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2 Get details on specific qualifying models.

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Find product models that have earned the ENERGY STAR and compare features, savings and more to optimize your purchase.

ENERGY STAR Certified
Water Heaters

Visit the  Water Heaters page for usage tips and buying guidelines.
Efficiency and performance for ENERGY STAR certified water heaters may be evaluated using two different methods. The results of testing from these methods are not directly comparable. Solar water heater products have requirements for Solar Energy Factor (SEF), not Uniform Energy Factor (UEF).

show installers ➔

The installers listed below meet the vetting process of utility-sponsored energy-efficient heat pump water heater programs in their area or that of the product brand owner they are affiliated with. The ENERGY STAR Program is not responsible for the quality of services provided and encourages consumers to ensure their installer is properly certified and licensed.
These links will take you to web sites external to the energystar.gov domain.
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Rebate Finder

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ENERGY STAR partners sponsor rebates on certified products. Enter a zip code below to find deals near you!

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717 Records Found

compare 2-4 products
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Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.99
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.99
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.99
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.98
Thermal Efficiency (TE):

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Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.98
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.98
Thermal Efficiency (TE):
Gas Tankless - Propane
Uniform Energy Factor (UEF):
Energy Factor:
0.98
Thermal Efficiency (TE):
Gas Tankless - Propane
Uniform Energy Factor (UEF):
Energy Factor:
0.98
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.97
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.97
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.97
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.97
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.97
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.97
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.97
Thermal Efficiency (TE):
Gas Tankless - Propane
Uniform Energy Factor (UEF):
Energy Factor:
0.97
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.96
Thermal Efficiency (TE):
Gas Tankless - Propane, Natural Gas
Uniform Energy Factor (UEF):
Energy Factor:
0.96
Thermal Efficiency (TE):
Gas Tankless - Propane
Uniform Energy Factor (UEF):
Energy Factor:
0.96
Thermal Efficiency (TE):
Gas Tankless - Propane
Uniform Energy Factor (UEF):
Energy Factor:
0.96
Thermal Efficiency (TE):