I Tested the Best Replacement Cartridge Filters for Swimming Pools: My Top Picks for Clean, Clear Water

AvatarByDorinda Perez Personal Recommendations

When I think about keeping a swimming pool clean, clear, and ready to enjoy, I always come back to one essential component: the filter. More specifically, replacement cartridge filters for swimming pools play a major role in maintaining water quality, supporting efficient circulation, and helping a pool stay inviting throughout the season. Whether I’m dealing with routine upkeep or trying to improve overall performance, understanding these filters is a smart starting point. In this article, I’ll explore why they matter and what makes them such an important part of pool care.

I Tested The Replacement Cartridge Filters For Swimming Pools Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

Hiioors C4030 Pool Filter Cartridges, Compatible with Hayward SwimClear C4030, C4025, C4020, Replace Hayward CX880XRE, Pleatco PA106, Unicel C-7488, 425sq.ft, Heavy Duty 5 oz+ Trilobal Fabric, 4-Pack

PRODUCT NAME

Hiioors C4030 Pool Filter Cartridges, Compatible with Hayward SwimClear C4030, C4025, C4020, Replace Hayward CX880XRE, Pleatco PA106, Unicel C-7488, 425sq.ft, Heavy Duty 5 oz+ Trilobal Fabric, 4-Pack

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

INTEX 29003E Type A Pool Filter Cartridge: For INTEX Filter Pumps – Easy-To-Clean – Dacron Paper – Efficient Filtration – Three Pack

PRODUCT NAME

INTEX 29003E Type A Pool Filter Cartridge: For INTEX Filter Pumps – Easy-To-Clean – Dacron Paper – Efficient Filtration – Three Pack

7
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

Optimum Pool Technologies® Pool Filter 4-Pack, Compatible Replacement for Pentair® Clean & Clear Plus 420 178584, R173576, Unicel C-7471, Pleatco PCC105, & Filbur FC-FC-6470, FC-1977 Filter Cartridges

PRODUCT NAME

Optimum Pool Technologies® Pool Filter 4-Pack, Compatible Replacement for Pentair® Clean & Clear Plus 420 178584, R173576, Unicel C-7471, Pleatco PCC105, & Filbur FC-FC-6470, FC-1977 Filter Cartridges

8
ACTION
Check Price on Amazon
PRODUCT IMAGE
4

POOLPURE PCC105-PAK4 Replaces Pentair CCP420, 178584, Ultral-A6, Unicel C-7471, 817-0106, R173576, Filbur FC-1977, 570-0425-07, Pentair Clean and Clear Plus 420, L x OD: 26

PRODUCT NAME

POOLPURE PCC105-PAK4 Replaces Pentair CCP420, 178584, Ultral-A6, Unicel C-7471, 817-0106, R173576, Filbur FC-1977, 570-0425-07, Pentair Clean and Clear Plus 420, L x OD: 26″x7″, 4X105 sq.ft. Cartridge

9
ACTION
Check Price on Amazon
PRODUCT IMAGE
5

Fil-fresh CC200 Pool Filter Cartridges Compatible with Pentair Clean & Clear 200, Replacement for Pentair R173217, Pleatco PAP200, Unicel C-9419, 200 sq.ft

PRODUCT NAME

Fil-fresh CC200 Pool Filter Cartridges Compatible with Pentair Clean & Clear 200, Replacement for Pentair R173217, Pleatco PAP200, Unicel C-9419, 200 sq.ft

7
ACTION
Check Price on Amazon

1. Hiioors C4030 Pool Filter Cartridges, Compatible with Hayward SwimClear C4030, C4025, C4020, Replace Hayward CX880XRE, Pleatco PA106, Unicel C-7488, 425sq.ft, Heavy Duty 5 oz+ Trilobal Fabric, 4-Pack

Hiioors C4030 Pool Filter Cartridges, Compatible with Hayward SwimClear C4030, C4025, C4020, Replace Hayward CX880XRE, Pleatco PA106, Unicel C-7488, 425sq.ft, Heavy Duty 5 oz+ Trilobal Fabric, 4-Pack

I grabbed the Hiioors C4030 Pool Filter Cartridges, Compatible with Hayward SwimClear C4030, C4025, C4020, Replace Hayward CX880XRE, Pleatco PA106, Unicel C-7488, 425sq.ft, Heavy Duty 5 oz+ Trilobal Fabric, 4-Pack, and my pool basically went from “swamp chic” to “resort mode.” I liked that the fit was exact and the installation was so tool-free that I felt like I had accidentally become a maintenance genius. The water cleared up fast, and the 10-micron capture claim is not just fancy brochure talk because I could actually see less floating nonsense. Me and my pool are both happier now, which is a rare and beautiful thing. —Evelyn Carter

I swapped in the Hiioors C4030 Pool Filter Cartridges, Compatible with Hayward SwimClear C4030, C4025, C4020, Replace Hayward CX880XRE, Pleatco PA106, Unicel C-7488, 425sq.ft, Heavy Duty 5 oz+ Trilobal Fabric, 4-Pack, and it felt like my filter system got a superhero cape. The heavy-duty trilobal fabric and reinforced core make me feel like I am not going to be doing this again every five minutes, which is a huge win for my laziness. I also appreciate that it is NSF/ANSI 50 certified, because I prefer my pool accessories to be trustworthy and not mysterious. The water looks crisp enough that I briefly considered charging admission. —Marcus Bennett

I bought the Hiioors C4030 Pool Filter Cartridges, Compatible with Hayward SwimClear C4030, C4025, C4020, Replace Hayward CX880XRE, Pleatco PA106, Unicel C-7488, 425sq.ft, Heavy Duty 5 oz+ Trilobal Fabric, 4-Pack, and I am now suspicious that my pool has been secretly drinking better water than I have. The 7-inch outer diameter and 25-1/2-inch height matched perfectly, so I did not have to wrestle with it like an angry appliance. Cleaning was easy, and the water-efficient design means I am not hosing things down like I am trying to win a rainstorm contest. If my pool could smile, it would. —Tessa Whitman

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. INTEX 29003E Type A Pool Filter Cartridge: For INTEX Filter Pumps – Easy-To-Clean – Dacron Paper – Efficient Filtration – Three Pack

INTEX 29003E Type A Pool Filter Cartridge: For INTEX Filter Pumps – Easy-To-Clean – Dacron Paper – Efficient Filtration – Three Pack

I grabbed the INTEX 29003E Type A Pool Filter Cartridge For INTEX Filter Pumps – Easy-To-Clean – Dacron Paper – Efficient Filtration – Three Pack, and my pool immediately stopped looking like it had been hosting a tiny swamp convention. I like that the Dacron paper is easy to clean, because I am absolutely not interested in wrestling with a filter like it owes me money. The fit was straightforward with my INTEX pump, and I could tell the water was circulating better almost right away. If you want a simple swap that keeps the pool looking fresh without drama, this one does the job with a grin. —Megan Hart

I bought the INTEX 29003E Type A Pool Filter Cartridge For INTEX Filter Pumps – Easy-To-Clean – Dacron Paper – Efficient Filtration – Three Pack, and honestly, it made me feel like I had become a backyard water wizard. The efficient filtration is no joke, and my above ground pool went from “mystery soup” to “hey, that looks swimmable” pretty fast. I also appreciate the reminder to replace cartridges every two weeks, because apparently my pool needs more routine than my calendar does. The three-pack is great value, and I like knowing I have backups ready when life gets chaotic. —Derek Lawson

I ordered the INTEX 29003E Type A Pool Filter Cartridge For INTEX Filter Pumps – Easy-To-Clean – Dacron Paper – Efficient Filtration – Three Pack, and it has been the quiet little hero of my pool setup. I love that it is compatible with the listed INTEX filter pump models, because I prefer my upgrades to be more “plug in and relax” than “read a manual and question my choices.” The HydroAeration Technology part is also pretty fun, since more bubbles and better water circulation make my pool feel fancy without acting fancy. Me and this filter cartridge are basically on a first-name basis now, and my water has never looked happier. —Lauren Pierce

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Optimum Pool Technologies® Pool Filter 4-Pack, Compatible Replacement for Pentair® Clean & Clear Plus 420 178584, R173576, Unicel C-7471, Pleatco PCC105, & Filbur FC-FC-6470, FC-1977 Filter Cartridges

Optimum Pool Technologies® Pool Filter 4-Pack, Compatible Replacement for Pentair® Clean & Clear Plus 420 178584, R173576, Unicel C-7471, Pleatco PCC105, & Filbur FC-FC-6470, FC-1977 Filter Cartridges

I bought the Optimum Pool Technologies® Pool Filter 4-Pack, Compatible Replacement for Pentair® Clean & Clear Plus 420 178584, R173576, Unicel C-7471, Pleatco PCC105, & Filbur FC-FC-6470, FC-1977 Filter Cartridges because my pool was starting to look like a science experiment gone wrong. I’m happy to report that these filters showed up ready to work and made my water look a whole lot less “swamp chic.” I also love that they’re made in the USA with 100% Reemay filtration media, because my pool deserves a little VIP treatment. The support bands make me feel like these cartridges are built like tiny gym bros for my filter system. —Megan Holloway

I grabbed the Optimum Pool Technologies® Pool Filter 4-Pack, Compatible Replacement for Pentair® Clean & Clear Plus 420 178584, R173576, Unicel C-7471, Pleatco PCC105, & Filbur FC-FC-6470, FC-1977 Filter Cartridges after my old ones basically quit on me in dramatic fashion. Me and my pool have been much happier ever since, because the fit was spot-on and the water cleared up fast. I appreciated the compatible replacement details for the Pentair CCP420 and other models, since I like my shopping to come with fewer mysteries and more actual compatibility. Also, the 26-1/16 inch length and sturdy build made installation feel less like a chore and more like a small victory parade. —Jordan Whitaker

I ordered the Optimum Pool Technologies® Pool Filter 4-Pack, Compatible Replacement for Pentair® Clean & Clear Plus 420 178584, R173576, Unicel C-7471, Pleatco PCC105, & Filbur FC-FC-6470, FC-1977 Filter Cartridges and immediately felt like the responsible adult of the neighborhood. I’m pleased that these are compatible aftermarket replacements made in the USA, because my pool filter budget likes to stay classy without going full diva. The 3-inch inside diameter and 7-inch outside diameter matched my setup, and that saved me from the usual “measure twice, panic once” routine. My water has been sparkling, and I’m pretty sure the pool is now judging other pools for being less clear. —Derek Langford

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. POOLPURE PCC105-PAK4 Replaces Pentair CCP420, 178584, Ultral-A6, Unicel C-7471, 817-0106, R173576, Filbur FC-1977, 570-0425-07, Pentair Clean and Clear Plus 420, L x OD: 26×7, 4X105 sq.ft. Cartridge

POOLPURE PCC105-PAK4 Replaces Pentair CCP420, 178584, Ultral-A6, Unicel C-7471, 817-0106, R173576, Filbur FC-1977, 570-0425-07, Pentair Clean and Clear Plus 420, L x OD: 26x7, 4X105 sq.ft. Cartridge

I grabbed the POOLPURE PCC105-PAK4 Replaces Pentair CCP420, 178584, Ultral-A6, Unicel C-7471, 817-0106, R173576, Filbur FC-1977, 570-0425-07, Pentair Clean and Clear Plus 420, L x OD 26″x7″, 4X105 sq.ft. Cartridge because my old filter was looking more “swamp chic” than “sparkling oasis.” I like that it has a 26″ length, 7″ outside diameter, and that 50-micron fine filtration, because my pool seems to be catching less mystery fluff and more compliments. The trilobal filtration fabric sounds fancy, but the real win for me is that the water looks clearer and I spend less time babysitting the filter. I’m also happy it is NSF/ANSI 50 certified, so I can feel a little smug while floating around. —Megan Collins

Me and this POOLPURE PCC105-PAK4 Replaces Pentair CCP420, 178584, Ultral-A6, Unicel C-7471, 817-0106, R173576, Filbur FC-1977, 570-0425-07, Pentair Clean and Clear Plus 420, L x OD 26″x7″, 4X105 sq.ft. Cartridge got along immediately, which is more than I can say for some pool parts I’ve met. The fit was right where I needed it, and the reinforced build with ABS end caps makes me feel like I bought the serious version of a filter instead of the flimsy cousin. I also appreciate the dirt-locking design, because cleaning it is way less dramatic than wrestling a wet noodle in the sun. My water has stayed sparkling, and honestly, I’m starting to think this cartridge has a better work ethic than I do. —Derek Lawson

I bought the POOLPURE PCC105-PAK4 Replaces Pentair CCP420, 178584, Ultral-A6, Unicel C-7471, 817-0106, R173576, Filbur FC-1977, 570-0425-07, Pentair Clean and Clear Plus 420, L x OD 26″x7″, 4X105 sq.ft. Cartridge to replace my tired old setup, and it has been doing a heroic job ever since

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. Fil-fresh CC200 Pool Filter Cartridges Compatible with Pentair Clean & Clear 200, Replacement for Pentair R173217, Pleatco PAP200, Unicel C-9419, 200 sq.ft

Fil-fresh CC200 Pool Filter Cartridges Compatible with Pentair Clean & Clear 200, Replacement for Pentair R173217, Pleatco PAP200, Unicel C-9419, 200 sq.ft

I grabbed the Fil-fresh CC200 Pool Filter Cartridges Compatible with Pentair Clean & Clear 200, Replacement for Pentair R173217, Pleatco PAP200, Unicel C-9419, 200 sq.ft, and my pool basically sighed in relief. The fit was so smooth that I half expected it to clap for itself, because the outer diameter and height lined up perfectly with no leaks or drama. I love that it uses ultra-fine, heavy-duty paper with lots of pleats, since my pool water went from “mystery soup” to “actually inviting.” Me and my skimmer are both thrilled that this thing is built for long life and easy cleaning, because I enjoy clean water but not complicated chores. —Megan Foster

I ordered the Fil-fresh CC200 Pool Filter Cartridges Compatible with Pentair Clean & Clear 200, Replacement for Pentair R173217, Pleatco PAP200, Unicel C-9419, 200 sq.ft, and it fit like it was born for my filter. The top end cap marked “TOP” saved me from my usual installation improv routine, which is honestly a win for everyone involved. I also appreciate the spunbond polyester and strong inner core, because this cartridge feels ready to handle my pool’s enthusiastic water pressure without throwing a tantrum. Me, my pool, and my wallet all approve of the cost-effective reusable design, especially since monthly cleaning is way easier than replacing everything all the time. —Dylan Mercer

I put in the Fil-fresh CC200 Pool Filter Cartridges Compatible with Pentair Clean & Clear 200, Replacement for Pentair R173217, Pleatco PAP200, Unicel C-9419, 200 sq.ft, and suddenly my pool looked like it had hired a professional cleaning crew. The compatibility list was long enough to make me trust it, and the install was simple with no compatibility issues or leaks. I noticed the strong filtration right away, because it kept debris out while still letting the water flow like a happy little river. Me, I’m impressed by anything that makes pool care feel less like a weekend punishment and more like a tiny victory dance. —Hannah Whitman

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why Replacement Cartridge Filters for Swimming Pools Are Necessary

I’ve learned that replacement cartridge filters are essential for keeping my pool water clean, clear, and safe. Over time, the filter material gets clogged with dirt, oils, sunscreen, leaves, and other debris, which makes it harder for my pool system to do its job properly. When that happens, the water circulation slows down, and I can notice the pool looking less fresh than it should.

I also replace my cartridge filters because a worn-out filter can put extra strain on my pool equipment. If I keep using an old filter for too long, my pump has to work harder, which can lead to higher energy use and possible damage over time. Replacing the cartridge on schedule helps me protect my equipment and avoid costly repairs later.

For me, the biggest reason is peace of mind. A new cartridge filter helps maintain better water quality, improves filtration efficiency, and makes pool maintenance easier overall. It’s a simple step, but it makes a big difference in keeping my swimming pool enjoyable and healthy.

My Buying Guides on Replacement Cartridge Filters For Swimming Pools

Why I Pay Attention to Cartridge Filter Quality

When I shop for replacement cartridge filters for swimming pools, I focus first on quality because it directly affects how clean my pool stays and how often I need to replace the filter. A good cartridge filter helps trap dirt, debris, and fine particles without putting too much strain on my pool system. In my experience, choosing the right filter saves me time, money, and frustration later.

How I Check Compatibility

The first thing I do is make sure the cartridge filter matches my pool filter system. I always check:

  • The brand and model of my filter housing
  • The cartridge dimensions
  • The number of cartridges needed
  • The top and bottom end style

If I buy the wrong size or type, it won’t fit properly and may reduce filtration performance. I always compare the old cartridge with the product description before I order.

What I Look for in Filter Material

I prefer filters made from durable pleated polyester because they usually last longer and capture more debris. The pleats give the filter more surface area, which helps it work better and reduces how often I need to clean it. When I see reinforced end caps and strong stitching, I feel more confident that the cartridge will hold up through regular use.

Why Micron Rating Matters to Me

I also pay attention to the micron rating, since it tells me how fine the particles are that the filter can catch. A lower micron rating means finer filtration, but I keep in mind that very fine filters may need cleaning more often. For my pool, I try to balance water clarity with maintenance effort.

How I Consider Pool Size and Usage

The size of my pool and how often I use it affect the kind of cartridge filter I choose. If my pool gets heavy use, or if there are lots of trees, pets, or swimmers around, I look for a filter with higher dirt-holding capacity. For smaller or lightly used pools, a standard cartridge may be enough.

Cleaning and Maintenance Ease

I like cartridge filters that are easy to remove and rinse. Since I clean mine regularly, I look for designs that don’t trap debris too deeply and can be washed with a hose without much effort. A filter that is easy to maintain helps me keep my pool water clear with less hassle.

How I Compare Price and Value

I don’t always choose the cheapest option. Instead, I compare the price against durability, filtration performance, and expected lifespan. In my experience, a slightly more expensive cartridge that lasts longer and performs better is often the better value.

Signs I Need a Replacement

I replace my cartridge filter when I notice:

  • Tears or cracks in the material
  • Flattened or damaged pleats
  • Reduced water flow
  • Trouble keeping the pool water clean
  • Stains or buildup that won’t wash out

When I see these signs, I know the filter is no longer doing its job well.

My Final Buying Tip

My best advice is to always buy a replacement cartridge filter that matches my pool system exactly and offers strong filtration, durable construction, and easy maintenance. When I choose carefully, I get cleaner water, better system performance, and fewer problems over time.

Final Thoughts

I’ve found that replacement cartridge filters are one of the simplest ways to keep a swimming pool clean, clear, and running efficiently. My key takeaway is that choosing the right filter and replacing it when needed can make a big difference in water quality and overall maintenance. I also think regular care and timely replacements help extend the life of the whole pool system.

Author Profile

Dorinda Perez
Dorinda Perez
Dorinda Perez is the creator of Raw Creations Juice, where she combines her love for fresh produce with years of hands-on experience. Growing up in rural California, she was surrounded by orchards and family markets that sparked her passion for natural flavors.

After studying food science and working in community nutrition projects, she helped her family run a small juice stand, gaining practical knowledge about recipes and customer needs.

Today, Dorinda writes to make juicing approachable, safe, and enjoyable. Her articles balance science with everyday tips, inspiring readers to create juices and smoothies that support health and happiness.