The cartridge pool filter is just about the least expensive form of pool filter there is and also the easiest to maintain. It’s because it was quite unpopular with service guys in the early 80’s. The older cartridge pool filters had dozens of little cartridges and frankly they were a nuisance to clean. Today’s cartridge pool filters generally have 4 or fewer cartridges and boast a total filter area of 300 to 500 square feet, thus requiring cleaning less often. Today’s cartridge pool filters filter more finely because the flow rate per square foot of pool filter material is much less. The slower the water flows through the pool filter media, the better it will filter. Cartridge pool filters remove particulate down to about 20 microns in size.

Click here to learn more about cartridge (modular media) pool filters. Read helpful information about pool filter maintenance and pool filter troubleshooting.

Choosing a new pool filter can be a confusing task and you do not want to make a mistake. We have several online resources designed to help you choose the right filter and properly maintain it in the future. Still not sure which filter is best for you? Email us at for assistance.

Having trouble choosing a pool filter? Check out our pool filter comparison chart. Use our pool filter sizing charts to narrow down your choice.

Showing 1–18 of 294 results

Cartridge Filters

    04 – Jandy® CS250 Filter Replacement Cartridge, 250 sq.ft. (C-8425)

    SKU: UNI-C8425-4218

    In stock

    Original price was: $219.00.Current price is: $208.00.

    12B – Set of 4 Unicel Replacement Cartridges for C3000/3020 filter (C-7477-4) Now (C-7483-4)

    SKU: C3000-SET-SCC

    In stock

    Original price was: $256.00.Current price is: $209.00.

    12B – Unicel Replacement Set of 4 Cartridges for C3025 filter (C-7483-4)

    SKU: C3025-SET-SCC

    In stock

    Original price was: $248.00.Current price is: $209.00.

    Showing 1–18 of 294 results

    WARNING: Some products can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go please visit