Radiant Floor Design Calculator
Design hydronic radiant floor heating systems including tube length, flow rate, pump head, and boiler sizing.
Inputs
sq ft
BTU/hr
°F
°F
inches
inches
Results
Total Tube Length
1,333 ft
Required Boiler Output
34,500 BTU/hr
Water Flow Rate3 GPM
Pump Head Required141.8 ft
System Water Volume13.6 gallons
How to Use This Calculator
- Enter Floor Area, Heat Loss, and Supply Water Temp.
- Set Return Water Temp, Tube Spacing, and Tube Diameter.
- Review Total Tube Length (ft) and Required Boiler Output (BTU/hr).
- Use Water Flow Rate (GPM) and Pump Head Required (ft) to inform your decision.
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