4 Signs Your Pool Filter Needs Backwashing

The pressure gauge reads 8-10 PSI above the clean baseline Most pool filters have a normal operating range. If you don’t know yours, note the pressure when the filter is clean, then backwash when it jumps 10 PSI.

Water flow from return jets is noticeably weaker A clogged filter restricts water flow, making the pump work harder than it should.

The pump sounds louder or strained Running against a dirty filter forces the pump to labor, which can cause damage over time.

You haven’t cleaned it recently Nine times out of ten, high pressure means a dirty filter. Check valves, impellers, and the gauge only after ruling out the obvious.