SimPure T1-400UV Tankless Reverse Osmosis System with UV, NSF/ANSI 58 Certified, Under Sink RO Water Filter System 400 GPD, 8 Stage Filtration Near 0 TDS, Built-in Pump, BPA Free, 1.5:1 Pure to Drain

I purchased this system close to 1.5 years ago and I have to say I love the quality of water it produces, the simplicity to replace filters as needed, the tankless feature, and the efficiency in term of waste water versus drinkable water which is 1.5:1 respectively.My city water is TDS is around 270ppm and after I used the simpure T1-400UV, it reduced it to 0ppm for the first 6 months then after it remained steady around 10-14ppm after 1.5 years and on. This is extremely clean per RO standards which is usually around anything less than 100ppm.The tankless feature has the major benefit of saving a ton of under-sink storage space which is already limited from the start. However tankless feature requires the user to flush the system every time for 1-2 minutes if it has not been used for an extended amount of time since the "still dirty" water is mixing with the clean water in the tank due to equilibrium. For the first 1-2 minutes of flushing, the TDS of my water is 50-120ppm then after 2 minutes it stays at 13ppm (1.5 years age of filters). If you always want instant clean water than a RO system with tank is needed. This system can produce unlimited clean RO water on demand once set up without running out as systems with tanks do.After 1.5 years of heavy use, I encountered an issue where the system turns off intermittently. I contacted Simpure and they were very helpful and accommodating even though my 1 year warranty has passed. It turns out from sending them videos that my control box was faulty which they sent me a new one and I replaced (5 minute job) and the system works like it was brand new again. Ellen was the Simpure rep that reached out to me and she was very patient and understanding. Very appreciative of her helpfulness and follow ups.Installing this RO system if very DIY if you watch videos on youtube. Or hire a professional which would cost $$$.Using this system has definitely eliminated plastic/aluminum waste from my home and the water quality is far superior to bottled water now per TDS measurements. Can use RO water for cooking, fish tanks, or carbonated water machines.Below you can see my city water which is around 270ppm , SimPure reduces this number to 13ppm which is extremely clean water. After installation it sits flush against the wall so you have plenty of space under the sink still.Overall I would highly recommend anyone to get this if they are looking for a efficient space saving RO system.

i bought this system to replace an older conventional RO system that was having issues with its pressure tank. I've frequently drained the pressure tank and then have to wait a long time for it to recharge; with this system, there is no tank, and water comes out at the same rate forever!The system is about the same size as the filter module of a conventional system, and is the same to hook up (except no pressure tank!!!). It also runs a WAY less water down the drain, so it is much more efficient. Perhaps most surprising to me was the TDS was actually at 0 for me! My old filter struggled to keep it under 30ppm, but this filter tested right at 0! My water is hard (I do have a whole house water softener), source water TDS is >300ppm.The system does not make much noise to me (yes, you can hear the hum of the motor running when it is running). It feels well built, has an easy-change filter system, and it DOES have UV sanitation (it is much more compact than my previous unit, so it was easy to miss).The ad mentions if you want to attach your fridge ice maker / water dispenser, you would need a small pressure tank they sell separately. I don't understand why that would be needed (and the point of this system was to get rid of pressure tanks), and I hooked my fridge up without it; all works fine.I occasionally fill up a 5 gallon water cooler jug to take into work. It takes just over 15 minutes to fill it, start to finish. My last filter took HOURS to do this. Best of all, as soon as I'm done, the filter is ready to serve other needs at full capacity (with the old system, there would be poor or no pressure for a long while...Wife always complained!)I think this filter has an excellent value, good workmanship, and I wish I put it in long ago!

WHY is it so freakishly difficult to find an Amazon review to edit? Most of the help is either out of date or misses important steps. Whoever planned this aspect in Amazon seems to have had a serious case of dsylexia or some kind of obfuscation disease when trying to put related items together.Update: Heard back from the company. While not yet resolved, it is good enough to restore the rating to 5 stars. For reasons unknown, the unit started to work properly again when I started on the process of uninstalling it for possible return (it is still within the return window).======(updated back to 5 stars, but I prefer not to delete content, but let it stand)Update: Dropping to one star. The unit developed a problem. SimPure have not responded at all to requests for assistance in addressing or diagnosing the issue. Unit is unusable at present.=============We bought the unit that provides pure clean water with no minerals added back. In my testing of it, it delivered on that. The TDS reading was at the lowest limit that my measuring unit is capable of.Installing anything in a kitchen cabinet isn't much fun. This isn't particular to this unit in that regard. It may take quite a while to get it all done, although it is not intrisically difficult.The manual suggests placing the unit within the sink structure. I placed it on a corner of our kitchen island where it is easily accessible from multiple aspects. This turned out to be a good choice for another reason. Water delivery is slow. A cup or kettle can be put on the counter surface, and doesn't need to be held while it is filling.The unit makes noise. To prevent the cabinet from acting as a sounding board, I put some padding underneath the unit and between the fixture to the wall. This results in a level of noise that is useful to let you know it is running. Without the padding, it is rather noisy.As shown, the unit doesn't have a cover for the top. I would have preferred something to have been included that protected the top.The threaded part of the faucet was only just long enough to go through the tile and wooden base. I did not install the upper trim washer, only the rubber one. It looks fine that way.To avoid cracking the tile, a tiny, vertical, pilot hole was drilled between the 4 corners of the tiles. Then a conical shaped abrasive bit was used to wear away the enamel surfaces of the 4 tiles to about 1/2" diameter. Finished off with a combination of masonary and wood bits being careful to ensure it was vertical. No cracks, unit stands straight, all looks good.It needs an electrical supply. You could hook it up to the existing dishwasher outlet with a simple adapter, but probably better with its own outlet.Water without minerals does not have the sweet taste of water with minerals. Totally pure water tastes fine to me. As we use water primarily for tea, coffee, and cooking, it would not have been an issue anyway. We can always provide bottles of water for those that prefer the mineral taste.All in all, it turned out well, and is much more convenient and better performing than the previous filtration. No complaints or problems reported by any other of the household. They adapted to it straight away.