iSpring RCC1UP-AK, 100 GPD 7-Stage Reverse Osmosis Under Sink Water Filtration System with Boost Pump, Alkaline Remineralization and UV Filter, Patented Top-Mounted Faucet Design for Easy Installation

Nice product! Good luck trying to mount and maintain this entire system under your kitchen sink when you likely already have an insinkerator and considerable drain plumbing under there. Might manage to get the main unit under the sink, with little to no working room for maintenance, but the tank is more than likely going to have to go somewhere else.I installed the main system and tank in our basement, directly under the kitchen sink, works great. See photo.To keep it all as close as possible to the sink upstairs I wound up suspending the tank from two floor joists, in one of those galvanized tubs you might use to wash your dog.You’re likely to need extra lengths of 1/4” RO tubing to make a basement installation practical. Measure the scene and fully grasp the detailed instructions before you get started, to insure you won’t be left waiting for Amazon to ship in the addition tubing or fittings you may need for a basement installation. Your big-box home-repair outlet likely has little or none of this stuff.A basement installation is not an afternoon project if you haven’t worked out all the installation details beforehand, but since the work was 90% in the basement, I wasn’t occupying the kitchen at length.Like I’ve said, nice RO system, and my iSpring customer support person, Sean, helped get it right.I’ve always been conscientious in keeping us supplied with good drinking water. This iSpring system is giving me 21 ppm purity (including the replenishment of enough minerals to keep me from worrying). I’ve worked in water purity enough to feel this system is the solution to any concerns regarding the nasty stuff that could be left unhandled in city water out of the tap (188 ppm).I previously got RO water at the local market (8 ppm) for 49 cents a gallon (including toting gallon bottles there and back every other week). No more! Today I have all I want at the turn of a dedicated RO water valve at my kitchen sink. And this seven-stage system has a final U.V. stage that should kill any latent organisms.Consider as a baseline that distilled water at 3 ppm (home-distilled or from the store) isn’t for drinking until it’s remineralized, to be healthy. This is as good a solution as I found on the market, and reputable.My final words are…do your research and know what’s out there and why such a system could be workable and easy to live with. Go with an outfit, like iSpring, with a reputation. Check out reviews and articles online before you fork over serious money for some no-name system.My system has been running for a few weeks now, and I’m already comfortable enough with it that I’ve bought replacement elements for next year.Just an aside FYI for those making themselves slaves to stand-alone humidifier units requiring replenishing spent humidifier wicks costing an arm and a leg all through the heating season. I’m using my RO system water to refill the humidifier, so far so good. Hoping I’m going to eventually pay for this RO system in saved dollars on humidifier wicks that can cost a fortune themselves for a single winter.Have fun with it and drink water you can count on, and test it with one of the affordable TDS meters on the market.

PRODUCT: I tried a few other R/O systems and this one is as good as it gets for residential. I'll explain. If you really want high quality , safe and delicious water to consume then you have to have the 7 stage system at a minimum. An R/o system is essential because not only will your water be pure but when combined with the UV light you are now essentially addressing everything that can be wrong with water. Your handling heavy metals, viruses and bacteria. We all can buy a carbon filter and such but they do not protect you against the real issues with "bad" water. You need the whole system to have the highest quality water possible. I will get to one other VERY important feature that this system has over the others but let me make one more point. This system has the common industry filters, then combines the R/O and UV to address the very small micron size particles and of course they have filters that add back essential minerals because pure unmineralized water is actually bad for you. Pure unmineralized water wants to attach to other molecules and it will do that by stripping your body of minerals such as calcium. Pure water is actually a very good solvent. So re-mineralizing water is not just about adding taste. You shouldn't want your water to read 0 on a TDS scale. The important part I wanted to mention was this system comes with it's own built in water pressure booster. This is important because the proper pressure is needed to make an R/O system work properly and to minimize waste water. An R/O system can not do it's job correctly if the water pressure isn't within the range of the specific R/O system you are using. Since this company knows exactly what that pressure should be, because it's their equipment, the booster pump delivers the proper operating pressure at all times. This water is simply a pleasure to drink. SUPPORT: The seller was fantastic to work with. Like I've stated in the past I've tried these systems before from other companies, and my opinion of good water is that it should have 0 after taste and almost feel like air going down. You should taste nothing as hard as you try. Well when I first put in this system and ran through all the startup protocols I found I wasn't getting the taste I expected and the TDS read really high. To put it in perspective the poland spring water bottles I tested in the 16oz plastic size came to about 30-35 TDS very consistently. Almost always 30 on the dot. So remineralized water from an R/O system should not be above that in my opinion because then water starts to have a "taste". Mine was above that and it had a distinct metallic after taste. I contacted the seller, explained how the install went, completed the protocols they asked me too and while still not completely happy they shipped me additional parts to swap out. All this happened within just a few days. So between response time, being empathetic to my problems and providing a tangible fix these guys we're great. The only reason I wrote this long review is because I remember my journey from just learning about these systems and what to expect from them health wise. And if I can compact as much important information as possible maybe your journey into picking the right solution for yourself can go quicker and less expensive then mine. Also any seller, especially on Amazon that makes a customer fell like their issue is super important deserves the accolades that I am happy to give.Between this seller and the product you will not be let down. Good luck everyone and a thank you to other reviewers that helped guide me in my own confusing purchases. If you reach out to the seller or customer service ask for SEAN. He was the best!

I bought this system 09/18/2020. My brother and I both bought the same setup and have been using it everyday for almost 5 years. The TDS stays low (of course this is based off of my incoming water). My brother likes the Alkaline Filter taste. My family is impartial to the difference. It comes down to personal preference. The RO system is a great product and the company is very reputable. Quality and service is top notch. I had an issue with my unit since my cistern ran dry and my unit stopped working to no fault of the unit itself. Shout out to Nick in Support who knows his stuff. Nick was able to get me the parts I needed to get back up and running. I would highly recommend buying the 100gpd setup for a larger family. This allows us to not have to wait for the tank to fill up back as well as getting 1.5 gallons of water to every gallon of waste. Our family of 6 uses water for cooking, ice maker, water dispenser, and water jug fill ups for school. I have done a few upgrades. I installed a larger tank, used a 1/4" to 3/8" JG push adapter to size up my line after the UV filter (last stage). My water line going to my refrigerator is 40-50 feet away and I didn't like how long it took to fill up a glass of water. I added a Aquatech Diaphragm Booster Pump that is you can hold in your hand. It has a built on pressure switch (60 psi). It is connected to the line going to the faucet on my sink and the line going to my refrigerator. Talk about water pressure. I would not recommend another company. iSpring build quality products, filters, and will stand behind their product 5 years later. What are you waiting for? Buy it now!