Water heater sizing
What size water heater do I need?
3-step calculator • Based on DOE FHR standards
Step 1 of 3 — Your household
1
2
3
How many people in your household?
We'll use your household size and shower count to determine the right capacity.
3 people
18+
What's your hot water usage?
Select how many people shower in the morning peak period.
<span id='whResultLabel'>Storage tank water heater</span>
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<span id='whResultUnit'>Gallons</span>
DOE FHR standard Matched to your home