Sand filters are the right choice for most residential pools.

Yes. Unless your pool is loaded with fine debris (like a nearby tree that drops tiny flowers), a sand filter is simpler and cheaper to maintain. Cartridge filters catch smaller particles, but you pay for it with more frequent cleaning.

Sand filters work by trapping dirt in a bed of sand. When they get dirty, you backwash—which flushes the junk out through a waste line. That takes five minutes and uses no replacement parts. Cartridge filters catch finer stuff, but you have to pull the cartridge out and hose it down (or replace it) every four to six weeks. That’s more work and ongoing cost.

The tradeoff is filtration quality. Sand filters catch particles down to about 20–40 microns. Cartridge filters get down to 10–15 microns. For most backyard pools, that difference doesn’t matter. Your kids aren’t going to notice. If you have heavy pollen or dead algae in fine powder form, a cartridge filter might save you from cloudy water.

If you want set-and-forget, go sand. If you’re obsessive about water clarity and don’t mind cleaning the cartridge, go cartridge. Either way, don’t overthink it.