Aquasana Under Sink Water Filter System - Reduces PFAS, Lead, & Chlorine in Drinking Water - Under Counter Claryum Filtration for Kitchen - 3-Stage Max Flow - Oil-Rubbed Bronze Faucet - AQ-5300+.62

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.

January 2023 update. Down to 1 star but deserves none. Leaked on last filter change in December 2022. Outside 1 year warranty, no help from company (per company support). Ordered new unit. Leaked like an open faucet on installation. Not an installation issue, am a pro now. Returned and ordered 3rd unit immediately, and installed it without any issues or leaks. Nice! Out of absolutely nowhere, for no reasons at all, it started to leak 5 days ago (sweating and few drips a day), and it is getting worse. Called Aquasana support phone - emailing back and forth got me no where - was on hold for at least 30 minutes when I hung up. We are going back to Watts premiere. That's is what we had before the kitchen reno (and I couldn't find Watts system in first year of pandemic). Never had issues with Watts, that system lasted 6 years. 9/29/21 update. -1 Star Filters don't last. Filters that came with unit latest 8 months of regular use, then flow cut down by 80%. Should have changed at 6 months, but was happily surprised it lasted 8 months. Changed the filters and after 3 months of lower use than usual the flow is back down to 80% of normal flow. Now have to install 3rd set of filters in 13 months. 3-month life for filters in light use is too short and becomes too expensive long term. There is no way the filters we used up or went bad in 3 months. We used to have a Watts Premier Pure UF-3 and are seriously considering going back to it if this new set of Aquasana filters doesn't last about 6 months under normal use. 8/20/20 update. +1 star. Leak issue was installer not tightening second filter properly. No leaking at all. Still not used to handle backwards to open -1. Color issue is permanent -1. I recommend if you can live with these 2 flaws. ------- Initial 7/20 review: The water taste is fine, although we are still debating if it tastes better than our pitcher filter. I think it does. There are a couple problems. First off, the faucet handle turns unintuitively (when filter faucet handle is installed on right side, the handle starts in down position and rotates up towards the back wall a quarter turn - is this a left handed faucet? Right handed people hold glass in left hand and turn faucet with right hand, no? We had other brand for years that was set up as you'd expect. -1 star for weird open/close faucet configuration). Then, in brushed nickel, the faucet handle is half chromed and doesn't match the faucet in brushed nickel. Ditto for counter seal cap ( -1 star). I would like a different looking handle that opens the right way (top to bottom). Lastly, stage 2 has been sweating and water is pooling in cabinet. This is a new install so I am trying to figure out if is is a filter tightening issue, filter canister seal issue, or filter holder issue, but it is not an install or connecting tubes issue (-1 star). Initial 8/8/20 review starts at 2 stars. Will bump up if things change. I did lots of research and settled on this expecting a 5 star product. Disappointed.

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.

Such a nice surprise. I bought the 3-stage Max Flow system two years ago, so it was well past warranty when it started leaking last week. I wasn't thrilled that it stared leaking, but that stuff happens. I'm somewhat handy, but I couldn't figure out whether I needed a new cap, some tiny gasket, or what, so I called Aquasana hoping I could describe the problem and they could tell me what the most likely point of failure was. I was expecting brief call with a rep and hopefully a clue about how to proceed. What I got instead was an in-depth troubleshooting session with a very knowledgeable woman (Dolly) that included switching my audio call to a video call and me switching out various caps/filters/housings until she determined the problem. With the warranty long expired, the parts I needed ran about $45 including shipping, which seems fair. What impressed me was the clear dedication to service on the part of this company. They had a whole system set up to allow their agent to work through the problem with you on video, right there during a random phone call. And there wasn't really any catch: she did a very soft sell on their replacement subscription program, which I didn't opt for at the moment. It makes complete sense to have such a robust customer service setup, since they probably make most of their money from replacement filters, but it was such a pleasant experience to deal with a company that understands the value of keeping a customer happy. Seems rare these days, which is why I was moved to write this review ten minutes after our call. Well done, folks.

This has been one of our better "home improvement" projects of recent months. Previously we greatly underestimated the greater comfort & convenience, lower cost, and lesser environmental impact of having filtered water on tap. Previously, we bought large quantities of bottled water -- and threw away large quantities of plastic. Occasionally, we used the filtered water tap on our refrigerator, but its low water flow and awkward location make it suitable only for occasional dispensing of small quantities. From the fridge dispenser, it can take several minutes to fill a coffee carafe, all the while holding the growing weight of the container under the tap. This is both time-consuming and uncomfortable for my arthritic hands. We considered the pitcher approach, but balked at the hassle of continually refilling and carrying a jug back and forth to the fridge -- not to mention the lack of space in our fridge and my aforementioned discomfort in handling heavy containers. Plus, in my research I learned that pitchers don't filter as thoroughly or as quickly as plumbed-in filters. Plumbed-in seemed the best solution for us, and we haven't regretted our decision a bit. We've used the heck out of the Aquasana ever since we installed it. Aside from being more convenient and cheaper and faster per gallon, it's noticeably improved the taste of our drinking water and everything we make from drinking water, such as brewed coffee and tea. Installation was easier than expected, even with the added necessity of drilling a hole on the top deck of the sink to mount the dispenser. (We opted not to use the existing hole currently used for a soap dispenser because it would put the filter tap on the side of the sink that's often filled with drying dishes.) Though the instructions suggest hiring a professional if drilling is required, we found it not to be a difficult task if you plan carefully, measure twice, and have good quality tools. After mounting the dispenser, the rest was relatively easy. The only hiccup was ensuring that the inlet and outlet hoses were firmly inserted all the way into the filter. Because the hoses are small, I was hesitant to push them as hard and deeply as you really must to get a tight seal. My first few efforts resulted in water spraying everywhere when the water line was opened. But after finally getting the lines properly seated, we haven't had any problems since. Several months later, we're still happy. It's been well worth the initial expense and installation. It will be interesting to see how long the filters last, given our heavy use of them. But even with their relatively high cost, I calculated we're saving about 50 percent on per-gallon costs (10 cents/gallon vs. 22 cents) and we're getting our water about 10 times faster (1-1/2 minutes per gallon vs. 14.5 minutes).

I've used the Aquasana 5300+ for 2 years now. To start, the pros: I liked the NSF certification and the fact that the filters seem to handle the widest range of contaminants. I live in San Francisco, where our water quality is already exceptionally good. I bought a filter to ensure that contaminants along the water delivery route (e.g. our building pipes) aren't coming in since we now have a baby. Despite reading all the reviews of leaks happening once you replace your filters for the first time, I naively figured it was likely something I could figure out and ensure wouldn't happen. Fast forward to today, every time I've replaced the filters, there have been leaks. I've done the research, watched many YouTube videos, browsed Google/Reddit suggestions, and have tried all the suggestions that worked for others. Don't overtighten, loosen a tiny bit after hand tightening, overtighten anyway, use a ton of teflon tape on the sump screw threads, replace the sump o-rings because they wear out or compress. No matter what I do, this thing leaks in one or two of the three filter canisters or sump heads one way or another. These are NOT big leaks - most often they only drip every few minutes. But that's completely unacceptable. I don't mess with water damage, potential mold growth or damage that may go unnoticed. I can't keep looking over my shoulder wondering. The time I've spent each time I've replaced these filters has not been proportional to the benefit/value I get from this system and that's why I've rated it as such. I initially bought this system because hey, save plastic, only replace the filter material itself, not the entire sump/body. Great idea, poor execution. Based on what I've learned, the filter replacements should include replacement orings (both the large one as well as 4 small ones per filter). The fact Aquasana does not provide these is deal breaking in my opinion because I expect to use an under sink water filtration system for years, ideally 5+. I take good care of the products I buy and the canisters look like they're built to last at least that long. So far I've identified or read about a few main/recurring issues: - the orings wear out and you have to replace them at your own cost, they don't come w/ the filter replacements (but a new battery does because they want to beep at you to buy more) - the manufacturing tolerances for the filter heights are too wide and can cause the filter to block the flow of water. Supposedly Aquasana tells you to put a quarter at the bottom of the canister to solve this. First of all, I want my water clean, why is the official guidance to add a dirty metal coin? - the prefilter sometimes blocks the flow of water if you turn it until it clicks into place. You may have to loosen the prefilter canister *just a bit* to have water flow through. - all of this tinkering also wears on the orings in a short amount of time, so while you're troubleshooting the system, you might actually be making them worse. - I've also read that the main plastic housing under the Aquasana cover can crack, though I don't think mine has yet. In the end, I cannot recommend this system because it feels like a massive waste of time monitoring the under sink system for DAYS after replacing the filters. Yes, each time, I've managed to do some random combination of things that ends up with the filter no longer leaking. But in those few days, I have to take 1/4 of the items out from under the sink, leave the cabinet door open, have rags nearby, and see how quickly water accumulates if there is a leak, where the leak is coming from at either the canister or sump top. I have to tell my wife to work around this mess and I have to close the door when my toddler is home while remembering to monitor the origin of leaks. My time and your time are valuable and I'll be looking for another system once I do some more research. I'm bummed because the NSF certification was a big selling point for this system and the flow rate has been fine when it works. I've read that Aquasana charges shipping to resolve this past the 1 year warranty (sometimes even w/in warranty), which of course is when most folks will run into issues, so I did not bother with this. $10 shipping = $10 savings when I move to another system. I don't normally take the time to write such a long review, certainly not a negative one, but I should have heeded all the other reviewers that complained about leaks and not naively assumed I'd be able to figure it out. I've rescinded recommendations to friends due to the headache when it comes to replacing filters. I don't have any issues with Aquasana as a brand, but considering this seems to be a popular model, please consider providing the necessary orings to replace with filter packs (instead of the battery, if that cuts costs), fix your manufacturing tolerances so I can expect proper functionality when I put replacement filters in AND click the canisters into place *all the way*, and stand by your product. You've effectively sold us lemons and told us to fix your issues with quarters.

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!

I installed it to my new house to remove the refrigerator water line and it works great. The water taste is good. Before I used it, I worried about the water flow rate. Normally the filter system gives poor flow rate. But its flow rate is great and I'm very satisfied with it.

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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