Pool Heating Time Calculator
Estimate pool heating time and energy cost from water volume, desired temperature rise, heater input, efficiency and an editable heat-loss allowance.
Default project preview
17.3 hours
Thermal energy to water
367 kWh
Heater input energy
518 kWh
Average temperature gain
0.58 °F/hr
Heat-loss allowance
20%
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Water-heating energy is based on pool volume and temperature rise. Input energy accounts for efficiency and heat loss. Heating time = input energy ÷ heater power.
FAQ
Pool Heating Time Calculator questions
Why does a pool cover matter?+
Evaporation is a major source of heat loss. A suitable cover can substantially reduce the input needed during warm-up and maintenance.
Should heater output or input power be entered?+
Enter the energy input represented by the selected efficiency model. For equipment rated by delivered output, use 100% and add only the separate heat-loss allowance.
Does this include ongoing temperature maintenance?+
No. It estimates one warm-up event. Maintenance cost depends on continuing environmental heat losses.