Aquasana Under Sink Water Filter System - Reduces PFAS, Lead, & Chlorine in Drinking Water - Under Counter Claryum Filtration for Kitchen - 3-Stage Max Flow - Brushed Nickel Faucet - AQ-5300+.55

I love it. The install was fairly easy, except for the position I chose under my sink. I had a small leak at the start, but that was because I hadn't pushed the water line in deep enough. So, it is great, there were just a couple of me problems.

The kit came with zero instructions, these are not hard to find online. Some of the parts looked a little dirty, as if this may be a refurbished unit. I'm taking 1 star off for those items. Otherwise it was fairly easy to install, tastes good, and has decent flow rate. I was worried about leaks seeing reviews of what happens when folks go to exchange the filters. Luckily no leaks upon install. We probably use an average of a gallon a day, so hoping these filters last a while. I originally wanted a whole-home filter, but after doing the research and seeing how much replacement filters/parts are and the intervals to exchange them, we couldn't afford the ongoing costs. These filters seem to be pretty reasonable in price, and a good compromise over a whole-home system. I did have to buy a 1.25" diamond blade hole saw and auger to create the additional hole required through our granite countertop. This was also fairly straight forward, but a lot of cost for the tools for a 1-time job and it was very nerve racking lining up the hole as near-perfect as I could get it and trying to keep the bit from skipping around when first starting it. I probably saved a hundred dollars or more vs hiring a pro to come drill it. The faucet is nice, but a lighter colored oil rubbed bronze than most plumbing parts. It does sit a little less than plumb, and I wished there were instructions on how to take the little handle off so you can adjust where the on/off starts. As others have said, the water tube attaches to the bottom and could easily be pulled out, so be careful messing around under your sink after it's hooked up. It makes no noise when turning on/using, I do hear a tiny clunk when I turn it off. The tubes that go into the base unit have to be pushed all the way in. I thought I had the larger one in and decided to double check it and I pushed pretty hard and twisted a little and it went in about another inch. I'm glad I checked it. The smaller outgoing tube was easier to push in. I think a lot of people might be having issues with leakage not having these tubes pushed in all the way, especially the larger intake tube. Leave a little extra tubing when you install, so you can take the base unit off the wall if needed to change the reminder button-cell battery without worrying about a tube coming off. I have not done any water tests, I trust the tests others have done and posted in their reviews. I know this doesn't remove fluoride and a few other things, but it's got to be better than a ceramic berky-like filter. Aquasana should include instructions, and a shut off valve just for the tube going into the filter (so you can keep the cold water active and turn off the filter for maintenance). **Update Feb 2024-water flow completely stopped after 6 months. Emailed customer support, no response. I took a chance and ordered a replacement filter set direct from manufacturer. Kit arrived in a week and I replaced all 3 filters. Two filters were pretty dark colored. Kit also came with a new battery. Turns out the original kit had the battery installed backwards, so it never beeped when it was time to replace. New filter change, new battery installed the correct way, and I get a few beeps and turn back on the water. Checking for leaks for a couple weeks. All is good, water pressure is back to normal. I hear about the cartridges leaking after opening and changing the filters, O-ring problems, etc. I was very slow and deliberate taking everything apart and putting it back together to make sure I never cross threaded anything or damage the o-rings. When you insert the filter, there is a little play/movement possible while you try to screw the housing in around it. Hold it upside down so gravity helps keep the filter tight to the lid while you screw the cover back on. And by the way, it's been 3 months since I emailed customer support, no response besides the obligatory "thank you for emailing support, someone will be with you...", no follow up emails from support. **Update Jan 2026-Unit has been working great, no leaks. Haven't had any issues since 2024. I've changed the filters about every 6 months or whenever it starts beeping. If you set up auto-shipment direct from the manufacturer for filters, note that they charge your credit card, then ship the filters about 2 weeks later and it takes about a week to get to you.

Paid $245 in Jan 2025. Paid a few hundred dollars to a licensed plumber to install. Plumber is very experienced and does work for us regularly. It worked fine for 18 months. Replaced filters every six months without issue. Replaced filters at 18 month mark and it stopped working a few days later. Isolated the problem to the first filter in the series. Amazon was nice enough to send a second set of filters for free. The same problem occurred. It worked for a few days, but then the system stopped working. The only way water would flow is if you loosened the first filter by 1/8th of a turn, but then it also leaked. So the system is inoperable. Save yourself the time and money and look elsewhere.

About a dozen years ago I installed a new faucet on my sink and at the same time in a water filter. That one had a plastic "T" with a larger diameter, so apparently I had installed a larger diameter pipe set up to the sink, to fit the adaptor that came with that filter. Basically I have half inch copper coming up through the floor, shut offs under the floor, and after installing their plastic "T" I ran half inch up to a reducer just before the sink faucet. Ordered this, not really remembering what I had to do last time. So this is designed for a much smaller diameter pipe than the 1/2 inch I had. I went to the local hardware store, thinking I would get a reducer to go into this filter's "T" and then one the other way to go back up to the larger diameter up to the sink faucet. Either they don't make them, or the hardware store did not carry them. So what I ended up getting was a "shark bite" push on shut off, the one side fit the "T" and the other side slid onto the copper pipe I had to just cut the previous fitting off of. Then was able to remove another fitting, and a little connector pipe I had, and get it all together, not much wiggle room, but just enough pipe to make it work. But I also read that to replace the filters, you are supposed to shut off the water, so bonus, now I have a cold water shut off under the sink (previous was in my basement). I did have one of the little plastic pipes leak, trying to attach it to the "T" so I ended up using some of the parts (like the nut and washer) from the attachment I bought and it is holding. I also added Teflon tape to all the attachments, just to be on the safe side. So tools I needed to install mine included two adjustable wrenches, I would like to tighten it up a bit more so need to find a basin wrench, a screwdriver, dill and bit to mount the filter holder, a pipe cutter, a roll of Teflon tape, and a lot of patience. I am not a plumber, but I can do most of your basic home plumbing projects, up to sweating pipes. Not pretty, not fast, certainly not a professional. Depending on what you have under your sink, your own skills and confidence, this may or may not be a project you want to take on yourself. I imagine most real plumbers could do it much quicker than I did. But it is now in, working and not leaking. The base is a bit smaller than I would have liked. I used a hole in the sink that could be a sprayer or soap dispenser. It works but have to get the faucet lined up just right for it to cover the whole hole. My wife prefers filtered water, and she said that it tastes good. Honestly I can not tell a difference, but happy wife, happy life. We have city water, but about every other year get a notice that they found something in the water that is not supposed to be there, so while maybe unnecessary, it just adds a level of protection for our drinking and sometimes cooking water. Flow is slow, but no slower than our last filter. It is slower than our faucet, but put a pot under it, give it a minute and it does fill up. Our water pressure is not super high, so we are used to just giving our pots and water bottles a few minutes to fill up. All in all, apart from the install, I am happy (so now that it is installed, I am happy). Just look at what you have below your sink and be prepared to make a trip the local hardware store if not going to screw right onto your piping.

This was easy to install if your sink has the hole already. Filter works and tastes great and no plumber needed. I did it by myself. I did have to go get a different part for the connection due to my sink.. but I figured it out relatively easily.

**Update I was contacted about the issue I had and long story short they have fully refunded my money. It was quick and no hassle. I give them 5 stars for great customer service! I spent a good amount of money and what I thought was a quality filtration system. I got it all installed, followed all the directions check for leaks. Everything was great. Walked away and it came back to see how it was doing and I heard a pop and water going everywhere. It turns out on the quarter inch Hose they give you a plastic compression fit instead of a brass compression fit. For a measly couple of bucks on a very expensive product you guys cheap out, the fitting came undone, water went everywhere, causing me damage to the rest of my sink area, as well as a controller box for my faucet. I do not recommend that anybody buys this product. I would hope that somebody from the company would reach out to me and offer me fair compensation.

The most complicated part of installing this was drilling a hole in my granite countertop. I did some research and bought the right kind of hole saw for granite and made the 1/2 inch hole. After that it a simple matter of following the directions. I messed up the compression fitting the first time, but read the instructions more closely, watched a video, and got it all working. I picked this based on a recommendation from the wirecutter, and I specifically went for the high flow options. Be warned that it is still a slow stream of water (as I expected) so you need to be a little patient filling up a larger glass of water. The water tastes great, I love not have a pitcher filter on my counter all the time and I love not having to refill it. I live in the hot desert with thirsty teenagers and it felt like I was filling that thing 100 times a day. The pitcher filter also got gross after a while because we have hard water. So far this is a nice, tidy addition to the kitchen that I am happy with. I also set up a 6-month subscribe-and-save for the filter replacements (that's the recommended interval) so I won't have to keep track of the filters--I'll just replace them when new ones show up at my door.

I have mixed feelings about this filtration system. I really want to like this system but there are a few things holding me back from a 5 star review. Pros: - Water tastes great. - Great filtration for the price, I feel like the filters are high quality. - Installation was a breeze, instructions are very clear. Cons: - The bluetooth feature is a total gimmick. This feature only exists to allow the app to detect the presence of the filter. There's no water consumption or actual filter life data being transmitted back to the bluetooth app. Once the app detects the bluetooth signal you're asked to label the filter location and the date and time in which you installed it. Now why would you need to provide the time and date you installed it? Because...as I said, the filter doesn't actually receive any data from the filter, you have to provide the date and *THE APP* will calculate the expected life based the installation date. This is total BS and in my opinion is Aquasana trying to pull one over on it's customer base. - Push connectors, for the price I would have expected threaded fittings. I would recommend a leak sensor with automatic valve shut-off, unfortunately, this will eat up a good portion of your savings (not all!). You should consider this when looking at the $500 competition. - I bought two of these systems, one of the systems I received had a leaky pre-filter. Amazon to the rescue with their stellar returns policy, but the %50 failure rate out of the box doesn't impress me. In summary, I know this filter system will bite me in the biscuits at some point, it's just a matter of when. I've got enough technology in the house to absorb the risks and I don't really miss the bluetooth functionality (I noticed it had it after I bought it). Update: Replaced filters and water started spraying from the filter canisters. I thought the o-rings had deformed. After a little troubleshooting I noticed that the beginning of the treads on each canister had been slightly rounded(?) off. I happened to have a spare set of canisters to compare. See picture, I used the supplied filter wrench to tighten the caps on the canisters. In doing so I over tightened it which caused the thread the round off a tiny amount. That’s all it took, hand tighten only folks.

I have purchased this filter numerous of times for my folks for their Water Filtration system they have always been more than pleased with this replacement. The filter always works and I have heard no complaints about installation. A great product and a great seller. 5 stars for everything!

Good product so far. Was easy to install. The taste of the water and of the coffee improved dramatically, even though our municipal water is of excellent quality.

I got a plumber to install the unit who ran twice to the hardware store to get parts. Though I paid for the service, I am glad and happy with the end result. I trust aquasana because I had been a customer for at least 10 to 20 years with the counter top unit. I upgraded to under counter because it leaked. Only wish is that it should be made in USA.

This was easy to install. The tee valve could have been a better quality as there were metal shavings in it. Cleaned it out and no other burrs observed so used it. The tee valve does not have a shutoff. You need to read the installation steps to find what size drill bit to use to make the hole in the counter. It would have been nice to have a legend to tell you what specific tools and sizes to use as a quick reference or for those that may be a little less technically inclined. Otherwise, its easy to install. Flavour of water is great. I always liked my jug water filter from a major brand but this is way better. Ran 20 minutes after install before use per instructions. No weird aftertaste and no odours. Added a tee to connect my fridge water and ice maker. Same great taste from fridge as well and I don’t need to use the fridge filter. Has the most certifications that I saw for an under counter filter system. Highly recommended!

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