Pool Filter Comparisons
Not sure which filter type is right for your pool? These guides put the options side by side so you can decide based on real data, not marketing copy.
Most Popular
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DE Filter vs Sand Filter vs Cartridge Filter
Full side-by-side comparison of all three filter types: filtration quality, cost, maintenance load, and which pool benefits most from each.
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How to Choose a Pool Filter: Sand, Cartridge, or DE?
The buyer decision framework: 5 questions that determine the right filter type, plus a sizing table, cost breakdown, and energy efficiency comparison.
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Hayward vs Pentair Sand Filter
Tank sizes, lateral design, valve options, warranty, and price compared across the two biggest sand filter brands.
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Converting a Sand Filter to Cartridge
What switching really involves, the full cost of the swap, sizing the replacement, and who should stay with sand.
Common Questions
Which pool filter type is best?
It depends on your priorities. DE filters provide the finest filtration (2 to 5 microns) but require the most maintenance. Cartridge filters filter to 10 to 15 microns, need no backwashing, and are lowest-maintenance. Sand filters filter to 20 to 40 microns, are the most common, and are easiest to maintain long-term. See our full comparison guide for the side-by-side breakdown.
Is a DE filter worth the extra maintenance?
For pools where water clarity matters most, such as showpiece pools, pools used by allergy sufferers, or competition pools, yes. DE filters produce noticeably clearer water. For the average residential family pool, a quality cartridge or sand filter maintained correctly produces perfectly clear water at much lower effort.
Can I switch from a sand filter to a cartridge filter?
Yes, but it requires replacing the entire filter tank and head. The pump, plumbing, and timer can usually stay. Switching from sand to cartridge is a common upgrade, particularly for pool owners who want to reduce water waste from backwashing.