A Guide to the Different Types of Pool Filters

Pool filters perform a very important function by eliminating tiny particles that might cause cloudy water. When it comes to pool filters, there are three different types to choose from, all of which have their own unique advantages and disadvantages.

A Guide to the Different Types of Pool Filters

Sand Filters

Sand filters are very efficient and economical, which is why they are the most commonly used among residential pool owners. Sand filters are essentially large containers filled with sand, and can remove particles up to 20 microns. Eventually, these particles will become blocked inside your filter, which is why you must perform frequent backwashing. Even with regular backwashing, the sand will eventually need replacing every five to seven years.

DE Filters

DE or diatomaceous earth filters are similar to sand but use fossilized remains of diatoms that are pulverized into a fine powder. It is one of the most effective filtering materials, capable of eliminating particles as small as 3 microns. Although it is more effective than sand, it is nonetheless more expensive to maintain a DE filter, as more material must be added each time you backwash. You will also need to perform a thorough cleaning of your filter at least once each season.

Cartridge Filters

A cartridge system contains a filter that is similar to the one inside your vacuum cleaner, only larger. This type of filter can remove particles as low as 5 microns. Unlike sand or DE, you do not need to backwash a cartridge filter; however, you will need to remove it from time to time and clean with a garden hose. Since the filter is made from paper, it will also need to be replaced on a regular basis.

Any of these filters will help you enjoy crystal clear water and prevent algae buildup. If you’re not sure which one is right for you, please contact us.