................................... ........... ........... ** 0.22/ ** 0.22/ ** 0.22/
0.49 0.49 0.49
TUFc (cold).................................... 1.00 0.37 0.37 0.37 0.37
----------------------------------------------------------------------------------------------------------------
* Only applicable to machines offering a warm/warm cycle. For machines with no warm/warm cycle, TUFww (warm/
warm) should be zero.
** For machines offering a warm/warm cycle, TUFw (warm) should be 0.22. For machines with no warm/warm cycle,
TUFw (warm) should be 0.49.
4.1.2 Total per-cycle hot water energy consumption for all
maximum, average, and minimum water fill levels tested. Calculate
the total per-cycle hot water energy consumption for the maximum
water fill level, HEmax, the minimum water fill level,
HEmin, and the average water fill level,
HEavg, expressed in kilowatt-hours per cycle and defined
as:
(a) HEmax = [Vhx x T x K]=Total energy when a
maximum load is tested.
(b) HEavg = [Vha x Tx K]=Total energy when an
average load is tested.
(c) HEmin = [Vhn x T x K]=Total energy when a
minimum load is tested.
Where:
Vhx, Vha, and Vhn are as defined in
section 4.1.1 of this Appendix.
T = Temperature rise = 75[emsp14][deg]F (41.7 [deg]C).
K = Water specific heat in kilowatt-hours per gallon per degree F =
0.00240 kWh/gal-[deg]F (0.00114 kWh/L-[deg]C).
4.1.3 Total weighted per-cycle hot water energy consumption.
Calculate the total weighted per-cycle hot water energy consumption,
HET, expressed in kilowatt-hours per cycle and defined
as:
HET = [HEmax x Fmax] +
[HEavg x Favg] + HEmin x
Fmin]
Where:
HEmax, HEavg, and HEmin are as
defined in section 4.1.2 of this Appendix.
Fmax, Favg, and Fmin are the load
usage factors for the maximum, average, and minimum test loads based
on the size and type of the control system on the washer being
tested. The values are as shown in Table 4.1.3 of this Appendix.
Table 4.1.3--Load Usage Factors
------------------------------------------------------------------------
Water fill control system Manual Adaptive
------------------------------------------------------------------------
Fmax =........................................ \1\ 0.72 \2\ 0.12
Favg =........................................ ........... \2\ 0.74
Fmin =........................................ \1\ 0.28 \2\ 0.14
------------------------------------------------------------------------
\1\ Reference 3.2.3.3.
\2\ Reference 3.2.3.2.
4.1.4 Total per-cycle hot water energy consumption using gas-
heated or oil-heated water. Calculate for the energy test cycle the
per-cycle hot water consumption, HETG, using gas-heated
or oil-heated water, expressed in Btu per cycle (or megajoules per
cycle) and defined as:
HETG = HET x 1/e x 3412 Btu/kWh or
HETG = HET x 1/e x 3.6 MJ/kWh
Where:
e = Nominal gas or oil water heater efficiency = 0.75.
HET = As defined in section 4.1.3 of this Appendix.
4.1.5 Per-cycle machine electrical energy consumption for all
maximum, average, and minimum test load sizes. Calculate the total
per-cycle machine electrical energy consumption for the maximum
water fill level, MEmax, the average water fill level,
MEavg, and the minimum water fill level,
MEmin, expressed in kilowatt-hours per cycle and defined
as:
(a) MEmax = [Emxx TUFm] +
[Ehx x TUFh] + [Ewxx
TUFw] + [Ewwxx TUFww] +
[Ecxx TUFc]
(b) MEavg = [Ema x TUFm] +
[Ehax TUFh] + [Ewax
TUFw] + [Ewwax TUFww] +
[Ecax TUFc]
(c) MEmin = [Emnx TUFm] +
[Ehnx TUFh] + [Ewnx
TUFw] + [Ewwnx TUFww] +
[Ecnx TUFc]
Where:
Emx, Ema, and Emn, are reported
electrical energy consumption values, in kilowatt-hours per cycle,
at maximum, average, and minimum test loads, respectively, for the
extra hot wash cycle.
Ehx, Eha, and Ehn, are reported
electrical energy consumption values, in kilowatt-hours per cycle,
at maximum, average, and minimum test loads, respectively, for the
hot wash cycle.
Ewx, Ewa, and Ewn, are reported
electrical energy consumption values, in kilowatt-hours per cycle,
at maximum, average, and minimum test loads, respectively, for the
warm wash cycle.
Ewwx, Ewwa, and Ewwn, are reported
electrical energy consumption values, in kilowatt-hours per cycle,
at maximum, average, and minimum test loads, respectively, for the
warm wash/warm rinse cycle.
Ecx, Eca, and Ecn, are reported
electrical energy consumption values, in kilowatt-hours per cycle,
at maximum, average, and minimum test loads, respectively, for the
cold wash cycle.
TUFm, TUFh, TUFw, TUFww,
and TUFc are as defined in Table 4.1.1 of this Appendix.
4.1.6 Total weighted per-cycle machine electrical energy
consumption. Calculate the total weighted per-cycle machine
electrical energy consumption, MET, expressed in
kilowatt-hours per cycle and defined as:
MET = [MEmax x Fmax] +
[MEavgx Favg] + [MEminx
Fmin]
Where:
MEmax, MEavg, and MEmin are as
defined in section 4.1.5 of this Appendix.
Fmax, Favg, and Fmin are as defined
in Table 4.1.3 of this Appendix.
4.1.7 Total per-cycle energy consumption when electrically
heated water is used. Calculate for the energy test cycle the total
per-cycle energy consumption, ETE, using electrically
heated water, expressed in kilowatt-hours per cycle and defined as:
[[Page 13948]]
ETE = HET + MET
Where:
MET = As defined in section 4.1.6 of this Appendix.
HET = As defined in section 4.1.3 of this Appendix.
4.2 Water consumption of clothes washers.
4.2.1 Per-cycle water consumption for extra hot wash. Calculate
the maximum, average, and minimum total water consumption, expressed
in gallons per cycle (or liters per cycle), for the extra hot wash
cycle and defined as:
Qmmax = [Hmx + Cmx]
Qmavg = [Hma + Cma]
Qmmin = [Hmn + Cmn]
Where:
Hmx, Cmx, Hma, Cma,
Hmn, and Cmn are defined in section 3.3 of
this Appendix.
4.2.2 Per-cycle water consumption for hot wash. Calculate the
maximum, average, and minimum total water consumption, expressed in
gallons per cycle (or liters per cycle), for the hot wash cycle and
defined as:
Qhmax = [Hhx + Chx]
Qhavg = [Hha + Cha]
Qhmin = [Hhn + Chn]
Where:
Hhx, Chx, Hha, Cha,
Hhn, and Chn are defined in section 3.4 of
this Appendix.
4.2.3 Per-cycle water consumption for warm wash with cold rinse.
Calculate the maximum, average, and minimum total water consumption,
expressed in gallons per cycle (or liters per cycle), for the warm
wash/cold rinse cycle and defined as:
Qwmax = [Hwx + Cwx]
Qwavg = [Hwa + Cwa]
Qwmin = [Hwn + Cwn]
Where:
Hwx, Cwx, Hwa, Cwa,
Hwn, and Cwn are defined in section 3.5 of
this Appendix.
4.2.4 Per-cycle water consumption for warm wash with warm rinse.
Calculate the maximum, average, and minimum total water consumption,
expressed in gallons per cycle (or liters per cycle), for the warm
wash/warm rinse cycle and defined as:
Qwwmax = [Hwwx + Cwwx]
Qwwavg = [Hwwa + Cwwa]
Qwwmin = [Hwwn + Cwwn]
Where:
Hwwx, Cwwx, Hwwa, Cwwa,
Hwwn, and Cwwn are defined in section 3.7 of
this Appendix.
4.2.5 Per-cycle water consumption for cold wash. Calculate the
maximum, average, and minimum total water consumption, expressed in
gallons per cycle (or liters per cycle), for the cold wash cycle and
defined as:
Qcmax = [Hcx + Ccx]
Qcavg = [Hca + Cca]
Qcmin = [Hcn + Ccn]
Where:
Hcx, Ccx, Hca, Cca,
Hcn, and Ccn are defined in section 3.6 of
this Appendix.
4.2.6 Total weighted per-cycle water consumption for extra hot
wash. Calculate the total weighted per-cycle water consumption for
the extra hot wash cycle, QmT, expressed in gallons per
cycle (or liters per cycle) and defined as:
QmT =[Qmmax x Fmax] +
[Qmavg x Favg] + [Qmmin x
Fmin]
Where:
Qmmax, Qmavg, Qmmin are defined in
section 4.2.1 of this Appendix.
Fmax, Favg, Fmin are defined in
Table 4.1.3 of this Appendix.
4.2.7 Total weighted per-cycle water consumption for hot wash.
Calculate the total weighted per-cycle water consumption for the hot
wash cycle, QhT, expressed in gallons per cycle (or
liters per cycle) and defined as:
QhT = [Qhmax x Fmax] +
[Qhavg x Favg] + [Qhmin x
Fmin]
Where:
Qhmax, Qhavg, Qhmin are defined in
section 4.2.2 of this Appendix.
Fmax, Favg, Fmin are defined in
Table 4.1.3 of this Appendix.
4.2.8 Total weighted per-cycle water consumption for warm wash
with cold rinse. Calculate the total weighted per-cycle water
consumption for the warm wash/cold rinse cycle, QwT,
expressed in gallons per cycle (or liters per cycle) and defined as:
QwT = [Qwmax x Fmax] +
[Qwavg x Favg] + [Qwmin x
Fmin]
Where:
Qwmax, Qwavg, Qwmin are defined in
section 4.2.3 of this Appendix.
Fmax, Favg, Fmin are defined in
Table 4.1.3 of this Appendix.
4.2.9 Total weighted per-cycle water consumption for warm wash
with warm rinse. Calculate the total weighted per-cycle water
consumption for the warm wash/warm rinse cycle, QwwT,
expressed in gallons per cycle (or liters per cycle) and defined as:
QwwT = [Qwwmax x Fmax] +
[Qwwavg x Favg] + [Qwwmin x
Fmin]
Where:
Qwwmax, Qwwavg, Qwwmin are defined
in section 4.2.4 of this Appendix.
Fmax, Favg, Fmin are defined in
Table 4.1.3 of this Appendix.
4.2.10 Total weighted per-cycle water consumption for cold wash.
Calculate the total weighted per-cycle water consumption for the
cold wash cycle, QcT, expressed in gallons per cycle (or
liters per cycle) and defined as:
QcT = [Qcmax x Fmax] +
[Qcavg x Favg] + [Qcmin x
Fmin]
Where:
Qcmax, Qcavg, Qcmin are defined in
section 4.2.5 of this Appendix.
Fmax, Favg, Fmin are defined in
Table 4.1.3 of this Appendix.
4.2.11 Total weighted per-cycle water consumption for all wash
cycles. Calculate the total weighted per-cycle water consumption for
all wash cycles, QT, expressed in gallons per cycle (or
liters per cycle) and defined as:
QT = [QmT x TUFm] + [QhT
x TUFh] + [QwT x TUFw] +
[QwwT x TUFww] + [QcT x
TUFc]
Where:
QmT, QhT, QwT, QwwT, and
QcT are defined in sections 4.2.6 through 4.2.10 of this
Appendix.
TUFm, TUFh, TUFw, TUFww,
and TUFc are defined in Table 4.1.1 of this Appendix.
4.2.12 Water factor. Calculate the water factor, WF, expressed
in gallons per cycle per cubic foot (or liters per cycle per liter),
as:
WF = QcT/C
Where:
QcT = As defined in section 4.2.10 of this Appendix.
C = As defined in section 3.1.5 of this Appendix.
4.2.13 Integrated water factor. Calculate the integrated water
factor, IWF, expressed in gallons per cycle per cubic foot (or liter
per cycle per liter), as:
IWF = QT/C
Where:
QT = As defined in section 4.2.11 of this Appendix.
C = As defined in section 3.1.5 of this Appendix.
4.3 Per-cycle energy consumption for removal of moisture from
test load. Calculate the per-cycle energy required to remove the
remaining moisture of the test load, DE, expressed in
kilowatt-hours per cycle and defined as:
DE = [(Fmax x Maximum test load weight) +
(Favg x Average test load weight) + (Fmin x
Minimum test load weight)]x (RMCcorr-4%) x (DEF) x (DUF)
Where:
Fmax, Favg, and Fmin are as defined
in Table 4.1.3 of this Appendix.
Maximum, average, and minimum test load weights are as defined in
Table 5.1 of this Appendix.
RMCcorr = As defined in section 3.8.2.6, 3.8.3.5, or
3.8.4 of this Appendix.
DEF = Nominal energy required for a clothes dryer to remove moisture
from clothes = 0.5 kWh/lb (1.1 kWh/kg).
DUF = Dryer usage factor, percentage of washer loads dried in a
clothes dryer = 0.91.
4.4 Per-cycle combined low-power mode energy consumption.
Calculate the per-cycle combined low-power mode energy consumption,
ETLP, expressed in kilowatt-hours per cycle and defined
as:
ETLP = [(Pia x Sia) +
(Po x So)] x Kp/295.
Where:
Pia = Washer inactive mode power, in watts, as defined in
section 3.9.1 of this Appendix for clothes washers capable of
operating in inactive mode; otherwise, Pia = 0.
Po = Washer off mode power, in watts, as defined in
section 3.9.2 of this Appendix for clothes washers capable of
operating in off mode; otherwise, Po=0.
Sia = Annual hours in inactive mode as defined as
Soi if no off mode is possible, [Soi/2] if
both inactive mode and off mode are possible, and 0 if no inactive
mode is possible.
So = Annual hours in off mode as defined as
Soi if no inactive mode is possible, [Soi/2]
if both inactive mode and off mode are possible, and 0 if no off
mode is possible.
[[Page 13949]]
Soi = Combined annual hours for off and inactive mode =
8,465.
Kp = Conversion factor of watt-hours to kilowatt-hours =
0.001.
295 = Representative average number of clothes washer cycles in a
year.
4.5 Modified energy factor. Calculate the modified energy
factor, MEF, expressed in cubic feet per kilowatt-hour per cycle (or
liters per kilowatt-hour per cycle) and defined as:
MEF = C/(ETE + DE)
Where:
C = As defined in section 3.1.5 of this Appendix.
ETE = As defined in section 4.1.7 of this Appendix.
DE = As defined in section 4.3 of this Appendix.
4.6 Integrated modified energy factor. Calculate the integrated
modified energy factor, IMEF, expressed in cubic feet per kilowatt-
hour per cycle (or liters per kilowatt-hour per cycle) and defined
as:
IMEF = C/(ETE + DE + ETLP)
Where:
C = As defined in section 3.1.5 of this Appendix.
ETE = As defined in section 4.1.7 of this Appendix.
DE = As defined in section 4.3 of this Appendix.
ETLP = As defined in section 4.4 of this Appendix.
5. Test Loads
Table 5.1--Test Load Sizes
--------------------------------------------------------------------------------------------------------------------------------------------------------
Container volume Minimum load Maximum load Average load
--------------------------------------------------------------------------------------------------------------------------------------------------------
cu. ft. >= < liter >= < lb kg lb kg lb kg
--------------------------------------------------------------------------------------------------------------------------------------------------------
0-0.80..................................... 0-22.7....................... 3.00 1.36 3.00 1.36 3.00 1.36
0.80-0.90.................................. 22.7-25.5.................... 3.00 1.36 3.50 1.59 3.25 1.47
0.90-1.00.................................. 25.5-28.3.................... 3.00 1.36 3.90 1.77 3.45 1.56
1.00-1.10.................................. 28.3-31.1.................... 3.00 1.36 4.30 1.95 3.65 1.66
1.10-1.20.................................. 31.1-34.0.................... 3.00 1.36 4.70 2.13 3.85 1.75
1.20-1.30.................................. 34.0-36.8.................... 3.00 1.36 5.10 2.31 4.05 1.84
1.30-1.40.................................. 36.8-39.6.................... 3.00 1.36 5.50 2.49 4.25 1.93
1.40-1.50.................................. 39.6-42.5.................... 3.00 1.36 5.90 2.68 4.45 2.02
1.50-1.60.................................. 42.5-45.3.................... 3.00 1.36 6.40 2.90 4.70 2.13
1.60-1.70.................................. 45.3-48.1.................... 3.00 1.36 6.80 3.08 4.90 2.22
1.70-1.80.................................. 48.1-51.0.................... 3.00 1.36 7.20 3.27 5.10 2.31
1.80-1.90.................................. 51.0-53.8.................... 3.00 1.36 7.60 3.45 5.30 2.40
1.90-2.00.................................. 53.8-56.6.................... 3.00 1.36 8.00 3.63 5.50 2.49
2.00-2.10.................................. 56.6-59.5.................... 3.00 1.36 8.40 3.81 5.70 2.59
2.10-2.20.................................. 59.5-62.3.................... 3.00 1.36 8.80 3.99 5.90 2.68
2.20-2.30.................................. 62.3-65.1.................... 3.00 1.36 9.20 4.17 6.10 2.77
2.30-2.40.................................. 65.1-68.0.................... 3.00 1.36 9.60 4.35 6.30 2.86
2.40-2.50.................................. 68.0-70.8.................... 3.00 1.36 10.00 4.54 6.50 2.95
2.50-2.60.................................. 70.8-73.6.................... 3.00 1.36 10.50 4.76 6.75 3.06
2.60-2.70.................................. 73.6-76.5.................... 3.00 1.36 10.90 4.94 6.95 3.15
2.70-2.80.................................. 76.5-79.3.................... 3.00 1.36 11.30 5.13 7.15 3.24
2.80-2.90.................................. 79.3-82.1.................... 3.00 1.36 11.70 5.31 7.35 3.33
2.90-3.00.................................. 82.1-85.0.................... 3.00 1.36 12.10 5.49 7.55 3.42
3.00-3.10.................................. 85.0-87.8.................... 3.00 1.36 12.50 5.67 7.75 3.52
3.10-3.20.................................. 87.8-90.6.................... 3.00 1.36 12.90 5.85 7.95 3.61
3.20-3.30.................................. 90.6-93.4.................... 3.00 1.36 13.30 6.03 8.15 3.70
3.30-3.40.................................. 93.4-96.3.................... 3.00 1.36 13.70 6.21 8.35 3.79
3.40-3.50.................................. 96.3-99.1.................... 3.00 1.36 14.10 6.40 8.55 3.88
3.50-3.60.................................. 99.1-101.9................... 3.00 1.36 14.60 6.62 8.80 3.99
3.60-3.70.................................. 101.9-104.8.................. 3.00 1.36 15.00 6.80 9.00 4.08
3.70-3.80.................................. 104.8-107.6.................. 3.00 1.36 15.40 6.99 9.20 4.17
3.80-3.90.................................. 107.6-110.4.................. 3.00 1.36 15.80 7.16 9.40 4.26
3.90-4.00.................................. 110.4-113.3.................. 3.00 1.36 16.20 7.34 9.60 4.35
4.00-4.10.................................. 113.3-116.1.................. 3.00 1.36 16.60 7.53 9.80 4.45
4.10-4.20.................................. 116.1-118.9.................. 3.00 1.36 17.00 7.72 10.00 4.54
4.20-4.30.................................. 118.9-121.8.................. 3.00 1.36 17.40 7.90 10.20 4.63
4.30-4.40.................................. 121.8-124.6.................. 3.00 1.36 17.80 8.09 10.40 4.72
4.40-4.50.................................. 124.6-127.4.................. 3.00 1.36 18.20 8.27 10.60 4.82
4.50-4.60.................................. 127.4-130.3.................. 3.00 1.36 18.70 8.46 10.85 4.91
4.60-4.70.................................. 130.3-133.1.................. 3.00 1.36 19.10 8.65 11.05 5.00
4.70-4.80.................................. 133.1-135.9.................. 3.00 1.36 19.50 8.83 11.25 5.10
4.80-4.90.................................. 135.9-138.8.................. 3.00 1.36 19.90 9.02 11.45 5.19
4.90-5.00.................................. 138.8-141.6.................. 3.00 1.36 20.30 9.20 11.65 5.28
5.00-5.10.................................. 141.6-144.4.................. 3.00 1.36 20.70 9.39 11.85 5.38
5.10-5.20.................................. 144.4-147.2.................. 3.00 1.36 21.10 9.58 12.05 5.47
5.20-5.30.................................. 147.2-150.1.................. 3.00 1.36 21.50 9.76 12.25 5.56
5.30-5.40.................................. 150.1-152.9.................. 3.00 1.36 21.90 9.95 12.45 5.65
5.40-5.50.................................. 152.9-155.7.................. 3.00 1.36 22.30 10.13 12.65 5.75
5.50-5.60.................................. 155.7-158.6.................. 3.00 1.36 22.80 10.32 12.90 5.84
5.60-5.70.................................. 158.6-161.4.................. 3.00 1.36 23.20 10.51 13.10 5.93
5.70-5.80.................................. 161.4-164.2.................. 3.00 1.36 23.60 10.69 13.30 6.03
5.80-5.90.................................. 164.2-167.1.................. 3.00 1.36 24.00 10.88 13.50 6.12
5.90-6.00.................................. 167.1-169.9.................. 3.00 1.36 24.40 11.06 13.70 6.21
--------------------------------------------------------------------------------------------------------------------------------------------------------
Notes: (1) All test load weights are bone dry weights.
(2) Allowable tolerance on the test load weights are 0.10 lbs (0.05 kg).
[[Page 13950]]
6. Waivers and Field Testing
6.1 Waivers and Field Testing for Nonconventional Clothes
Washers. Manufacturers of nonconventional clothes washers, such as
clothes washers with adaptive control systems, must submit a
petition for waiver pursuant to 10 CFR 430.27 to establish an
acceptable test procedure for that clothes washer if the washer
cannot be tested pursuant to the DOE test procedure or the DOE test
procedure yields results that are so unrepresentative of the clothes
washer's true energy consumption characteristics as to provide
materially inaccurate comparative data. In such cases, field testing
may be appropriate for establishing an acceptable test procedure.
The following are guidelines for field testing which may be used by
manufacturers in support of petitions for waiver. These guidelines
are not mandatory and the Department may determine that they do not
apply to a particular model. Depending upon a manufacturer's
approach for conducting field testing, additional data may be
required. Manufacturers are encouraged to communicate with the
Department prior to the commencement of field tests which may be
used to support a petition for waiver. Section 6.3 of this Appendix
provides an example of field testing for a clothes washer with an
adaptive water fill control system. Other features, such as the use
of various spin speed selections, could be the subject of field
tests.
6.2 Nonconventional Wash System Energy Consumption Test. The
field test may consist of a minimum of 10 of the nonconventional
clothes washers (``test clothes washers'') and 10 clothes washers
already being distributed in commerce (``base clothes washers'').
The tests should include a minimum of 50 energy test cycles per
clothes washer. The test clothes washers and base clothes washers
should be identical in construction except for the controls or
systems being tested. Equal numbers of both the test clothes washer
and the base clothes washer should be tested simultaneously in
comparable settings to minimize seasonal or consumer laundering
conditions or variations. The clothes washers should be monitored in
such a way as to accurately record the average total energy and
water consumption per cycle, including water heating energy when
electrically heated water is used, and the energy required to remove
the remaining moisture of the test load. Standby and off mode energy
consumption should be measured according to section 4.4 of this test
procedure. The field test results should be used to determine the
best method to correlate the rating of the test clothes washer to
the rating of the base clothes washer.
6.3 Adaptive water fill control system field test. (1) Section
3.2.3.1 of this Appendix defines the test method for measuring
energy consumption for clothes washers which incorporate both
adaptive and alternate manual water fill control systems. Energy
consumption calculated by the method defined in section 3.2.3.1 of
this Appendix assumes the adaptive cycle will be used 50 percent of
the time. This section can be used to develop field test data in
support of a petition for waiver when it is believed that the
adaptive cycle will be used more than 50 percent of the time. The
field test sample size should be a minimum of 10 test clothes
washers. The test clothes washers should be representative of the
design, construction, and control system that will be placed in
commerce. The duration of field testing in the user's house should
be a minimum of 50 energy test cycles, for each unit. No special
instructions as to cycle selection or product usage should be given
to the field test participants, other than inclusion of the product
literature pack which would be shipped with all units, and
instructions regarding filling out data collection forms, use of
data collection equipment, or basic procedural methods. Prior to the
test clothes washers being installed in the field test locations,
baseline data should be developed for all field test units by
conducting laboratory tests as defined by section 1 through section
5 of this Appendix to determine the energy consumption, water
consumption, and remaining moisture content values. The following
data should be measured and recorded for each wash load during the
test period: Wash cycle selected, the mode of the clothes washer
(adaptive or manual), clothes load dry weight (measured after the
clothes washer and clothes dryer cycles are completed) in pounds,
and type of articles in the clothes load (e.g., cottons, linens,
permanent press). The wash loads used in calculating the in-home
percentage split between adaptive and manual cycle usage should be
only those wash loads which conform to the definition of the energy
test cycle.
Calculate:
T=The total number of energy test cycles run during the field test.
Ta=The total number of adaptive control energy test
cycles.
Tm=The total number of manual control energy test cycles.
The percentage weighting factors:
Pa=(Ta/T) x 100% (the percentage weighting for
adaptive control selection)
Pm=(Tm/T) x 100% (the percentage weighting for
manual control selection)
(2) Energy consumption (HET, MET, and
DE) and water consumption (QT), values
calculated in section 4 of this Appendix for the manual and adaptive
modes, should be combined using Pa and Pm as
the weighting factors.
[FR Doc. 2012-4819 Filed 3-6-12; 8:45 a.m.]
BILLING CODE 6450-01-P