Ranked lists
6 lists rank water heaters by one filed figure — efficiency or sound level — inside each draw pattern, where it compares. A list exists only for a question people ask and only where the figures spread far enough to order.
Lists
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Most efficient 40-gallon electric water heaters
Electric tanks filed at 35 to 45 gallons, ranked by filed UEF inside each draw pattern.
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Most efficient 50-gallon electric water heaters
Electric tanks filed at 45 to 55 gallons, ranked by filed UEF inside each draw pattern.
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Most efficient 80-gallon electric water heaters
Electric tanks filed at 75 to 85 gallons, ranked by filed UEF inside each draw pattern.
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Highest-UEF gas tank water heaters
Gas-fired storage tanks, ranked by filed UEF inside each draw pattern.
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Heat pump water heaters ranked by efficiency
Electric tanks filing a UEF of 2.0 or more, ranked by filed UEF inside each draw pattern.
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Quietest heat pump water heaters, by filed decibels
Heat pump models whose ENERGY STAR filing lists a sound level, quietest first inside each draw pattern.
Related pages
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Find what replaces your water heater
Enter the model number off your old unit and see what is on file today, with the yearly cost difference.
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Find a water heater that fits
Three questions — fuel, hot water need, install space — narrow every model on file to the ones that fit.
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What a water heater costs to run
Prices a unit's efficiency against your own utility's filed tariff for your ZIP code.
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Water heaters
Every model on file with the Department of Energy, by heater type.
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Water heater recalls on file
Every CPSC recall since 2015 and the models on file it names.
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Heat pump water heater rebates by state
Which programs pay today, whether their funding is open, and which models qualify.
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How the numbers are calculated
The formula, the tariff rule and where published costs disagree.
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What is a good first hour rating for a water heater?
The first hour rating every storage model on file actually lists, by tank size, next to the DOE method for checking it against your own household.