Calculator Inputs and Outputs
Inputs
- Pool volume (gal) — example: 15000
- Desired temperature increase (°F) — example: 10
- Heater efficiency (%) — example: 82
- Fuel cost per therm — example: 1.75
Results
- Estimated heating cost
- Fuel energy required (therms)
- Heat delivered to water (Btu)
Formula used
Water heat = gallons × 8.34 lb/gal × °F rise; fuel input divides by heater efficiency.
How to Use the Pool Heating Cost Calculator
Enter the requested values, check the units and assumptions, then select Calculate Pool Heating Cost. The built-in defaults provide a complete working example.
Formula
Water heat = gallons × 8.34 lb/gal × °F rise; fuel input divides by heater efficiency.
Understanding the Results
The primary answer appears first. Supporting outputs show related quantities, conversions, dates, costs, ratios, or intermediate values. Calculations keep additional precision before display rounding.
Accuracy Tips
- Use measured values and consistent units.
- Review assumptions, rates, timing, and efficiency inputs.
- Recalculate after changing any condition.
Important Note
This tool provides an informational estimate. Confirm critical financial, medical, construction, scientific, tax, legal, or safety decisions with an appropriately qualified professional.
Calculation Standards
This tool uses documented formulas and high-precision internal values. Displayed results may be rounded for readability. Review the assumptions and verify important decisions with a qualified professional.
Read our calculation methodology