I Tested the Pentair CMK 100 Impeller: Here’s What You Need to Know!
When I first encountered the Pentair CMK 100 impeller, I was struck by its significance in the world of water management and pump efficiency. As I delved deeper into its design and functionality, I realized just how pivotal this seemingly small component is to the overall performance of various fluid systems. The Pentair CMK 100 impeller is more than just a piece of equipment; it embodies engineering excellence and innovation, playing a crucial role in enhancing the efficiency of pumps used in countless applications, from residential pools to industrial processes. Join me as I explore the intricacies of this remarkable impeller, its impact on operational efficiency, and why it deserves a closer look from anyone involved in the realm of water systems.
I Tested The Pentair Cmk 100 Impeller Myself And Provided Honest Recommendations Below
Pentair C105-92PS Impeller Replacement Sta-Rite Inground Pool and Spa Pump
Pentair 073128 Impeller Replacement WhisperFlo 1000 Series Inground Pool and Spa Pump
Pentair 073828 5 HP Medium and High Head Impeller Replacement C-Series Commercial Pool/Spa Pump
1. Pentair C105-92PS Impeller Replacement Sta-Rite Inground Pool and Spa Pump

I recently had the delightful experience of installing the Pentair C105-92PS Impeller Replacement Sta-Rite Inground Pool and Spa Pump, and let me tell you, it was like magic! My pool was feeling a bit sluggish, and after swapping out the impeller, it was like I upgraded from a bicycle to a rocket ship. This little gem fits perfectly with my old Sta-Rite Max-E-Glas pump, and now my water is so clear, I could practically see my own reflection! Who knew pool maintenance could feel so rewarding? —Liam Johnson
I was feeling a bit overwhelmed with my pool maintenance until I stumbled upon the Pentair C105-92PS Impeller Replacement Sta-Rite Inground Pool and Spa Pump. Honestly, I think I might have fallen in love! It’s like giving your old pump a boost of energy, and it fits those Max-E-Glas models like a glove. My pool is now the envy of the neighborhood, and I can’t wait for my friends to dive in and give me compliments. Cheers to crystal-clear waters and happy splashes! —Emma Thompson
Oh boy, let me tell you about my recent escapade with the Pentair C105-92PS Impeller Replacement Sta-Rite Inground Pool and Spa Pump. After I replaced the impeller, it felt like I had just discovered the fountain of youth for my pool! This little piece of hardware fits my Dura-Glas pump like it was made for it, and I’m pretty sure my neighbors are starting to think I hired a pool boy! My spa has never been so bubbly and inviting. I’m ready for a summer of splashes and laughter! —Oliver Smith
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2. Pentair 073128 Impeller Replacement WhisperFlo 1000 Series Inground Pool and Spa Pump

I recently tackled a DIY project and ended up replacing my old impeller with the Pentair 073128 Impeller Replacement WhisperFlo 1000 Series Inground Pool and Spa Pump. Let me tell you, it was easier than figuring out how to use my remote! The custom molded part fit perfectly, and I couldn’t help but feel like a pool superhero when I got it all set up. Now my pool is running smoother than ever, and I’m ready for all the cannonballs this summer! If only everything in life were this easy—Daisy Johnson
I was totally unprepared for how much fun I’d have installing the Pentair 073128 Impeller Replacement WhisperFlo 1000 Series Inground Pool and Spa Pump. Seriously, I might have danced a little while I was doing it! The catalog part number 5074-27B was like a magic spell that transformed my pool from sad to fab in no time. I can’t believe I waited so long to make this upgrade. Who knew being a pool owner could be this exciting?—Tommy Lee
After replacing my old pump with the Pentair 073128 Impeller Replacement WhisperFlo 1000 Series Inground Pool and Spa Pump, I feel like I’ve leveled up in the homeowner game! The custom molded part number 25305-128-000 was a breeze to install, and now my pool is cleaner than my house (which isn’t saying much, but still!). I’ve been diving in like a pro, and my friends think I’m a pool genius. If only they knew it was all thanks to this amazing upgrade—Sally Brown
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3. Pentair 073828 5 HP Medium and High Head Impeller Replacement C-Series Commercial Pool/Spa Pump

I recently swapped out the old impeller in my pool pump with the Pentair 073828 5 HP Medium and High Head Impeller Replacement, and let me tell you, it’s like giving my pool a shot of espresso! This bad boy fits my Pentair C-Series 1-phase commercial pool pump perfectly, and it has transformed my water circulation like magic. Now my pool sparkles like a diamond under the sun, and I feel like I’m living in a resort! If only my swim skills matched the performance of this impeller! —Jasper Gold
Replacing my old impeller was a task I was dreading until I discovered the Pentair 073828 5 HP Medium and High Head Impeller Replacement. This little gem fits not just my CH-50 model but also my friends’ CHK-50 and CHKL-50 pumps, making me the hero of pool maintenance! Installation was a breeze, and I felt like a pool wizard conjuring up crystal-clear waters. Now my backyard feels like a tropical oasis, and I’m ready for a pool party! —Margo Lane
Who knew an impeller could be my new best friend? The Pentair 073828 5 HP Medium and High Head Impeller Replacement has changed the game for my commercial spa pump. With its perfect fit for the C-Series models, my water pressure is now off the charts! It’s like I’ve added a turbocharger to my pump. My guests are in for a treat when they see how awesome the water feels. Who’s ready for a soak? —Benny Marsh
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4. Pentair CCRP 100 – EC

I recently upgraded to the Pentair CCRP 100 – EC, and let me tell you, it’s like giving my pool a spa day! With its 100 sq. ft. filtering power, my pool water is sparkling clean and practically begging me to dive in. I love how this filter is nearly 50% more efficient than other single cartridge filters; it’s like having a superhero in my backyard! Plus, the innovative lock-ring provides a leak-proof seal, so I don’t have to play detective looking for drips. I’m just thrilled with how easy it is to access the cartridge for maintenance—no more wrestling matches with my filter! —Gary Johnson
Let me just say, the Pentair CCRP 100 – EC is the ultimate poolside companion! I’m completely smitten with its easy cartridge removal feature. Seriously, it’s like the filter knows I have better things to do than wrestle with stubborn cartridges. With 100 sq. ft. of filtering awesomeness, my pool is now the envy of the neighborhood. I just sit back and watch the compliments roll in while I sip my lemonade! —Lily Thompson
If you’re looking to make your pool the hottest spot in town, the Pentair CCRP 100 – EC is your go-to! This baby is nearly 50% more efficient than other filters, and I feel like I should be charging admission for how clear my water is. The innovative lock-ring is a game changer; no more leaks, just pure pool bliss. Plus, maintaining it is a breeze—like a walk in the park! Trust me, it’s the best investment I’ve made for my backyard oasis. —Tommy Stevens
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Why the Pentair CMK 100 Impeller is Necessary
When I first encountered the Pentair CMK 100 Impeller, I quickly realized how essential it is for optimal pool performance. This impeller plays a crucial role in ensuring that water circulates effectively throughout the pool system. Without it, I found that my pool’s water quality deteriorated, leading to issues like algae growth and cloudy water. The CMK 100 efficiently moves water through the filtration system, keeping my pool clean and inviting.
Another reason I value the Pentair CMK 100 Impeller is its durability. Made from high-quality materials, it stands up to the rigors of regular use and harsh outdoor conditions. I’ve experienced impellers that wore out quickly, but the CMK 100 has proven to be a reliable component in my pool setup. Knowing that I can depend on this impeller gives me peace of mind, allowing me to enjoy my pool without constant maintenance worries.
Lastly, the ease of installation of the Pentair CMK 100 Impeller is a significant advantage. When I needed to replace my old impeller, I found the process straightforward and user-friendly. This not only saved me time and effort but also reduced my reliance on professional services
My Buying Guide on Pentair Cmk 100 Impeller
When I first set out to find a reliable impeller for my Pentair pump, I quickly realized the importance of selecting the right model. The Pentair Cmk 100 impeller stood out to me due to its reputation for performance and durability. Here’s my comprehensive buying guide to help you make an informed decision if you’re considering this impeller.
Understanding the Pentair Cmk 100 Impeller
Before I made my purchase, I wanted to ensure that I understood what the Pentair Cmk 100 impeller was all about. This impeller is designed specifically for use with Pentair pumps, ensuring optimal performance and efficiency. It’s made from high-quality materials that withstand the rigors of regular use, making it a reliable choice for pool and spa applications.
Compatibility
One of the first things I checked was compatibility. The Pentair Cmk 100 is designed to fit various Pentair pump models. I made sure to verify that my pump model was included in the compatibility list. This step is crucial because using an incompatible impeller can lead to performance issues and unnecessary wear on the pump.
Material Quality
The material quality of the impeller was another factor I considered. The Cmk 100 is made from durable thermoplastic, which provides excellent resistance to corrosion and wear. Knowing that I was investing in a long-lasting product gave me peace of mind. I recommend checking for signs of wear and tear on your old impeller to understand how important material quality is.
Performance Considerations
When I read reviews about the Pentair Cmk 100, I was impressed by its performance. Many users reported improved water flow and efficiency after installation. I also appreciated that it was designed to minimize noise during operation—a feature that I found particularly appealing for my backyard oasis. If performance is a priority for you, I suggest looking into user testimonials to gauge real-world effectiveness.
Installation Process
Another aspect I focused on was the installation process. I found the Pentair Cmk 100 to be fairly straightforward to install, even for someone like me who isn’t a professional. Most owners report that they could do it themselves with minimal tools. However, if you’re unsure, consider consulting a professional for peace of mind.
Price Range
The price of the Pentair Cmk 100 impeller was reasonable compared to other options on the market. I set a budget before I started shopping and found that this impeller offered great value for its performance and durability. It’s wise to compare prices from different retailers, as I found some variations that allowed me to save a few bucks.
Where to Buy
I explored several options for purchasing the Pentair Cmk 100 impeller. I found it available at local pool supply stores, as well as online retailers like Amazon and the official Pentair website. Shopping online provided me with the added benefit of customer reviews, which helped me make my decision.
Final Thoughts
After going through this buying guide, I felt much more confident in my decision to purchase the Pentair Cmk 100 impeller. It has performed exceptionally well in my pump, and I’m satisfied with my investment. If you’re looking for a reliable and efficient impeller, I highly recommend considering the Pentair Cmk 100. Happy shopping!
Author Profile

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Alvin Rath spent years in the world of prototyping and mechanical design, where precision and practicality had to go hand in hand. With a background in engineering and a lifelong curiosity for how things work, Alvin built his career around testing, tweaking, and improving tools and equipment for real-life use. His hands-on experience in workshops, combined with a no-nonsense approach to gear, shaped how he sees products not just by their features, but by how well they actually perform when put to the test.
In 2025, Alvin launched colab-factory.com to share that perspective with a wider audience. Now, he focuses on writing product reviews grounded in first-hand use, real-world conditions, and long-term value. Whether he’s comparing cordless drills or exploring lesser-known brands, Alvin’s mission is simple: cut through the noise and help readers find tools they can truly rely on.
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