Pool Filters

Compare above-ground pool filters by filter type, size, flow rate, maintenance, water use, pump compatibility, and operating cost.

Compare cartridge, sand, and DE pool filters to understand the key differences in filtration, maintenance, water use, and sizing before choosing a filter.

Learn how cartridge, sand, and DE pool filters work, how to size a filter, understand pressure, clean filter media, and choose the right type.

Learn how long pool filter cartridges typically last, what shortens cartridge life, and the signs that cleaning is no longer enough.

Learn what causes high pool filter pressure, how to compare it with your clean starting pressure, and what to check when pressure suddenly increases.

Learn when to clean a cartridge, sand, or DE pool filter using pressure rise, reduced water flow, debris load, and manufacturer recommendations.

Learn how to size a pool filter using required flow rate, filter type, filtration area, pump performance, and the rest of your circulation system.

Compare cartridge, sand, and DE pool filters for filtration, maintenance, water use, cost, and everyday ownership to determine which type fits your pool.