Pool cartridge filter pressure high: clean or replace?

Short answer: Pressure that climbs above your clean starting reading means the cartridge is loading with debris. Many filter makers suggest cleaning when pressure rises about 8 to 10 psi above the clean reading; check your filter's manual. Replace the cartridge when the pleats are torn, flattened or crumbly, the end caps are cracked, or pressure climbs right back up after cleaning.

Safety: Never open a pressurized filter tank. Turn off the pump and open the air relief valve first; follow the warnings on the filter label.

Step by step

1. Note the clean reading. Write down the pressure right after installing or cleaning a cartridge.
2. Shut off and relieve pressure. Turn off the pump, open the air relief valve, and only then open the filter tank.
3. Rinse the cartridge. Hose between the pleats from top to bottom. Follow the maker's advice on cartridge cleaners.
4. Inspect it. Look for torn fabric, flattened pleats and cracked end caps.
5. Reassemble and restart. Check the tank O-ring, close the tank, open the air relief, and restart. Compare the new pressure with the clean reading.

Pool and spa cartridges

• Jandy CL460, CV460, CL340 Filter Cartridges - Replaces Jandy R0554600, Pleatco PJAN115, Unicel C-7468, Filbur FC-0810 | XLS-705 4PACK — $209.43
• Pentair Clean & Clear Plus 360, Replacement Filter Cartridges. Replaces PCC80, C-7476, FC-0675 | XLS-708 4PACK — $203.93
• XLS-7048 4-Pack Replacement Filter Cartridges, Compatible with Hayward SwimClear C2030, Replaces Hayward CX481XRE — $198.42
• XLS-7049 8-Pack Replacement Filter Cartridges, Compatible with Hayward SwimClear C7030 / HCF7030C, Replaces Hayward CX591XRE — $330.50
• XLS-406 1-Pack Replacement Filter Cartridge, Compatible with Coleco F120, Replaces Coleco F-120 — $33.32
• XLS-408 1-Pack Replacement Filter Cartridge, Compatible with Pentair Rainbow Dynamic 50, Replaces Pentair R173434 — $36.63

Common questions

How do I find the right replacement cartridge?

Use the filter model on the tank label or the part number on the cartridge end cap. Our listings name the filters each cartridge is listed for.

Why does my pressure go up right after cleaning?

The cartridge may be clogged deep in the media, or it may be worn out.

Can I clean a cartridge with a pressure washer?

Many makers advise against it because it can damage the fabric. Use a garden hose.

Shop pool and spa filters Hayward cartridge cross-reference

Related categories: Pool & Spa Filter Cartridges. General information only; follow the equipment maker's instructions and local codes. Updated 2026-11-14.