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Hot Water Heater Sizing Calculator
Estimate the required water heater capacity based on demand and temperature rise.
Calculator
Hot Water Demand (GPH)
Incoming Water Temperature (°F)
Target Water Temperature (°F)
Fuel Type
Natural Gas
Natural Gas Tankless
Electric Tank
Electric Tankless
Propane Tank
Propane Tankless
Calculate
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Required Capacity
0 BTU/hr
Enter values above and click calculate.