7 Best Pool Filters (November 2026)

When someone searches for a pool filter, the thing they usually need is not a whole filtration system but the cartridge that goes inside one. Cartridges wear out, clog, and get brittle after a season or two, and the replacement must match the filter housing in size, diameter, and length. That is why part numbers dominate the listings: R173576, 178584, C-7471, PCC105, and a long list of cross-references that all point back to a few original designs. Buying the wrong cartridge is the most common and most avoidable mistake in this category. A short check of the label before checkout saves a return trip and a weekend without a working filter.

This guide is for pool owners replacing worn cartridges in a Pentair Clean and Clear Plus model, a Jandy unit, or an above-ground pool using Intex-style Type A or C cartridges. Every comparison below uses only the part numbers, pack counts, and area figures stated in each product title, in the 2026 shopping season. Compatibility depends on the filter model you own, so confirm the number on your filter’s label against the listing before ordering, and ask a pool professional about water testing and sanitation, which no cartridge can answer on its own. The table below gives a fast match by filter model, and the longer notes cover pack sizes, cross-references, and what each listing leaves for you to confirm.

Quick Picks

Our top picks

Top pickPOOLPURE CCP420 Pool Filter Replaces Pentair Clean

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Also greatCCP420 Pool Filter Replace PCC105

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Also greatSwimara Essential Series for Pentair CCP420 Pool

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Also greatINTEX 29002E Type A Pool Filter Cartridge:

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Also greatU.S. Pool Supply Universal Replacement Filter Cartridges

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Also greatJandy CL460 Pool Filter Cartridge Replacement for

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Also greatCryspool 07077 Pool Filter Cartridges Replace CCP420

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How to Choose

Match the model number before anything else

Look at the label on your filter tank or the old cartridge for the model, such as CCP420 or CV460. Then compare it to the cross-reference numbers in the listing. A cartridge sold for a 420 model will not fit a 520, which is a longer or larger design. Universal cartridges labeled Type A or C refer to a family of above-ground pump sizes, so confirm which letter your pump takes before buying. If the pump label has faded, measure the old cartridge’s length and diameter and compare them to the listing.

Filter area and what it means

Filter area, in square feet, describes how much media surface the cartridge offers. Higher area generally means longer intervals between cleanings and lower pressure rise, but only within the size the housing allows. Titles that state 420 or 115 square feet are pointing to the original model’s rating. Treat the figure as a matching tool, not a quality score, because a cartridge that fits the housing will have the area its design dictates. Two cartridges with the same stated area but different part numbers are not automatically interchangeable, so lean on the model reference first.

Media, pleat quality, and pack size

Cartridges typically use pleated media. Titles mention details such as Dacron paper or weight per square yard, and those are hints at material, not guarantees. Four-packs lower the cost per cartridge and let you rotate a clean spare in while another dries, while two-packs suit smaller above-ground pools. Look for end caps that are bonded firmly, since loose caps are where budget cartridges fail first. Budget packs save money on pleat count and end cap quality, mid-range packs usually tighten both, and premium cartridges stand out through more detailed material descriptions.

Cleaning schedule, replacement timing, and what to ignore

Plan to rinse cartridges regularly and replace them when pleats collapse, fabric tears, or cleaning no longer restores normal pressure. Ignore marketing language about upgraded material unless the listing explains it. Never let children swim without constant adult supervision regardless of equipment, follow local pool-barrier rules, and test the water on a regular schedule, since a filter is one part of a larger system. When in doubt about chemistry, circulation, or startup after winter, a local pool professional can advise better than any product listing.

The 7 Best Options

POOLPURE CCP420 Replacement Cartridges, 4-Pack

This four-pack lists compatibility with Pentair Clean and Clear Plus 420 filters and cross-references R173576, PCC105, 178584, Ultral-A6, and Unicel C-7471. It is a straightforward choice for owners who want multiple cartridges on hand to rotate through the season. Keeping a clean spare ready means a cleaning day never leaves the pool without a filter element while the first one dries.

• Strength: four cartridges let you swap while one dries.
• Strength: long cross-reference list helps confirm a match.
• Trade-off: it fits 420 models only, not larger units.

Skip it if your filter is a 520 or another size. Always verify the number on your filter label first, since close-looking cartridges can differ in length.

Swimara Essential Series CCP420 Cartridges

Swimara states 420 square feet and lists replacement of PCC105, 178584, and R173576, plus a fit for CCP420 number 160301. The title also mentions a media weight of three ounces per square yard, a detail that helps compare against other brands. Buyers who like to read the fine print will find more to compare here than in titles that list only a part number.

• Strength: specific fit number reduces guesswork.
• Strength: media weight is stated in the title.
• Trade-off: pack size is not clear from the visible title, so check the listing.

Skip it if you need a guaranteed pack count before purchase. A buyer who wants to keep a spare handy should also confirm how many cartridges arrive in the box.

Cryspool 07077 Cartridges, 4-Pack

Cryspool is another four-pack aimed at Clean and Clear Plus 420 filters, listing CCP420, R173576, PCC105-PAK4, C-7471, and 178584 as references. It competes directly with the POOLPURE pack, so the choice may come down to availability and price tier. For a mid-range spend, owners often compare end cap bonding and pleat spacing on the listing photos.

• Strength: four-pack with a clear part-number list.
• Strength: mentions the PCC105-PAK4 pack designation.
• Trade-off: nearly identical in function to other CCP420 options.

Skip it if your filter is not a 420 model. Check the listing for any difference in end cap or media details.

POOLPURE CCP520 Replacement Cartridges, 4-Pack

The CCP520 is for the larger Clean and Clear Plus 520, referencing R173578, 178585, PCC130, Ultral-A7, and Unicel C-7472. If your pool uses the bigger model, this is the matching four-pack. Because it shares the same brand as the 420 version, it is easy to confuse the two, so read the model number twice before adding it to a cart.

• Strength: matches the larger 520 housing.
• Strength: four-pack suits a season of rotation.
• Trade-off: it will not fit a 420 filter.

Skip it if you own a 420 and double-check the numbers on your label before ordering.

Jandy CL460 Pool Filter Cartridges, 4-Pack

The Jandy listing references CV460, PJAN115, C-7468, FC-6410, and FC-0810, and gives 115 square feet. The title also mentions an upgraded material, which is worth reading on the listing for specifics. Jandy-style cartridges are often shorter and narrower than the Pentair designs above, so size confirmation matters even more here.

• Strength: tailored to Jandy-style housings.
• Strength: four-pack with stated filter area.
• Trade-off: it only suits Jandy-compatible filters.

Skip it if you own a Pentair or Intex unit.

INTEX 29002E Type A Filter Cartridge, Two-Pack

This two-pack targets Intex filter pumps and lists Type A, easy-to-clean Dacron paper. For small above-ground pools, it covers the standard replacement need without a large pack. Smaller above-ground pools often need cleaning more frequently, so having the second cartridge on hand keeps the routine moving.

• Strength: matches Intex Type A pumps.
• Strength: easy-to-clean media is part of the title.
• Trade-off: a two-pack gives less spare inventory.

Skip it if your pump takes Type C or a different design.

U.S. Pool Supply Universal Cartridges, Type A or C, 4-Pack

This pack states compatibility with above-ground swimming pool pumps that use Type A or C filters. The universal framing helps owners with older or generic pumps, though the exact fit must still be confirmed. It makes the most sense as a fallback when the original brand is hard to find or when the pump label has worn off.

• Strength: covers two cartridge types in one listing.
• Strength: four-pack for rotation.
• Trade-off: universal can mean a confusing selection of sizes.

Skip it if you cannot confirm whether your pump takes Type A or C, and check the listing for sizing. Owners with a recent-model Intex pump may be better served by the brand-specific pack above.

Which One Fits Your Situation

You have a Clean and Clear Plus 420

The POOLPURE, Swimara, and Cryspool options all target it. Pick based on pack size and the fit details you can confirm, since all three claim similar cross-references.

You own a larger 520 unit

The POOLPURE CCP520 four-pack is the matching choice in this group, provided the label on your filter reads 520 or one of the listed cross-reference numbers.

You have an above-ground pool with an Intex pump

The INTEX 29002E Type A pack is the direct fit, while the U.S. Pool Supply pack may help if your pump takes Type C.

You run a Jandy filter

The Jandy CL460 four-pack lists the CV460 reference and a stated 115 square feet, which makes it a clear match for that housing.

Common Mistakes

• Ordering by pool size instead of the filter’s model number.
• Assuming 420 and 520 cartridges are interchangeable.
• Ignoring the Type A versus Type C distinction on above-ground pumps and assuming one letter fits every pump.
• Reusing a collapsed or torn cartridge because rinsing seems to help.
• Leaving the pump running during cartridge swaps without following the manufacturer’s instructions, which risks damage and injury.

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Frequently Asked Questions

How often should cartridges be replaced?

It depends on use and cleaning habits. Replace them when pleats collapse or cleaning no longer restores normal operation, and check the manufacturer’s guidance. Many owners mark the install date on the end cap so they can track how long each cartridge has been in service.

Are generic cartridges the same as the original?

They are designed to match specific housings, but quality can vary. Compare part numbers and materials on the listing, and read the fit notes carefully rather than trusting a brand name alone.

Does a new cartridge settle water quality questions?

A filter is only one part of pool care. Test the water regularly, follow sanitation guidance, and consult a pool professional.

What does filter area indicate?

It shows how much media surface the cartridge has, which helps match it to the original model. It is not a standalone quality score, so use it to confirm a match rather than to rank products.