Which Pool Heater Should I Choose?

Heater Sizing Guide Based on Your Pool Type


Heaters for Above-Ground Pools

Pool Type Pool Size (Liters) Heater Size Models
Above-ground 15' Round (21,600 liters) 200,000 BTU Shop 200,000 BTU heaters
Above-ground 18' Round (31,200 liters) 200,000 BTU Shop 200,000 BTU heaters
Above-ground 21' Round (42,400 liters) 200,000 BTU Shop 200,000 BTU heaters
Above-ground 24' Round (55,200 liters) 250,000 BTU Shop 200,000 to 300,000 BTU heaters
Above-ground 27' Round (70,000 liters) 300,000 BTU Shop 300,000 BTU heaters
Above-ground 30' Round (86,400 liters) 350,000 BTU Shop 330,000 to 400,000 BTU heaters

Heaters for In-Ground Pools

Pool Type Pool Size (Liters) Heater Size Models
In-ground 12' x 24' (32,628 liters) 200,000 BTU Shop 200,000 BTU heaters
In-ground 14' x 28' (44,391 liters) 200,000 BTU Shop 200,000 BTU heaters
In-ground 16' x 32' (58,003 liters) 250,000 BTU Shop 200,000 to 300,000 BTU heaters
In-ground 18' x 36' (73,487 liters) 300,000 BTU Shop 300,000 BTU heaters
In-ground 20' x 40' (90,847 liters) Between 350,000 and 400,000 BTU Shop 350,000 to 400,000 BTU heaters

* Figures provided are for reference only.
* Above-ground pool volumes based on a depth of 52''. In-ground pools based on a depth of 48''.