Which sand filter is right for my pool?

 

Why Is Filter Size Important?

A filter that’s too small will constantly be overloaded, resulting in cloudy water, algae buildup, and premature wear on your system. On the other hand, a well-sized filter offers better filtration performance, reduces backwash frequency, and extends equipment life.

Recommended Filter Size by Pool Volume

For Above-Ground Pools
Pool Type Pool Size (Liters) Minimum Filter Size
Above-ground 15' Round (21,600 liters) 19"
Above-ground 18' Round (31,200 liters) 19"
Above-ground 21' Round (42,400 liters) 21"
Above-ground 24' Round (55,200 liters) 21"
Above-ground 27' Round (70,000 liters) 24"
Above-ground 30' Round (86,400 liters) 24"

For In-Ground Pools
Pool Type Pool Size (Liters) Minimum Filter Size
In-ground 12' x 24' (32,628 liters) 19"
In-ground 14' x 28' (44,391 liters) 21"
In-ground 16' x 32' (58,003 liters) 24"
In-ground 18' x 36' (73,487 liters) 24"
In-ground 20' x 40' (90,847 liters) 25"

* Figures are for reference only.
* Above-ground pool: estimate based on a depth of 52".
* In-ground pool: estimate based on a depth of 48".