Heater Size Calculator 

Enter the values in the highlighted cells paying attention to the units. For a 5 mph wind add 25%. For a 10 mph wind double the kW required.

Pool Length m 10
Pool Width m 6
Pool A. Depth m 1.4
Pool surface area sq.m 60
Pool surface area sq.ft 645.6
Pool Volume cu.m 84
Pool volume litrs 84000
Pool Volume USGallons 22176
Turnover time hr 6
Flow rate required gpm  
Flow rate required cu.m/h  
Water Temperature Required deg C  
Air temperature around pool deg C  
Temperature difference deg C  
Heater required kW  
Heater required BTU/hr  
Water weight kg  
Water weight Lbs  
Total BTU to heat water required temp  
Heater Capacity selected BTU/hr (=3413xkW)  
Time to heat using selected heater ( hrs )  
Time to heat using Heater required (hrs)  
Pool Length m
Pool Width m
Pool A. Depth m
Pool surface area sq.m
Pool surface area sq.ft
Pool Volume cu.m
Pool volume litrs
Pool Volume USGallons
Turnover time hr
Flow rate required gpm
Flow rate required cu.m/h
Water Temperature Required deg C
Air temperature around pool deg C
Temperature difference deg C
Heater required kW
Heater required BTU/hr
Water weight kg
Water weight Lbs
Total BTU to heat water required temp
Heater Capacity selected BTU/hr (=3413xkW)
Time to heat using selected heater ( hrs )
Time to heat using Heater required (hrs)
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HEATING SIZE CALCULATOR

Determine your pool heating requirements and heater size for your pool

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