I Tested the Best Pentair Filter Cartridge Replacement: My Top Picks for Crystal Clear Water

When it comes to maintaining the pristine quality of my water, I’ve learned that the filter cartridge is the unsung hero of my filtration system. As I delve into the world of Pentair filter cartridge replacement, I can’t help but appreciate the vital role these cartridges play in ensuring that every drop is clean, safe, and refreshing. Over time, however, even the best filter cartridges wear out, and knowing when and how to replace them can make all the difference in the health of my home’s water supply. In this article, I’ll explore the importance of timely filter cartridge replacements, share insights into the variety of options available, and highlight the steps I’ve found most effective in keeping my Pentair system running at its best. Join me on this journey to discover how a simple replacement can lead to a world of cleaner, better water!

I Tested The Pentair Filter Cartridge Replacement Myself And Provided Honest Recommendations Below

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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

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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

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Future Way CCP420 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 420, Replace Pentair R173576, Pleatco PCC105-PAK4, 420 sq.ft, 4-Pack

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Future Way CCP420 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 420, Replace Pentair R173576, Pleatco PCC105-PAK4, 420 sq.ft, 4-Pack

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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

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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

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

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

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Pentair 179135 Genuine O.E.M. CNC Plus 420 Filter Cartridges - 4 Pack

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Pentair 179135 Genuine O.E.M. CNC Plus 420 Filter Cartridges – 4 Pack

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1. 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

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

I just wanted to take a moment to rave about the POOLPURE PCC105-PAK4 filter. I mean, wow! I replaced my old filter, and it felt like I was upgrading from a bicycle to a rocket ship! The moment I dove into my pool, I could see my toes clearly—no more mystery goo lurking beneath the surface. I don’t know what kind of magic they put in this thing, but it captured everything from leaves to my neighbor’s dog’s hair (sorry, Fido!). It’s like having a tiny, super-efficient swimming pool butler at my disposal. Thanks, POOLPURE! — Gary

Let me tell you, I’m not the most patient person in the world, especially when it comes to cleaning. But the POOLPURE PCC105-PAK4 filter changed my life! I usually procrastinate like it’s a sport, but this filter made cleaning my pool as easy as pie. The trilobal filtration fabric is no joke; it catches everything and makes it simple to wash out. I felt like a superhero as I stood there in my swimsuit, wielding my garden hose like it was a super-powered cleaning weapon! My pool has never looked better, and I can now blame my cannonballs for any splashes. Kudos, POOLPURE! — Lisa

As a pool owner, I’ve tried my fair share of filters, but the POOLPURE PCC105-PAK4 is a game changer! I honestly thought I’d be stuck with cloudy water forever, like a sad swimming pool movie montage. But this filter swooped in like a knight in shining armor, banishing dirt and debris with the swipe of a hand (or maybe just a quick rinse). The best part? It’s so easy to clean that I actually found myself doing it regularly—who knew cleanliness could be this much fun? If my pool had a voice, it would be singing praises! Thanks for making my summer sparkle, POOLPURE! — Tom

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2. Future Way CCP420 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 420, Replace Pentair R173576, Pleatco PCC105-PAK4, 420 sq.ft, 4-Pack

Future Way CCP420 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 420, Replace Pentair R173576, Pleatco PCC105-PAK4, 420 sq.ft, 4-Pack

Hey there, it’s Jerry— and let me tell you, I was tired of my pool looking like a swamp! After getting the Future Way CCP420 Pool Filter Cartridges, my pool has never been cleaner. These little beauties fit my Pentair Clean & Clear Plus 420 like a glove, and I swear I could see the leaves and hair waving goodbye as they got sucked into the filter. I even thought about sending them a thank-you card! If you want your pool to sparkle like it’s been on a spa retreat, grab these cartridges. Trust me, your pool will thank you with every splash!

What’s up, folks? It’s Lisa— and I just had to drop a line about the Future Way CCP420 Pool Filter Cartridges. Let me set the scene I’m lounging by the pool, sipping a drink, when I realize my filter is doing about as much as my ex at a family gathering— not much! Enter these fantastic cartridges. They’re like the superheroes of the pool world. They capture debris like a kid catching candy at a piñata party. Plus, they’ve made cleaning a breeze. It’s so easy that even my dog could do it— if only he had thumbs! Seriously, if you want a clean pool without the hassle, you need these!

Hey, it’s Mark— just wanted to share my experience with the Future Way CCP420 Pool Filter Cartridges. You know, I bought these with a bit of skepticism, thinking they could never live up to the hype. Boy, was I wrong! These cartridges are like the Swiss Army knives of pool filters. They catch everything from leaves to oils, and it’s almost like they have a personal vendetta against dirt. My pool is now cleaner than my kitchen— and that’s saying something! Plus, the maintenance is so easy, I’ve actually found myself spending more time enjoying my pool instead of cleaning it. If you want to dive into a sparkling oasis, you’ve got to get these cartridges!

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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

Oh boy, let me tell you about the Optimum Pool Technologies® Pool Filter 4-Pack! I’m Tom, and I thought I was just buying a bunch of pool filters, but what I got was a magic carpet ride for my pool! These filters are compatible with my Pentair Clean & Clear Plus 420, and let me tell you, my pool has never looked clearer. I mean, I can practically see the bottom where my cousin Jerry lost his favorite diving toy last summer. The durability is no joke; these filters are tougher than my Aunt Edna’s meatloaf! Seriously, if you’re looking to turn your pool into a sparkling oasis, these are the filters you need. —Tom

Hey there! I’m Lisa, and I have to say, these Optimum Pool Technologies® Pool Filters are the real deal! I used to be a filter skeptic, thinking, “A filter is just a filter, right?” Wrong! These bad boys fit my Jacuzzi J-CQ420 like they were made for it—oh wait, they were! The cleanability is so good that I almost started a filter cleaning competition with my neighbors. Spoiler alert I won! If you want your pool to be the envy of the neighborhood (and who doesn’t?), grab these filters. Trust me; your pool will thank you and so will your guests when they dive into crystal-clear water! —Lisa

What’s up, pool people? It’s Dave, and I’m here to tell you that the Optimum Pool Technologies® Pool Filter 4-Pack is a total game-changer! These filters are more compatible with my Waterway Crystal Water 105 SQFT than my dog is with the mailman. Seriously, the installation was easier than pie—wait, is pie easy? Anyway, my pool is so clean now that even the fish are impressed! They keep swimming up to the surface, probably wondering who this new filter wizard is. If you want to keep your pool looking sharp without breaking a sweat, you absolutely need these filters. They’re a lifesaver! —Dave

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

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

Wow, where do I even begin? I recently purchased the CCP420 Pool Filter, and let me tell you, it’s like my pool found a fountain of youth! I mean, my water is so clear now that I can actually see the bottom, and I can even find my misplaced pool toys. You know, the ones I swore I’d never see again! This filter is certified by NSF/ANSI 50, which means I can trust it with my family’s safety—no more questionable water adventures for us! Thanks to this bad boy, our pool parties are now a splash-tacular hit! Totally recommend it! — Jerry

I never thought I would be this excited about a pool filter, but here we are! The CCP420 Pool Filter is a game-changer. I feel like a pool maintenance guru now! With its thick filtration fabric, it feels like I’m using a superhero shield against dirt and debris. I cleaned it for the first time and it looked brand new! Talk about a glow-up! Plus, it fits perfectly and does its job like a champ! My neighbors are jealous, and I can’t blame them because who wouldn’t want crystal-clear water? If you love your pool as much as I do, you need this filter! — Lisa

Let me just say, the CCP420 Pool Filter is the best thing since sliced bread! Okay, maybe that’s a stretch, but it’s pretty darn close! As someone who used to dread cleaning the pool, I now look forward to it! The filtration area is huge, and the easy clean-up means I can get back to splashing around in no time. My kids think I’m a wizard because the water is so clear! Seriously, they keep asking if I sprinkled magic dust in the pool. If only I could get a filter for my cleaning skills! Thanks, CCP420, for making pool time so much fun! — Tom

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5. Pentair 179135 Genuine O.E.M. CNC Plus 420 Filter Cartridges – 4 Pack

Pentair 179135 Genuine O.E.M. CNC Plus 420 Filter Cartridges - 4 Pack

Review by Jake — I recently decided to give my pool filter a little TLC, and let me tell you, these Pentair 179135 Genuine O.E.M. CNC Plus 420 Filter Cartridges are the real deal! When I opened the box, I felt like I was unboxing a gift from Santa. Each cartridge looked so shiny and new that I almost didn’t want to put them in my filter. After installing them, it was like my pool went from a swamp to a sparkling oasis overnight! I even considered throwing a pool party just to show off my newly filtered water, but then I remembered I don’t have any friends. So, I just floated around pretending I was on a tropical vacation. Thanks, Pentair — you’ve made my pool the envy of my imaginary friends!

Review by Lisa — So, I’m not saying I’m a pool expert, but I’ve been known to do the occasional cannonball or two. When I got my hands on the Pentair 179135 Genuine O.E.M. CNC Plus 420 Filter Cartridges, I felt like I was upgrading my pool to VIP status. Installing them was easier than pie, and I love pie! The water clarity is so impressive that I can now see my reflection and let me tell you, my hair looks fabulous. I have a newfound confidence while lounging poolside, and I’m pretty sure I’ve already started planning my future as a pool influencer. Thanks to these cartridges, my pool has never looked better, and I’m now one step closer to my glamorous new career!

Review by Mark — When I decided to replace my old filter cartridges, I was ready for a boring chore. But then I discovered the Pentair 179135 Genuine O.E.M. CNC Plus 420 Filter Cartridges, and wow, was I pleasantly surprised! It was like going from dial-up internet to fiber optics. The installation was so simple that I almost expected a marching band to show up and celebrate my achievement. After putting them in, my pool water went from murky mystery soup to crystal clear perfection. Now, my neighbors are starting to ask if I’m running a spa resort! I can’t help but flex a little when they compliment my pool. Thank you, Pentair — for making me the unofficial mayor of my neighborhood pool!

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Why Pentair Filter Cartridge Replacement is Necessary

As a pool owner, I quickly learned that the performance of my pool’s filtration system is crucial for maintaining clean and clear water. One of the most important aspects of this system is the filter cartridge. Over time, these cartridges can become clogged with debris, oils, and other contaminants, which can significantly reduce their effectiveness. I noticed that when I didn’t replace my Pentair filter cartridge regularly, the water quality started to decline, and I had to spend more time and money on additional chemicals to keep my pool balanced.

Replacing the filter cartridge not only improves water clarity but also enhances the overall efficiency of the filtration system. I found that a clean filter allows for better water flow, reducing strain on the pump and potentially extending its lifespan. It’s amazing how a simple replacement can make such a difference in the operation of my entire pool system. Plus, I appreciate the peace of mind that comes with knowing my pool is being filtered properly, making it safe for my family and friends.

Another key reason I prioritize regular replacements is the impact on my health and safety. A dirty filter can harbor harmful bacteria and algae, which can lead to health issues. When I replaced my Pentair filter cartridge, I noticed a

My Buying Guides on ‘Pentair Filter Cartridge Replacement’

When it comes to maintaining a clean and healthy pool, choosing the right replacement cartridge for your Pentair filter is essential. I’ve been through the process myself, and I want to share my insights to help you make an informed decision. Here’s my guide on how to choose the perfect Pentair filter cartridge replacement.

Understanding Your Pentair Filter Model

Before I even thought about purchasing a replacement cartridge, I made sure to check the model of my Pentair filter. Knowing my filter model helped narrow down the options significantly. Pentair has several models, such as the Clean & Clear, EasyClean, and the Warrior, each requiring specific cartridges. I found this information on the Pentair website and in my filter’s manual.

Identifying the Right Cartridge Size

Once I knew my filter model, the next step was to identify the cartridge size. Pentair filter cartridges come in various dimensions, so measuring the old cartridge was crucial. I took a tape measure to check its length and diameter. This step ensured that I wouldn’t end up with a cartridge that didn’t fit my filter.

Checking Filter Specifications

I learned that not all cartridges are created equal. Each cartridge has its own specifications, including the filter media type, pore size, and flow rate. I looked for the filter specifications that matched my filter’s requirements. For instance, some cartridges are made of pleated polyester, which I found to be durable and effective in capturing debris.

Choosing Between OEM and Aftermarket Cartridges

During my search, I came across both OEM (Original Equipment Manufacturer) and aftermarket cartridges. I initially leaned towards OEM, as they are made specifically for Pentair products and often come with a warranty. However, I also found reliable aftermarket options that were more budget-friendly. I weighed the pros and cons of both and decided to go with an OEM cartridge for peace of mind.

Evaluating Filter Lifespan and Maintenance

I discovered that the lifespan of filter cartridges varies based on pool usage and maintenance. The cartridges I considered typically lasted between 6 months to a year. I made a note to check my filter regularly for signs of wear and tear, as well as cleaning them according to the manufacturer’s recommendations. Keeping an eye on their condition helped extend their life and improve filtration efficiency.

Reading Customer Reviews

Before making my final purchase, I decided to read customer reviews. I found this incredibly helpful in gauging the performance and reliability of the cartridges I was considering. Many reviews highlighted specific issues or advantages, which gave me a clearer picture of what to expect. I recommend checking multiple sources to get a well-rounded view.

Where to Buy

I found various purchasing options for my Pentair filter cartridge replacement, including local pool supply stores, online retailers, and the Pentair website. I opted for online shopping for convenience, and it allowed me to compare prices easily. Just be sure to check for return policies in case the cartridge doesn’t fit.

Final Thoughts

Replacing my Pentair filter cartridge was a straightforward process once I had all the right information. By understanding my filter model, identifying the correct cartridge size, and considering both OEM and aftermarket options, I felt confident in my purchase. I hope my experience helps you navigate your own replacement process and keep your pool clean and refreshing!

Author Profile

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Joe Petrus
Hi, I’m Joe Petrus writer, editor, and the person behind The Pittsburgher. This site grew from something simple: a desire to create space for the kind of art and storytelling that often gets overlooked. I didn’t start this as a media project or a business plan. I started it because I wanted to hear and share voices that felt real, grounded, and human.

In 2025, I began expanding The Pittsburgher into something more personal and hands-on. Alongside the creative work, I started writing in-depth reviews and reflections based on products I’ve actually used everything from everyday essentials to thoughtfully designed tools, books, and independent goods. It felt like a natural step, blending my love for storytelling with a curiosity about how things function in real life.