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State building energy code for the State of Washington.

Specifications for water heating systems designed to advance higher performing electric and gas heat pump water heaters.

Research project aimed to verify whether homes in the New Jersey HPwES program achieved 30% source energy savings, and if so, what measures were implemented to achieve them.

Free online tool for sizing central heat pump water heater systems.

Specification sheet for residential, commercial, multifamily, and industrial water heaters and heating systems.

Voluntary specification for residential, commercial/multifamily, and industrial water heaters and heating systems.

AHRI-hosted directory of residential products meeting CEE's highest tier

Website with consumer and contractor information about building codes and regulations for solar water heating systems.

2009 edition of code establishing a baseline for the design and installation of fuel gas systems and gas fired appliances through performance requirements.

2009 edition of code establishing minimum regulations for plumbing facilities, including fixtures, water heaters, water supply and distribution, sanitary drainage, storm drainage, etc.

2012 edition of code establishing minimum regulations for plumbing facilities, including fixtures, water heaters, water supply and distribution, sanitary drainage, storm drainage, etc.

2015 edition of code establishing minimum regulations for plumbing facilities, including fixtures, water heaters, water supply and distribution, sanitary drainage, storm drainage, etc.

2018 edition of code establishing minimum regulations for plumbing facilities, including fixtures, water heaters, water supply and distribution, sanitary drainage, storm drainage, etc.

List of commercial heat pump water heater systems that comply with NEEA's Advanced Water Heating Specification.

Standard that applies to storage water heaters, instantaneous water heaters, and circulating water heaters including booster water heaters; the current version of this standard was published in the year 2019 and it is available for purchase along with a digital preview on the ANSI webstore page.