Commercial Water Heater Sizing Calculator
Size a commercial water heater based on peak demand, temperature rise, and recovery requirements.
Inputs
Results
Recommended Tank Size
140 gal
BTU Required
149,940 BTU/hr
Recommended Heater TypeCommercial Tank (Gas/Electric)
First Hour Rating298 GPH
How to Use This Calculator
- Enter Peak Demand (GPH), Inlet Water Temp (°F), and Outlet Water Temp (°F).
- Set Recovery Time (hrs).
- Review Recommended Tank Size (gal) and BTU Required (BTU/hr).
- Use Recommended Heater Type and First Hour Rating (GPH) to inform your decision.
- Use the chart to visualize the results and explore different scenarios by adjusting inputs.
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