Water Heater Size Calculator
Household Details
Sizing Results
Recommended Tank Size
0 Gallons
First Hour Rating (FHR) Demand
0 Gallons
What This Means
Based on your household, you need a tank water heater capable of delivering at least 0 gallons of hot water during your busiest hour. A 0-gallon storage tank is typically recommended to comfortably meet this demand without running out of hot water.
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Understanding Water Heater Sizing
How to Use
- 1.Enter the number of people living in your home.
- 2.Input the number of full bathrooms.
- 3.Select which hot water appliances you use.
- 4.Choose your peak usage pattern (how often multiple fixtures are used at once).
- 5.Toggle between tank or tankless sizing results.
Disclaimer
This calculator provides an estimate based on average usage patterns and standard plumbing fixtures. For a precise sizing calculation considering groundwater temperature and exact fixture flow rates, consult a licensed plumbing professional.
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