Includes eligibility criteria and partner commitments, which are required in order for your product to qualify for the ENERGY STAR label.
Provided below is a reference to historical DOE test methods for the water heater efficiency metrics Energy Factor, Thermal Efficiency, and Standby Loss.
View documents, data, and correspondence related to the version in development.
Water Heaters Version 4.0 Specification is in development
For information regarding optional connected criteria in upcoming specification:
View the Connected Criteria for ENERGY STAR Products development process.
View documents, data, and correspondence related to this version.
Residential Water Heaters Specification Version 3.0
Water Heaters Program Requirements Version 1.1 (PDF, 63KB)
Final Criteria Analysis (PDF, 88KB)
Historical List: On April 16, 2015, the ENERGY STAR residential water heater specification changed.
Historical List: On July 1, 2013, the ENERGY STAR residential water heater specification changed. View the last list of residential water heaters that were qualified prior to the specification change.
Applying for the ENERGY STAR
If your product meets our criteria, then apply for an ENERGY STAR label.
To qualify a new product, contact an EPA-recognized Certification Body (CB) to have the product's performance certified. A list of EPA-recognized CBs, as well as an overview of EPA's third-party certification procedures, is available at www.energystar.gov/3rdpartycert.
ENERGY STAR and Connected Water Heaters
EPA is evaluating the market benefit of connected water heaters and whether it would be useful to include optional connected criteria in the Residential Water Heaters specification in the near future. Click here to learn more about a stakeholder discussion that EPA hosted in conjunction with the 2018 ACEEE Hot Water Forum.
Fact sheets, retail training materials, and other tools to help communicate the benefits of purchasing products that have earned the ENERGY STAR.