Pool Filter
The filter removes suspended debris and particulates from circulating water before it returns to the pool. Cartridge, sand, and D.E. filters all do this job with different media and different maintenance rhythms.
Most manufacturers estimate this range for a well-maintained pool filter, though the real number depends heavily on usage, water balance, and how consistently it's serviced.
Routine maintenance
- Clean cartridge elements every 4-6 weeks, or backwash sand/D.E. filters once pressure rises 8-10 PSI above the clean, just-backwashed reading
- Recharge D.E. filters with fresh powder after every backwash per the manufacturer's charge amount
- Deep-clean cartridges in a filter-cleaning solution or diluted muriatic acid a few times per season
- Inspect O-rings, gaskets, and the pressure gauge for wear or drift
- Replace sand media roughly every 5-7 years and D.E. grids or cartridge elements once they stop cleaning up after a wash
Common issues
- A rising pressure gauge reading, the standard signal that a filter needs cleaning or backwashing
- Channeling in sand media that lets water bypass the filter bed unfiltered
- Torn cartridge pleats or cracked D.E. grids that let debris pass straight through
- Cloudy water despite normal chemistry — often a filtration problem, not a chemical one
When to replace
The filter housing and tank typically outlast the media inside it. Replace cartridges, D.E. grids, or sand media on the schedule above, and replace the tank or multiport valve itself if it cracks or can no longer hold pressure.
Skimmer logs this pool filter's install date, warranty, and every service visit, so you always know exactly how old it is and what's been done.
See pricing →The pump circulates water from the pool through the filter and back again — the mechanical heart of the filtration system that every other piece of equipment depends on.
An automatic pool cleaner vacuums debris and, on some models, scrubs the pool floor and walls. Robotic cleaners run independently with their own motor and filter, pressure-side cleaners use return-line water pressure, and suction-side cleaners connect to the pump's suction line.
An automation system centralizes control of pumps, heaters, lighting, and sometimes chemical feeders through a control panel or app, and can include ORP/pH controllers that automatically adjust sanitizer and acid dosing.
Not sure what a term means? Check the pool glossary →