ErNtRGY star
PARTNER
ENERGY STAR® Program Requirements
for Commercial Dishwashers
Draft 2 Partner Commitments
Commitment
The following are the terms of the ENERGY STAR Partnership Agreement as it pertains to the
manufacturing of ENERGY STAR qualified commercial dishwashers. The ENERGY STAR Partner must
adhere to the following program requirements:
•	comply with current ENERGY STAR Eligibility Criteria, defining the performance criteria that must be
met for use of the ENERGY STAR certification mark on commercial dishwashers and specifying the
testing criteria for commercial dishwashers. EPA may, at its discretion, conduct tests on products
that are referred to as ENERGY STAR qualified. These products may be obtained on the open
market, or voluntarily supplied by Partner at EPA's request;
•	comply with current ENERGY STAR Identity Guidelines, describing how the ENERGY STAR marks
and name may be used. Partner is responsible for adhering to these guidelines and for ensuring that
its authorized representatives, such as advertising agencies, dealers, and distributors, are also in
compliance;
•	qualify at least one ENERGY STAR commercial dishwasher within one year of activating the
commercial dishwashers' portion of the agreement. When Partner qualifies the product, it must meet
the specification (e.g., Tier 1 or 2) in effect at that time;
•	provide clear and consistent labeling of ENERGY STAR qualified commercial dishwashers. The
ENERGY STAR mark must be clearly displayed on the top/front of the product, in product literature
(i.e., user manuals, spec sheets, etc.), on product packaging, and on the manufacturer's Internet site
where information about ENERGY STAR qualified models is displayed;
•	provide to EPA, on an annual basis, an updated list of ENERGY STAR qualifying commercial
dishwasher models. Once the Partner submits its first list of ENERGY STAR qualified commercial
dishwashers, the Partner will be listed as an ENERGY STAR Partner. Partner must provide annual
updates in order to remain on the list of participating product manufacturers;
•	provide to EPA, on an annual basis, unit shipment data or other market indicators to assist in
determining the market penetration of ENERGY STAR. Specifically, Partner must submit the total
number of ENERGY STAR qualified commercial dishwashers shipped (in units by model) or an
equivalent measurement as agreed to in advance by EPA and Partner. Partner is also encouraged
to provide ENERGY STAR qualified unit shipment data segmented by meaningful product
characteristics (e.g., capacity, size, speed, or other as relevant), total unit shipments for each model
in its product line, and percent of total unit shipments that qualify as ENERGY STAR. The data for
each calendar year should be submitted to EPA, preferably in electronic format, no later than the
following March and may be provided directly from the Partner or through a third party. The data will
be used by EPA only for program evaluation purposes and will be closely controlled. If requested
under the Freedom of Information Act (FOIA), EPA will argue that the data is exempt. Any
information used will be masked by EPA so as to protect the confidentiality of the Partner;
•	notify EPA of a change in the designated responsible party or contacts for commercial dishwashers
within 30 days.

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Performance for Special Distinction
In order to receive additional recognition and/or support from EPA for its efforts within the
Partnership, the ENERGY STAR Partner may consider the following voluntary measures and should keep
EPA informed on the progress of these efforts:
•	consider energy efficiency improvements in company facilities and pursue the ENERGY STAR mark
for buildings;
•	purchase ENERGY STAR qualified products. Revise the company purchasing or procurement
specifications to include ENERGY STAR. Provide procurement officials' contact information to EPA
for periodic updates and coordination. Circulate general ENERGY STAR qualified product
information to employees for use when purchasing products for their homes;
•	ensure the power management feature is enabled on all ENERGY STAR qualified monitors in use in
company facilities, particularly upon installation and after service is performed;
•	provide general information about the ENERGY STAR program to employees whose jobs are
relevant to the development, marketing, sales, and service of current ENERGY STAR qualified
product models;
•	feature the ENERGY STAR mark(s) on Partner Web site and in other promotional materials. If
information concerning ENERGY STAR is provided on the Partner Web site as specified by the
ENERGY STAR Web Linking Policy (this document can be found in the Partner Resources section
on the ENERGY STAR Web site at www.enerqvstar.gov). EPA may provide links where appropriate
to the Partner Web site;
•	provide a simple plan to EPA outlining specific measures Partner plans to undertake beyond the
program requirements listed above. By doing so, EPA may be able to coordinate, communicate,
and/or promote Partner's activities, provide an EPA representative, or include news about the event
in the ENERGY STAR newsletter, on the ENERGY STAR Web pages, etc. The plan may be as
simple as providing a list of planned activities or planned milestones that Partner would like EPA to
be aware of. For example, activities may include: (1) increase the availability of ENERGY STAR
labeled products by converting the entire product line within two years to meet ENERGY STAR
guidelines; (2) demonstrate the economic and environmental benefits of energy efficiency through
special in-store displays twice a year; (3) provide information to users (via the Web site and user's
manual) about energy-saving features and operating characteristics of ENERGY STAR qualified
products, and (4) build awareness of the ENERGY STAR Partnership and brand identity by
collaborating with EPA on one print advertorial and one live press event;
•	provide quarterly, written updates to EPA as to the efforts undertaken by Partner to increase
availability of ENERGY STAR qualified products, and to promote awareness of ENERGY STAR and
its message.

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ENERGY STAR® Program Requirements
for Commercial Dishwashers
Draft 2 Eligibility Criteria
Below is the DRAFT 2 product specification for ENERGY STAR qualified commercial dishwashers. A
product must meet all of the identified criteria if it is to earn the ENERGY STAR.
1) Definitions: Below are the definitions of the relevant terms in this document.
A.	Dishwashing Machine: A machine designed to clean and sanitize plates, glasses, cups, bowls,
utensils, and trays by applying sprays of detergent solution (with or without blasting media
granules) and a sanitizing final rinse.
B.	Under Counter Dishwasher: A machine with an overall height of less than 36-inches, in which a
rack of dishes remains stationary within the machine while being subjected to sequential wash
and rinse sprays, and is designed to be installed under food preparation workspaces. Under
counter dishwashers can be either chemical or hot water sanitizing, with an internal booster heater
for the latter.
C.	Stationary Rack. Single Tank. Single Door Type Dishwasher: A machine in which a rack of dishes
remains stationary within the machine while subjected to sequential wash and rinse sprays. This
definition also applies to machines in which the rack revolves on an axis during the wash and
rinse cycles. Subcategories of stationary door type machines include: single and multiple wash
tank, double rack, pot, pan and utensil washers, chemical dump type and hooded wash
compartment. Stationary rack, single tank, single door type dishwashers can be either chemical
or hot water sanitizing, with an internal or external booster heater for the latter.
D.	Single Tank Conveyor Dishwasher: A warewashing machine that employs a conveyor or similar
mechanism to carry dishes through a series of wash and rinse sprays within the machine.
Specifically, a single tank conveyor machine has a tank for wash water followed by a final
sanitizing rinse and does not have a pumped rinse tank. This type of machine may include a pre-
washing section ahead of the washing section and an auxiliary rinse section between the power
rinse and final rinse sections. Single tank conveyor dishwashers can be either chemical or hot
water sanitizing, with an internal or external booster heater for the latter.
E.	Multiple Tank Conveyor Dishwasher: A conveyor type machine that has one or more tanks for
wash water and one or more tanks for pumped rinse water, followed by a final sanitizing rinse.
This type of machine may include a pre-washing section before the washing section and an
auxiliary rinse section between the power rinse and final rinse sections. Multiple tank conveyor
dishwashers can be either chemical or hot water sanitizing, with an internal or external booster
heater for the latter.
F.	Hot Water Sanitizing (High Temp) Machine: A warewashing machine that applies potable hot
water to the surfaces of wares to achieve sanitization.
G.	Chemical Sanitizing (Low Temp) Machine: A warewashing machine that applies potable water and
a chemical sanitizing solution to the surfaces of wares to achieve sanitization.
Note: EPA received several suggestions for clarifying the definitions provided above so that they
provide a better overall representation of the operation, design, and purpose of these machines. Also,
a definition has been added for a multiple tank conveyor dishwasher, based on NSF/ANSI 170-2005.
EPA is including this machine type in the list of products eligible for ENERGY STAR qualification.
Proposed energy and water efficiency requirements for this machine type are provided in Section 3,
below.

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2) Qualifying Products: Commercial dishwashers must meet the definitions provided in Section 1, above,
to be eligible for ENERGY STAR.
Note: Some stakeholders commented that the specification should address other categories of
dishwashers, in particular: multiple tank conveyors; pot, pan and utensil; flight type; and glassware. In
response, EPA conducted additional research on these product types, which included analyzing data
provided in the NSF database. At this time, multiple tank conveyors show the greatest potential for
ENERGY STAR labeling, offering a robust dataset that includes low energy and water using designs.
The levels proposed in Table 1, below, are based on NSF and manufacturer supplied data. At this
time, EPA is not pursuing flight type machines given that these are typically custom designed
machines making it difficult to determine a specification requirement that would apply to all machine
designs. Also, EPA sees this as a small, niche market. Glassware machines are not included
because of the lack of available data in the NSF database. Stakeholders interested in including
glassware washers in the specification are encouraged to provide idle and water usage data to EPA
for consideration. Finally, pot, pan and utensil machines are not specifically identified as a separate
category under this specification due to the realization that these machine types are inherently water
and energy inefficient and also represent a more specialized and smaller, niche market. However, to
encourage further innovation within this category EPA will allow pot, pan, and utensil machines to
qualify as ENERGY STAR if they meet the idle and water consumption requirements for stationary
single tank door type machines provided in Table 1, below.
3) Efficiency Requirements for Qualifying Products: Commercial dishwashers must meet the
requirements provided below in Table 1 to qualify as ENERGY STAR. Machines designed to be
interchangeable in the field from high temp to low temp, and vice versa, must be indicated as
such on their Qualified Product Information (QPI) form and must meet both the high temp and
low temp requirements of Table 1, below, to qualify as ENERGY STAR.
Table 1: Efficiency Requirements for Commercial Dishwashers
Machine Type
High Temp Efficiency
Requirements
Low Temp Efficiency
Requirements

Idle Energy
Rate*
Water
Consumption
Idle Energy
Rate*
Water
Consumption
Under Counter
< 0.9 kW
< 1.0 gal/rack
< 0.5 kW
< 1.70 gal/rack
Stationary Single
Tank Door**
<_1.0 kW
< 0.95 gal/rack
< 0.6 kW
<1.16 gal/rack
Single Tank
Conveyor
< 2.0 kW
< 0.70 gal/rack
< 1.6 kW
< 0.62 gal/rack
Multiple Tank
Conveyor
< 2.0 kW
< 0.54 gal/rack
< 1.6 kW
< 0.54 gal/rack
* Note: Idle energy rate as measured with door closed.
** Note: Includes pot, pan, and utensil machines.
To determine gallons per rack, manufacturers must use the calculations provided below. These
calculations are based on gallons per rack conversions provided in the NSF Products and Service
Listing for commercial dishwashers at www.nsf.org.
GPR =
Conveyor Type
GPH X RL
CSX 60

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GPR =
Door Type
GPH X (WT + RT +DT + LT)
3600
Load Time= 5 seconds for straight through door-type dishwashers.
Load Time= 7 seconds for corner door-type dishwashers.
GPR =
Undercounter Type
GPH X (WT+RT+DT+LT)
3600
Load time= 30 seconds for undercounter dishwashers.
WT= Wash Time in seconds.
RT= Rinse time in seconds.
DT= Dwell time in seconds.
RL= Rack length in feet.
LT= Load time.
CS= Maximum conveyor speed in
feet per minute
GPH= Water use in gallons per hour.
Note: The proposed idle energy rates provided in Table 1 are based on data supplied by
manufacturers over the last several months. EPA appreciates the efforts made by these
manufacturers to contribute to the specification development process. While the dataset is not fully
representative of all products available in the marketplace, it does provide EPA with enough
information to propose levels that seek to initially cap idle energy use while more data can be collected
through the ENERGY STAR qualification process. For this reason, these levels represent a large
percentage of models that were submitted to EPA for consideration. It is also important to note that a
smaller percentage of the models in this idle energy dataset actually meet both idle energy and water
consumption requirements proposed above. EPA may revisit the idle energy rates once a more robust
dataset is available and improvements in technology indicate an opportunity to garner additional direct
energy savings. Coupled with the indirect energy savings that will be realized through reduced water
use, the idle energy rates provided above seek to ensure that both energy and water efficiency are
considered in product design.
One stakeholder commented that the proposed water consumption level for low temp stationary door
type machines was not representative of the top performers within the dump and fill only dataset. EPA
has confirmed through correspondence with manufacturers that approximately 90% of low temp door
type machines use a dump and fill design, while the remaining 10% use a recirculating design.
However, the purpose of this ENERGY STAR specification is to highlight the more energy and water
efficient dishwashers available without eliminating or specifying any one technology. Recognizing the
prevalence of low temp dump and fill designs in the marketplace today, EPA decided to develop a
specification that is inclusive of dump and fill machines even though they are more water intensive by
design. Specifically, EPA is proposing performance levels that allow the most water efficient dump and
fill machines to qualify, as well as the most energy and water efficient recirculating machines. As
manufacturers begin to recognize the benefits of offering and promoting ENERGY STAR qualified
machines, EPA expects that more efforts will be made to design even more efficient low temp
machines across all types of technologies.

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4) Test Criteria: Manufacturers are required to perform tests and self-certify those product models that
meet the ENERGY STAR guidelines. The test results must be reported to EPA using the Commercial
Dishwasher QPI Form. In measuring water consumption and idle energy rate, partner agrees to use
the following test standards:
•	Water Consumption: NSF/ANSI 3-2003 Standard, Commercial Warewashing Equipment.
•	Idle Energy Rate for Hot Water and Chemical Sanitizing Undercounter and Stationary Rack
Single Tank Door-Type Dishwashers: ASTM Standard F1696, Standard Test Method for Energy
Performance of Single-Rack Hot Water Sanitizing, Door-Type Commercial Dishwashing Machines.
•	Idle Energy Rate for Hot Water and Chemical Sanitizing Single and Multiple Tank Rack
Conveyor Dishwashers: ASTM Standard F1920, Standard Test Method for Energy Performance
of Rack Conveyor, Hot Water Sanitizing, Commercial Dishwashing Machines.
Note: Although the titles of the ASTM test procedures listed above specifically call out hot water
sanitizing machines the idle energy rate portion is also applicable, and should be used, for chemical
sanitizing machines, where applicable.
Note: Some stakeholders expressed concern regarding compromised sanitation and cleanability that may
result from reducing the amount of water used in the rinse cycle to meet the ENERGY STAR water
consumption levels proposed in Table 1, above. In response to these concerns, EPA contacted NSF to
discuss the current NSF-3 test procedure. Based on this discussion, EPA found that water consumption
measurements are taken during the soil removal and sanitation tests, which means that the water
consumption data verified and listed by NSF represents the rinse water amount needed to meet applicable
NSF sanitation requirements. To ensure consistency in the results reported for ENERGY STAR qualified
products, EPA must rely on testing within a controlled laboratory setting. Where possible, EPA ensures that
safety and overall product performance is maintained with lower energy and water use. While there may be
issues in the field regarding the continued ability of a machine to provide the appropriate level of sanitation,
cleanliness, and water consumption once installed and operated, it is EPA's hope that manufacturers, end
users, and service providers take the means necessary to maintain and service the equipment such that it
continues to provide superior energy, water, and cleaning performance. However, EPA may consider
providing additional guidance and education via the ENERGY STAR Web site on the importance of
equipment maintenance to ensure continued superior energy, water, and cleaning performance.
Manufacturers are required to use the American Society for Testing and Materials' (ASTM) Standard Test
Methods for the Door Type Dish Machines (F1696) and Conveyor Type Dish Machines (F1920) to test idle
energy performance. Testing performed by several manufacturers over the last few months using the
ASTM standards indicates that they are adequate for purposes of measuring idle energy use.
5) Effective Date: The date that manufacturers may begin to qualify products as ENERGY STAR will be
defined as the effective date of the agreement. The ENERGY STAR Commercial Dishwasher
Specification shall go into effect on October 11, 2007.
Note: EPA would like to launch the ENERGY STAR commercial dishwasher specification at the North
American Food Equipment Manufacturers (NAFEM) Show in October, 2007. Manufacturers are
encouraged to comment on whether this venue would be appropriate, as well as the required length of time
to allow for ENERGY STAR qualified models to be available at the time of the announcement. Based on
the number and complexity of comments received on this Draft 2 document, EPA may propose a
stakeholder meeting at the National Restaurant Association (NRA) Show in May 2007 to discuss and
resolve any outstanding issues.

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6) Future Specification Revisions: ENERGY STAR reserves the right to change the specification should
technological and/or market changes affect its usefulness to consumers, industry, or the environment.
In keeping with current policy, revisions to the specification are arrived at through industry
discussions. In the event of a specification revision, please note that the ENERGY STAR qualification
is not automatically granted for the life of a product model. To qualify with the energy efficiency
criteria of ENERGY STAR, a product model must meet the ENERGY STAR specification in effect on
the date of manufacture.
ASTM Test Standard Review: ENERGY STAR plans to revisit this specification once the revision
processes for ASTM F1696 and ASTM F1920 are complete. These test methods will address energy
consumption in various modes of operation as well as water consumption.

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