Ranking Criteria: The most efficient water heaters, ranked by Energy Factor, based on likely annual energy consumption. ENERGY STAR also uses this calculation.
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#1

Stiebel Eltron
Accelera 300

This is an 80-gallon electric heat pump water heater.

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#2

Air Generate, USI Green Energy
Multiple Models

This is a 65-gallon electric heat pump water heater.

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#3

Air Generate, USI Green Energy
Multiple Models

This is a 50-gallon electric heat pump water heater.

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#4

GE
GEH50DNSR, GEH50DXSR

This is a 50-gallon electric heat pump water heater.

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#5

Multiple Brands
Multiple Models

This is a 60-gallon electric heat pump water heater.

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Price It

View prices from Pricegrabber:
As low as $1459.95 from 1 retailers

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#5

Multiple Brands
Multiple Models

This is a 60-gallon electric heat pump water heater.

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#6

Bosch, HTP
Multiple Models

This is a 50-gallon electric heat pump water heater.

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#7

Rheem, Richmond, Ruud
Multiple Models

This is a 40-gallon electric heat pump water heater.

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#7

Rheem, Richmond, Ruud
Multiple Models

This is a 50-gallon electric heat pump water heater.

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Price It

View prices from Pricegrabber:
As low as $1560.00 from 3 retailers

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Category Last Modified: September 15, 2011