The ultimate guide to pool filters

Ryan Ajou

Jan 27 2024

When it comes to pool filters, there is a lot to consider. To start with, not all pools require the same type of filter. Depending on your pool size, desired water circulation speed, and other factors, you may need a sand filter system, diatomaceous earth (D.E.) filter system, or cartridge filter system. Sand filters are the most economical and efficient choice for in-ground pools of any size and have minimal maintenance requirements. Diatomaceous earth systems cost more but provide superior filtration for small or large pools. Finally, cartridge filters typically fit in-ground or above-ground spas and hot tubs that don't require high flow rates but still need effective filtering.

When it comes to creating the ideal swimming experience, Priority Pool Service is here to provide you with up-to-date intel on pool filters. Our comprehensive breakdown demystifies all things filter selection, installation, and maintenance - so you can make an informed decision when choosing yours!

Historical evolution of pool filters

The invention of the swimming pool filter dates back to the 1930s when a filter was designed specifically for pools. This filter used sand as its primary filtering material and relied on gravity to force impurities through it. Over time, further modifications were made, such as adding a method of agitating the filter bed to increase its efficacy.

Three primary types of pool filters

Cartridge filters

Cartridge filters are far more energy efficient than the other two types since they don't require a backwash valve – this minimizes the resistance put on the pump, resulting in a lower power consumption rate.

Diatomaceous earth (D.E.) filters

D.E. filter tanks contain "fingers" or grids of crushed fossil remains of diatoms, a hard-shelled algae group with the same properties as sand media.

Sand filters

Sand filters have become somewhat outdated in recent years, as many pool owners have opted to change to cartridge filters.