Pool Heating Time
Calculate how long it takes to heat your pool.
Calculator
gallons
100100000
°F
32105
°F
32105
BTU
50000500000
Time to Heat
0h 0m
This calculation assumes zero heat loss. Use a cover for best results.
Heating Time Variables
Real-world heating time varies based on evaporation rates, wind, and shade.
The Power of Covers
Using a pool cover is the best way to retain heat, acting as a thermal blanket.
Featured Product
Pool Water Test Kit
Professional test kit.
Order from Amazon
Evaporative Heat Loss
Surface evaporation accounts for ~50% of total heat loss.
Convection & Wind
Convection happens when cool air moves across warm water. Windbreaks help.
Thermal Radiation
Pools radiate heat back to the night sky on clear nights.
Heater Sizing Tip
Always aim to "oversize" your heater for efficiency in cold weather.
Go Pro with Mobile
Plan your swimming season with precision. Calculate heating times and energy requirements instantly.
