Includes eligibility criteria and partner commitments, which are required in order for your product to qualify for the ENERGY STAR label.
ENERGY STAR Version 4.0 Water Heaters Final Specification and Partner Commitments-March2022 (PDF, 585 KB)
ENERGY STAR Version 5.0 Water Heaters Final Specification and Partner Commitments (PDF, 516 KB) (Effective April 18, 2023)
Provided below is the test method used for determining product compliance with requirements for Demand Response (DR) functionality in the Version 4.0 ENERGY STAR Program Requirements for Residential Water Heaters (ENERGY STAR Specification).
ENERGY STAR Connected Residential Water Heaters Test Method to Validate Demand Response Version 1.2 (PDF, 366 KB)
View documents, data, and correspondence related to the version in development.
There are no new versions currently in development.
View documents, data, and correspondence related to this version.
Residential Water Heaters Specification Version 5.0
Residential Water Heaters Specification Version 4.0
Residential Water Heaters Specification Version 3.0
Residential Water Heaters Specification Version 2.0
Residential Water Heaters Specification Version 1.0 (PDF, 83 KB)
Water Heaters Program Requirements Version 1.1 (PDF, 63 KB)
Final Criteria Announcement from Richard Karney, ENERGY STAR Program Manager (PDF, 88 KB)
Final Criteria Analysis (PDF, 71 KB)
Guidelines for New and Existing Water Heater Partners (PDF, 44 KB)
More Resources for Water Heater Partners
Historical List: On January 5, 2022, a new ENERGY STAR residential water heater specification took effect. View the last list of residential water heaters certified to Version 4.0 prior to the specification change (EXCEL, 530 KB).
Historical List: On April 16, 2015, a new ENERGY STAR residential water heater specification took effect. View the last list of residential water heaters certified to Version 2.0 prior to the specification change (EXCEL, 1.0 MB).
Historical List: On July 1, 2013, a new ENERGY STAR residential water heater specification took effect. View the last list of residential water heaters certified to Version 1.1 prior to the specification change (EXCEL, 1.0 MB).
