Pool Heater Cost / Heat-Up Calculator
Compare heater runtime and operating cost for a planned heat-up. This is a planning tool, not a contractor load calculation.
Pool Inputs
Heater Inputs
Gas heater
Heat pump
Electric resistance
Heat-up estimate updates automatically
Assumptions
- • Water demand is modeled as 8.34 BTU per gallon per °F.
- • Cover mode applies a fixed 10% reduction in modeled heat loss.
- • Heater performance is based on the ratings you enter.
Limitations
- • This does not size equipment or verify electrical service.
- • Wind, humidity, start temperature, and heater condition can move the real result.
- • Use a contractor for install, venting, gas, or load-calculation decisions.
Formula
Heat needed = pool volume × temperature rise × 8.34. Runtime and operating cost then follow from heater capacity, efficiency or COP, and your energy price.
Educational guidance only. Verify labels, manuals, local code, and site conditions before acting. Stop for electrical, gas, structural, drain, drowning, injury, emergency, or chemical-mixing risk.