The newest version of the AWHS Version 8.1 succeeds the AWHS Version 8.0 and was made available in July 2024.
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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.
Updated as of 2022
Water heating Water heater electric Water heater Water Specification Advanced Heat Pump AWHS Northern Climate Northern Climate Specification