AHRI Directory of Certified Product Performance

https://www.ahridirectory.org/ahridirectory/pages/home.aspx

ENERGY STAR Certified Water Heaters

http://www.energystar.gov/productfinder/product/certified-water-heaters/

The energy factor (EF) is displayed for each model. For heat pump water heaters the EF is shown as 2.33 (for example) this would be entered as 233 in the Snugg Pro app.

For electric upgrades this site only list high efficiency Heat Pumps - no standard electric storage tanks.

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