3 Reasons to Backwash Your Pool Filter by Pressure, Not Schedule

Backwash only when the pressure gauge reads 8–10 psi above the clean baseline. This ensures you filter efficiently without wasting water or choking the filter.

A fixed schedule leads to either too-frequent backwashing or insufficient cleaning. Peak season can require backwashing every 5–7 days, but the gauge, not the calendar, tells you the right time.

Set your baseline right after a fresh backwash and mark it with a grease pencil or sticker. Wait for the 8–10 psi rise—that is the sweet spot between good filtration and water waste.