4 Signs It’s Time to Replace Your Pool Filter Cartridge

Check the pressure gauge first When the gauge reads 8–10 psi above the clean baseline, replace the cartridge. That’s the most reliable indicator.

Look for physical damage Pull the cartridge out and inspect for frayed edges or holes. If you see daylight through the fabric, it’s done.

Replace every 1–2 years Most cartridges last a season or two. Rinse monthly and deep-clean twice a season to stretch it to two years, but cheap ones may fail in one.

Don’t wait for poor flow Replace before the flow becomes a trickle or the pump strains. It’s cheaper than burning out your pump.