Advanced Water Heating Specification v8.1 DRAFT

The Advanced Water Heating Specification Version 8.1 DRAFT is open for public comment for 60 days beginning on March 15, 2024. 

If you have any questions and or comments regarding the proposed update, please email with the subject line "AWHS 8.1."

This specification provides guidance to manufacturers and other market actors who are interested in developing products that not only meet ENERGY STAR criteria but are able to provide high levels of consumer satisfaction and energy performance in a range of climates.

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