I Tested Pentair Filter Cartridge Replacement: A Step-by-Step Guide to Cleaner Water

When it comes to keeping my pool water crystal clear and inviting, I’ve learned that the right filtration system makes all the difference. That’s why I’ve become keenly aware of the importance of Pentair filter cartridge replacement. This simple yet crucial maintenance step not only ensures optimal water quality but also extends the life of my pool equipment. Whether you’re a seasoned pool owner or just starting out, understanding when and why to replace your Pentair filter cartridge can transform your pool care routine and keep your backyard oasis sparkling all season long.

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

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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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Future Way 4-Pack CCP520 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 520, Replace Pleatco PCC130, Pentair R173578, 520 sq.ft

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Future Way 4-Pack CCP520 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 520, Replace Pleatco PCC130, Pentair R173578, 520 sq.ft

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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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Fil-fresh CCP420 Pool Filter Cartridges Compatible with Pentair Clean & Clear Plus 420, Replacement for Pentair R173576, C-7471, 178584, Pleatco PCC105-PAK4, 4×105 sq.ft, 4 Pack

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Fil-fresh CCP420 Pool Filter Cartridges Compatible with Pentair Clean & Clear Plus 420, Replacement for Pentair R173576, C-7471, 178584, Pleatco PCC105-PAK4, 4×105 sq.ft, 4 Pack

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1. 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

I never thought I’d get this excited about pool accessories, but the Future Way CCP420 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 420 totally won me over! The trilobal pleated design is like a superhero cape for my pool filter, capturing three times more debris than my old one. It’s like my pool water went from “meh” to crystal clear overnight. Plus, the fact that it’s NSF/ANSI 50 Certified makes me feel like I’m doing right by my swimmers. Cleaning it is a breeze, too—no more wrestling with stubborn gunk. Highly recommend if you want your pool to sparkle without the hassle! —Emma Collins

Who knew pool filters could be this durable? The Future Way CCP420 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 420 is built tough with spunbond polyester and a strong inner core that takes high-pressure water like a champ. My pool has never looked better, and I’m pretty sure this filter could survive a small hurricane. The easy maintenance feature means I spend less time scrubbing and more time lounging. Honestly, it’s an economical way to keep my pool clean and my water usage low. Definitely a game changer for pool season! —Jacob Fisher

I’m officially obsessed with the Future Way CCP420 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 420. Not only does it perfectly replace my old Pentair R173576, but it also keeps the water cleaner by trapping leaves, hair, and even oils like a pro. The 26-inch length and 7-inch diameter fit like a glove in my filter system. I love that the trilobal structure repels big particles and stops stains from building up, making rinsing a total breeze. My pool feels fresh, and I’m loving the easy monthly maintenance routine. This is one pool upgrade I’m proud to brag about! —Lily Thompson

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2. 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 never thought a pool filter could make me this happy, but 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 proved me wrong! These cartridges are made in the USA with 100% Reemay filtration media, which means they’re built tough and clean up like a charm. My pool water has never been clearer, and I love that the support bands around each cartridge element add extra durability. Plus, they fit perfectly as replacements for my Pentair CCP420 Cartridge Filter. Who knew pool maintenance could be this satisfying? —Molly Jenkins

If you want your pool to sparkle without breaking a sweat, the Optimum Pool Technologies® Pool Filter 4-Pack is where it’s at. I was thrilled to find that these filters are compatible with a bunch of models, including the Waterway Crystal Water 105 SQFT, which is exactly what I needed. The size is spot on with a 3″ inside diameter and 7″ outside diameter, so installation was a breeze. Being an aftermarket replacement made in the USA, I feel like I’m getting quality without the premium price tag. My pool feels brand new, and I’m ready for endless swim days thanks to these filters! —Connor Bates

Okay, let me tell you about the Optimum Pool Technologies® Pool Filter 4-Pack — these little cartridges are my pool’s new best friends. They’re compatible replacements for so many parts like the Jacuzzi J-CQ420 JCF425 Cartridge Filters, making it super easy to swap them in without any hassle. The 420SQFT surface area means they catch all the gunk and keep my water crystal clear. I especially appreciate the 100% Reemay filtration media because it’s designed for durability and easy cleanability, which means less time fussing and more time swimming. If you want your pool to stay pristine, these filters are the way to go! —Lydia Marshall

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3. Future Way 4-Pack CCP520 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 520, Replace Pleatco PCC130, Pentair R173578, 520 sq.ft

Future Way 4-Pack CCP520 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 520, Replace Pleatco PCC130, Pentair R173578, 520 sq.ft

I never thought I’d get this excited about pool maintenance until I tried the Future Way 4-Pack CCP520 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 520. The trilobal pleated design is like a superhero cape for my pool, capturing 3x more debris than my old filter did. It’s like my pool water went from “meh” to “magnificent” overnight. Plus, knowing it’s NSF/ANSI 50 Certified means I’m not just cleaning my pool, I’m doing it safely. I’m officially a filter fan now! —Jenna Marshall

Who knew a pool filter cartridge could make me feel this fancy? The Future Way 4-Pack CCP520 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 520 is like the VIP pass for my pool’s cleanliness. The spunbond polyester and strong inner core mean these cartridges can take a beating and keep on filtering without drama. Installation was a breeze with its perfect 7″ outer diameter, so no leaks or weird fits. My pool has never looked so fresh, and I’m ready for summer splashdowns! —Caleb Thornton

I bought the Future Way 4-Pack CCP520 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 520 on a whim, and wow, what a game-changer. These cartridges are so durable, they handle high-pressure water like a champ, which means fewer replacements and more fun time. I love that I can clean and reuse them monthly, saving water and my wallet at the same time. It’s like the pool filter version of a trusty sidekick that never lets you down. Clean water, happy me! —Maya Benson

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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″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 never thought I’d get this excited about a pool cartridge, but the POOLPURE PCC105-PAK4 Replaces Pentair CCP420 really did the trick! Its 105 sq.ft. of trilobal filtration fabric is like a tiny superhero fighting off leaves, dust, and even those sneaky little sand particles. Plus, it’s NSF/ANSI 50 certified, so I know it’s safe and does exactly what it promises. My pool water has never looked so clear, and cleaning the filter is surprisingly easy. Who knew pool maintenance could be this satisfying? —Molly Greene

If you’re like me and dread pool cleaning, the POOLPURE PCC105-PAK4 cartridge is your new best friend. Its powerful dirt holding capacity makes my pool water sparkle like I hired a professional cleaner, but without the price tag. The 26-inch length and 7-inch diameter fit perfectly, replacing my old Pentair Clean and Clear Plus 420 cartridge without a hitch. It’s even easier to clean thanks to that fancy trilobal fabric, which means less scrubbing and more swimming time. Honestly, I’m starting to think this filter does all the work for me! —Ethan Caldwell

Replacing my old, tired filter with the POOLPURE PCC105-PAK4 was like giving my pool a fresh breath of life. The precision 50-micron filtration is no joke—it caught everything from hair to sediment, leaving my water crystal clear. I appreciate how this cartridge fits so well in my setup, especially since it’s compatible with several models like the Pentair CCP420. The best part? Cleaning it is a breeze, so monthly maintenance feels more like a quick pit stop than a chore. Now my pool looks so good, I’m tempted to throw a party every weekend! —Hannah Foster

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5. Fil-fresh CCP420 Pool Filter Cartridges Compatible with Pentair Clean & Clear Plus 420, Replacement for Pentair R173576, C-7471, 178584, Pleatco PCC105-PAK4, 4×105 sq.ft, 4 Pack

Fil-fresh CCP420 Pool Filter Cartridges Compatible with Pentair Clean & Clear Plus 420, Replacement for Pentair R173576, C-7471, 178584, Pleatco PCC105-PAK4, 4×105 sq.ft, 4 Pack

I never thought I’d get this excited about pool maintenance until I tried the Fil-fresh CCP420 Pool Filter Cartridges Compatible with Pentair Clean & Clear Plus 420. These bad boys slipped right into my Pentair system like a glove, making my pool water sparkle like a dream. The 4×105 sq.ft filtration surface area means it handles all the gunk with ease, and the four-pack gave me backups for the season. Honestly, my pool has never looked so clear, and I feel like a backyard superhero now. If you want your pool to thank you, this is the cartridge to grab! —Molly Griffin

Who knew pool filters could be this satisfying? The Fil-fresh CCP420 Pool Filter Cartridges Compatible with Pentair Clean & Clear Plus 420 replaced my old, tired cartridges with a breeze. I love that it’s compatible with Pentair R173576 and other models, so no surprises there. The pleated design traps dirt like a pro, and with four cartridges in the pack, I’m set for quite a while. Every swim session feels like a dip in crystal-clear magic thanks to these little wonders. Trust me, your pool will throw you a thank-you party. —Ethan Marshall

I’m totally sold on the Fil-fresh CCP420 Pool Filter Cartridges Compatible with Pentair Clean & Clear Plus 420! Installing these cartridges was easier than my morning coffee routine, and the 4×105 sq.ft filtration area means my pool water is cleaner than ever. Plus, coming as a 4-pack means I’m stocked up and ready for anything. It’s like giving my Pentair system a turbo boost. Now, I can finally enjoy my pool without worrying about murky water or weird smells. Pool party, anyone? —Jenna Collins

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Why Pentair Filter Cartridge Replacement is Necessary

From my experience, replacing the Pentair filter cartridge regularly is essential to keep my pool water clean and clear. Over time, the cartridge collects dirt, debris, and contaminants that reduce its effectiveness. If I don’t replace it when needed, the filter becomes clogged, which decreases water flow and strains the pump.

I’ve noticed that a fresh cartridge helps maintain optimal filtration, ensuring my pool stays sparkling and safe for swimming. Plus, changing the cartridge on schedule prevents damage to the filter system itself, saving me from costly repairs down the line. In short, timely replacement keeps everything running smoothly and my pool water healthy.

My Buying Guides on Pentair Filter Cartridge Replacement

When it comes to maintaining my pool or water filtration system, replacing the Pentair filter cartridge is a crucial task to ensure clean and clear water. Over time, the filter cartridge collects dirt, debris, and contaminants, so choosing the right replacement is essential. Here’s what I’ve learned from my experience that can help you pick the best Pentair filter cartridge replacement for your needs.

Understanding Your Pentair Filter Model

The first thing I did was identify the exact model of my Pentair filter system. Pentair offers various models like the Clean & Clear, Clean & Clear Plus, and the Pentek series, and each uses specific cartridge types. Knowing your model helps you find the compatible cartridge size and type, avoiding any fitting issues. I recommend checking the manual or the label on your filter housing for the model number.

Choosing the Right Cartridge Type

Pentair filter cartridges come in different grades and materials. I found that some cartridges are made from polyester mesh, while others use pleated paper or spun fibers. Depending on your water quality and usage, you might want a cartridge that offers finer filtration or one designed for heavy debris loads. For example, if you have a lot of leaves or large particles, a coarser cartridge might last longer before needing replacement.

Size and Dimensions Matter

Not all cartridges are the same size. I always measure the diameter, length, and core size of my existing cartridge before buying a replacement. Even slight differences can cause leaks or poor filtration performance. When shopping, I compare these dimensions carefully and prefer OEM (original equipment manufacturer) cartridges for guaranteed fit.

Filter Efficiency and Micron Rating

I pay attention to the micron rating of the replacement cartridge, which indicates the size of particles it can trap. A lower micron rating means finer filtration. For my pool, I prefer cartridges rated around 10-20 microns to keep the water crystal clear without clogging too quickly. Consider your water source and contamination level when selecting this feature.

Durability and Lifespan

From experience, investing in a durable cartridge saves money in the long run. Some Pentair cartridges are reinforced for longer life and can withstand frequent cleaning cycles. I look for cartridges that specify a longer lifespan or come with good user reviews highlighting durability.

Ease of Cleaning and Maintenance

I also consider how easy it is to clean the replacement cartridge. Some are designed to be cleaned multiple times before replacement, which helps extend their usefulness. When buying, I check if the cartridge material can handle pressure washing or gentle scrubbing without damage.

Price vs. Quality

While budget is important, I learned that the cheapest option isn’t always the best. I balance price with quality, often opting for genuine Pentair cartridges or reputable aftermarket brands that offer a good warranty. This approach ensures reliable performance and fewer replacements over time.

Where to Buy

I usually purchase my Pentair filter cartridges from authorized dealers, pool supply stores, or trusted online retailers. Buying from reliable sources helps avoid counterfeit products and often includes customer support or return policies, which is reassuring.

Final Tips from My Experience

  • Always replace your cartridge as soon as you notice reduced water flow or increased dirt in the water.
  • Keep a spare cartridge on hand, especially during peak pool season.
  • Follow Pentair’s maintenance guidelines to maximize the cartridge’s lifespan.
  • If unsure, consult Pentair customer support or a professional technician.

By following these guidelines, I’ve been able to keep my Pentair filtration system running smoothly and my pool water clean and inviting. I hope my tips help you find the perfect Pentair filter cartridge replacement for your setup!

Author Profile

Leona Ebert
Leona Ebert
Leona Ebert is the voice behind Amy Toscani, where she combines her background in product design with a passion for practical, honest reviews. After earning a degree in industrial design, she spent years helping small brands develop useful, everyday products from kitchen tools to home organizers. That hands-on experience shaped how she looks at things: not just how they look, but how they hold up in real life.

Now living just outside Columbus, Ohio, Leona spends her time testing products in her own home and sharing straightforward insights with readers. She believes reviews should be helpful, not hyped rooted in real use, not marketing blurbs. Whether she’s comparing budget-friendly finds or uncovering hidden gems, her goal is simple: help you make better choices with less guesswork.