1 Micron 2.5" x 10" Whole House CTO Carbon Water Filter Cartridge Replacement for Under Sink Water Filter System, Dupont WFPFC8002, WFPFC9001, FXWTC, SCWH-5, WHEF-WHWC, WHCF-WHWC, AMZN-SCWH-5, 4Pack

This is an effective product. I did not measure the levels of this or that et cetera, but there is a noticeable change in the flavor of the water. I have used these before and they last for several months. The last one was good for over half a year before I noticed any change in flavor. I suppose it is not good to keep using them for longer than the recommended period because the filter itself could start breaking down and getting into the water.

I am new to a filtration system and had no idea how often to replace my filters. I needed two charcoal and one pre-filter and cannot believe how great the water tastes now. Perfect fit! Great water flow and quality! Not sure how often I will need to replace the filters given we generally only use it for drinking.I would recommend these filters!

Good filters at a fair price, change them ever tree months and water taste great!!

Half worked half didn't. It was a horrible experience. Taking my water pressure down to lower than 5psi on 3 of the 4 filters! These did not last for me. I was so disappointed no refund or promotion included. Sad to say this cause they worked really well for my first year supply. Really upset and would rather pay 15 dollars per filter at home Depot then pay for this again they were super disappointing. I buy a years worth at a time and these didn't even last me 4 months.Update on my review May 2025. If you have an issue they customer service is above par! Try your luck, they worked for me for over a year before they didn't but they sent me a replacement and after having another unlucky batch it seemed they refunded me my full purchase price. I would give them a try due to the excellent customer service.

You can definitely tell the impact the filter has on the house. Attached is a before and after 4 months. Will be reordering and changing more frequently since it says that it can be changed every 3-6 months depending on your geography and amount of water sedimentation coming from the street i guess. I live in Puerto Rico and the water tends to be pretty sedimented. Works really well but the durability is not the best.

These filters work great

Great filters not the lowest Micron but 1 micron is good for lot of contaminants.

Good filter for 30 to 45 days