Water heater guides — United States
A guide exists only where people were seen asking the question and the registry can answer it with filed figures. One question passes today; the rest — maintenance habits, reliability — are not published here, because no registry records them.
Guides
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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.
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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How the numbers are calculated
The formula, the tariff rule and where published costs disagree.