Cartridge filters for in-ground pools

A filter cartridge typically needs replacing every 1 to 3 years, depending on pool usage, water quality, and filter maintenance. If the pressure rises rapidly, the cartridge remains dirty despite thorough cleaning, or the pleats are damaged, soft, or crushed, it's time for a replacement. A worn cartridge reduces filtration efficiency and can overload the pump.

Consult our comprehensive guide to select the optimal model based on your pool size, water flow rate, and desired filtration capacity.

Both systems filter well, but they do not offer the same compromise.

• THEsand (or glass) filteris the most popular: it's robust, easy to use, and inexpensive to maintain. It filters slightly less finely than a cartridge filter, but is still more than sufficient for a residential pool. Cleaning is done by backwashing, so it's very simple, and the sand/glass only needs changing every 3 to 7 years. It's generally thebest overall compromise: good ratio of clarity / simplicity / annual cost.
  
• THEcartridge filteroffers aimproved filtration fineness(water often more crystalline) and createsless pressure loss(better flow rate, less pump strain). On the other hand, it requires more manual work: frequent rinsing, occasional soaking in a cleaner, and replacement of the cartridges every 1 to 3 years, which slightly increases maintenance costs.
  

For the majority of pool owners who want somethingsimple, reliable and economical, THEsand filter (or sand/glass filter)remains the best compromise. For those looking for aultra-clear waterand accept a little more maintenance and cost, thecartridge filteris an excellent choice.

Still according to the filter model.Pick up thebrand + modelof the filter (label on the tank) or thesupplier codeof the cartridge.

If not, measurelength,outside diameter,inner diameter, and thetype of tips(open/closed, male/female thread).

To install a filter, first position the filter on a stable surface and level the unit. Connect the inlet (INLET) from the pump and the outlet (OUTLET) to the pool according to the manufacturer's diagram. Then open the cover, insert the cartridge(s) into their slots, and securely close the cover using the locking ring. Remember to apply lubricant to the cover seal. Purge the air using the designated valve, then start the pump to check for proper operation and leaks.

For a water filter (swimming pool), the cartridge must be changed when it is clogged, damaged, or when the pressure increases abnormally. Generally, pool cartridges are replaced every 1 to 3 years, or more often depending on usage. An old cartridge reduces filtration efficiency and increases the load on the pump.

To change a filter cartridge, first turn off the pump and release the pressure using the air valve on top of the filter. Then open the cover, remove the old cartridge, and rinse the inside of the housing if necessary. Insert the new cartridge, making sure it is centered and seated firmly in the filter housing. Remember to apply lubricant to the cover gasket. Replace the cover, tighten the clamp, and restart the pump. Check for leaks.