Construction
Water Heater Recovery Rate Calculator
How fast can your tank water heater reheat? Affects whether you run out of hot water in long showers.
Recovery (GPH)
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- GPM continuous
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- Time to reheat 50 gal
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- First-hour rating
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FAQ
Why electric is slower? +
A 4500W element delivers ~15,000 BTU/hr — gas burners are typically 30-40,000 BTU/hr. Big difference.
First-hour rating? +
Stored capacity + recovery in the first hour. Better metric for shopping than tank size alone.