Noah Ferguson—January 24, 2026✓ Verified purchase
This filter cartridge is exactly what I needed. It's universally compatible, making replacement a breeze, and it effectively cleans our water. The quality is solid, ensuring long-lasting performance. Great value for maintaining a clean water supply! Read more
Heavy Duty—December 27, 2025✓ Verified purchase
this filter stopped a lot of impurities in my water before it went thru the softner. lasts about 8 months for me. Read more
Brenda Collinson—May 24, 2025✓ Verified purchase
Great filter. Easy to install. Read more
C. Jacobs—May 29, 2022✓ Verified purchase
Our utility sometimes overdoses water with chlorine, and it kills my water softener. I am using this to remove Chlorine from water before my water softener. Read more
Customer—April 10, 2025✓ Verified purchase
Works fine in my Whole House 20 inch Pentek Big Blue Filter Housing. I've used the Pentek EM-20BB cartridges for the last 10+ years but thought I'd try this Geekpure filter which was 35% less expensive. At a flow rate of 8 GPM there is a 2 psi pressure drop which is the same as the Pentek filters upon initial installation. The old filter I replaced was at a 3-4 psi drop at the same flow rate after being in service a year. I have pressure gauges installed ahead of and after the filter to monitor pressure drop. Feed water tested 1.3 ppm Free Chlorine and 0.1 ppm (or less) after the filter at that 8 GPM flow rate. We'll see how it goes. Read more
EmJay—January 29, 2026✓ Verified purchase
Bought cheaper than the one sold locally. Saved over $10. Needed to replace my old one that lasted from Nov - Jan on a house with a well that smells like sulfur. Made a big difference. Didnt want to spend a lot of $ on a sulfur removal treatment but this is a good alternative. I would continuously buy this and from this company. This will last for another 3 months. Read more
Anatoly Antoshkin—August 28, 2025✓ Verified purchase
Works for my big blue canister filter, we will see how long they will last however in a few months. seems to filter well though and is properly sized. Read more
Book Glutton—October 10, 2019✓ Verified purchase
In the past I have used the Pentek FloPlus filters. They go for $79 now on Amazon. Each time I replace a filter, I look for new alternatives. This time I found the Geekpure. It's close to 1/3 the price I was paying. It came with 5-star reviews. Why not! I know that a new filter is needed when the pressure drops. I replaced the old with the Geekpure. It's a 5 Micron carbon like the rest. The pressure was back. No smell of chlorine or anything else. Great tasting water. That's all I'm looking for. Now, we'll see how long it lasts. That's the final test. Read more