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EERE » BTO » Building America » Solution Center Home » Dwelling unit DHW equipment meets the following applicable efficiency levels, dependent on fuel type: Gas: 0.90 UEF; Electric: 1.49 UEF.

Dwelling unit DHW equipment meets the following applicable efficiency levels, dependent on fuel type: Gas: 0.90 UEF; Electric: 1.49 UEF.

See the following guides for relevant information.

Heat Pump Water Heaters for Single-Family Homes
Central Heat Pump Water Heaters for Multifamily Buildings
Distributed Heat Pump Water Heaters for Multifamily Buildings
Ground-Source Heat Pumps
Gas-Fired Tankless Water Heaters
Gas-Fired Boilers