Pentair Pentek GAC-10 Carbon Water Filter, 10-Inch, Under Sink Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 2.5" , Blue

I had a DIY dual filter setup with Pentek 158643 3/8" #10 3G Slim Line Clear Filter Housings for my cold sink water. A while back I downgraded to the cheap generic filters, and noticed a huge downgrade in taste. It was not drinkable water. So to fix it, I added a third Pentek filter housing, and went back to what worked- genuine Pentek filters. The sediment filter I had didn't seem to fit properly, I don't think it sealed at all, so I ditched that completely and used a cheap but working DuPont WFPFC8002 Universal Whole House Carbon Wrap 2-Phase Cartridge as a sediment filter. Second in line I swapped the $6.50 DuPont with the $9.63 Pentek CBC-10 Carbon Block Filter Cartridge, 9-3/4" x 2-7/8", 0.5 Micron, a solid secondary filter w/ a perfect fit. The Pentek feels like it weighs 3x as much as the Dupont, no question it's worth the few extra dollars. The third and final filter was the hardest decision. I have tried both the Pentek ChlorPlus 10 Carbon Block Filter Cartridge, 10" x 2-1/2", 1 Micron, and the Pentek CC-10 Coconut Carbon Drinking Water Filters (9.75" x 2.875"), both of which were fantastic, make a noticeable difference to the taste of the water, and costs about $15-20. Instead, I went with a $12 option, the Pentek GAC-10 Drinking Water Filter (9-3/4" x 2-7/8"), hoping it would deliver similar results, especially considering the town water is fairly clean to begin with, ppm around 48. Would probably go with the CC-10 next time, but I'm very happy with the current results. The Pentek filter and housing combo really restored my drinking water back to amazing. Neighbors knock at my door with 5 gallon jugs because they can taste the difference too.

I installed this in our GE reverse osmosis system and it was a perfect fit. The price is far cheaper than the comparable GE part.

Little more expensive but unbeatable quality!!

Great filter. I wish the filter had a product number of some kind on it. I just bought a house with a filtration system installed. I had an extremely hard time trying to find the exact filter to change out in my system with no product identification on that. Other than that, the product works great.

I have been using this brand for years in my reverse osmosis system and have no problems with it

I use these filters as well as Pentek CC-10 Coconut Carbon Filter Cartridge, 9-3/4" x 2-7/8", 20 Micron in my 3-sump RO (Reverse Osmosis) system. I really like that the water has to pass through the entire filter, rather than short-circuit from the closest point. This means it does a much better job of filtering. This filter would work just as well in a non-RO standard drinking water filter application.Note, these should not be used in high-flow applications such as a whole-house filter, as it will not pass adequate flow and will cause flow restriction and hence pressure drop.

The person who installed and from whom we bought our R/O system charges a LOT to replace even the cheapest filters, so we decided to look into doing it ourselves. My husband is pretty handy, and with some tutoring from Water Filters Online, a seller we also originally found on Amazon, we were able to replace all of our filters except the membrane, which is still fine, for a very small investment. This filter is great, just like the one it replaces, and a very good value. Our service from this seller was great, too!

There are lots of not genuine filters out there. This is the one that is actually made by Pentair. There are other companies like T** X* LLC who take used carbon particles from industrial air filters and pour them into plastic tubes with a photocopy of the Pentair label stuck on the wrapper then sell them for a lower price, but you get what you pay for!