- AO Smith Whole House Water Filter System - 600K Gallons or 6 Years - Whole Home Filtration for Well & City Water - 3/4" Inlet/Outlet - NSF Certified - AO-WH-Filter

I finally got around to having this installed by a plumber in my water softener loop. I had one that was 8 years old (another MFR) that I recently removed and decided that I NEEDED a chlorine filter. My old one was about 4 feet high and I wasn't sure if I needed to replace it or not, but I felt after 8 years, it must be due. I flushed this with the garden hose and the water was running clear in less than 10 minutes, so that was easy. What took me so long to install this was actually the plumber I was using. He had been to my home for a water softener and then again to remove the old chlorine filter. After BOTH visits, my water tasted and smelled like acetone for about 3 days even after flushing for over an hour. Well, I will tell you WHY this happened. The original plumber was in a rush and did not let the pvc primers/glue cure and completely dry enough before turning the water back on! I got a new plumber who waited about 45 minutes for it to cure and dry.....no smell or taste in the water! If you are doing this yourself or hiring someone, make sure you/they wait more than enough time for it to cure and dry COMPLETELY. If your water smells or tastes like acetone, there was not enough time given to dry/cure. And in my case 15-20 minutes was not enough time but 45 minutes worked well. If you get the smell/taste of acetone after turning the water on, the only thing you can do is wait it out, about 2-3 full days. The thing I noticed about this filter is that it is made by the same manufacturer that makes Aquasana filters. How do I know this? It was on the shipping label from the MFR to Amazon, then Amazon to me (there were 2 labels on the box) These exact filters are sold in lowes too for the same price here, but you don't have to lug it around and you may save on sales tax ordering online. I thought they were much heavier than they actually are which is why I ordered here. It works well, I smell no chlorine on any tap in the house. I also installed a pre-filter, (AO smith as well) that I picked up locally and installed that BEFORE this charcoal filter to get any sediment and rust particles from the city water. Yes, city water does have it and after one day, you can see the prefilter is no longer pristine white. After 3 days the prefilter is a light orange and I NEVER had a visible rust problem in my home. Now I know why my salt softener filter was slightly orange after a month! rust in the water. AFTER the charcoal filter is my salt water softener. I will absolutely buy this filter again in 6 years when it comes time to replace it. Great filter, great price, Amazon convenience and customer service if you need it.

self installed 3 days ago, easy for a retired plumber or even someone with decent mechanical ability and a little piping know how. just started using it and it seems to be working as it should as far as cleaning up the water system. I noticed the odor smells better and fresher, showers feel better and taste is better. I'm on a city system so I can't say how it would hold up on a well system. But I can say it's a definite improvement on my water system. Priced right compared to other systems for sure.

We are on public water and the smell of Chlorine was intense. It was drying out our skin and hair. We installed a pre sediment filter before the Carbon filter and we cannot be happier. Highly recommend.

Hard to find item locally. Was delivered quickly and fair price. Works well.

DO NOT PURCHASE We purchased this with the other piece and prefilter in May 2025. It made our water worse. It also damaged our dishwasher. Hard water feel all over the dishes. We had element replaced and it still has hard water feel. This is a piece of crap. And I think it is leaking from time to time bc I see a wetness around the base of the unit from time to time. I thought the problem was my dishwasher but it wasn't. These things are not doing anything and making it worse. If I could get my money back I would. Save your money and just get the salt type.

We are a week into this system, we installed the larger prefilter, this filter, and the descaler unit. The instructions were somewhat limited in scope. The most important thing is all the strange chemical smell was gone from our water from the very first glass! We also did a (Zero Water) instant test and it cut the raw water reading of over 480 to just less than 200. That may improve a bit over time as our old copper lines descale a bit. The water tastes fantastic and feels great in the shower. It is not slimy like a salt-based system. We expect the prefilter/sediment filter will be a once-a-month thing and have already put it on our subscribe and save service. The only con I have is they don't have a flow direction arrow on the big filters, yet the instructions (although) vaguely tell you by the location of the brand sticker on the front of the main filter housing. If they had a direction of flow arrow I would not have needed any instructions at all! They have a massive sticker reminding you to flush before using the filter so why not a simple sticker telling you the flow direction? It is on the sediment filter housing, molded into the plastic even! Saved hundreds on the system and thousands by installing it ourselves!

When we recently moved into our home, we switched from well to city water. The chlorine taste and smell of the city water was terrible! I was buying cases of water to drink and it was adding up. We decided to purchase this whole house filtration system after reading all of the great reviews. My husband installed it himself in less than a day and instantly we could tell a difference in the quality of our water. There is absolutely no smell and it tastes so amazingly fresh! The size of this device is very compact and fits in a convenient area that's not in the way. In six years, we will purchase another!! 😊

This was a replacement of a previous filter system. We had no issues and that is why we purchased the same unit. This is a great product. We had to return the product because one of the imports had been stripped and would not probably connect to the water source without leaking. Sometimes you just get an item that was not manufactured correctly. I would recommend this system. The return process was easy.

System works very well, bought the pre filter as well and I would recommend to do this for sure as a life extender to the main charcoal filter. Water is perfectly clean and no detectable chlorine what so ever.