How to find the right Pool Filter Cartridges AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Pool Filter Cartridges
- Cross-reference number
- Match the OEM part number, or the Pleatco, Unicel or Filbur cross-reference printed on your old cartridge or in the filter manual. This is the most reliable way to get a cartridge that seats and seals correctly.
- Physical dimensions
- Diameter, length, and the top and bottom opening sizes and styles (open, closed, handle, threaded) must all match the original. Cartridges that look alike but are a fraction off will bypass dirty water or fail to seal.
- Filter area
- Square footage of filter area must equal or exceed the original's rating. Less area means faster pressure rise and shorter intervals between cleanings.
- Pleat count and fabric
- Look for a full pleat count and spunbonded polyester (Reemay-type) fabric with solid end caps and a rigid core. Cheap cartridges cut pleats and use thin fabric, so they collapse or tear sooner.
- Replacement timing
- Replace when cleaning no longer brings pressure back near baseline, or when fabric is torn or end caps are cracked. A worn cartridge passes debris even when the gauge looks normal.
Brands that matter
- Pleatco: Large aftermarket range keyed to OEM cross-references.
- Unicel: Long-established aftermarket cartridge maker with a broad catalog.
- Filbur: Aftermarket cartridges with cross-reference listings.
- Hayward: OEM cartridges for SwimClear and Star-Clear filters.
- Pentair: OEM cartridges for Clean & Clear and other Pentair filters.
- Intex: OEM Type A/C, Type B, Type D and other cartridges for Intex pump units.
What to avoid
- Choosing by appearance or rough size instead of the part or cross-reference number
- Cartridges with noticeably fewer pleats or flimsy end caps
- Pressure-washing at close range, which frays the fabric
- Running the pump without a cartridge installed
Questions
Are Intex Type A and Type C the same?
Yes. Intex lists Type A and Type C as the same cartridge, while Type B is a different, larger size.
Should I keep a spare cartridge?
A spare lets you swap in a clean cartridge while the dirty one soaks and dries, which shortens downtime.