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

The SimPure T1-400UV was very easy to install, even without plumbing experience. The water tastes fresh and clean, and the tankless design saves a ton of space. The system runs quietly and reliably every day. SimPure’s customer service was fantastic, quick, friendly, and very helpful. Overall, this is a high-quality, worry-free RO system with UV protection. Highly recommended!

I tried earlier to write about my experiences and evaluation of the SimPure T1-400 UV. I thought that I had submitted it, but I don't see in the reviews, so I'm trying this again. My apologies if it's a duplication.Anyway, I want to share this with anyone interested in self installing this RO system. First let me say that we're very pleased with the customer support we've received from SimPure, and love the results of the water we're enjoying from this unit.I ran into an issue with the SimPure waste water drain saddle that required me to entirely re-plumb the existing P trap to accommodate it. The problem arose because the drain saddle needs a straight piece of ABS tubing to mount it to. I wish SimPure had an alternative drain attachment that was simpler like my old RO system that allowed for more flexible mounting.A more serious problem came up when I installed the feedwater valve. When I turned on the existing cold water valve a slow water leak developed above it coming from the feedwater valve. When I uninstalled the feedwater valve to inspect it, I found that the flat washer had become damaged. I suspect this occurred when I rotated the valve to put the handle in a more convenient position. I contacted SimPure Customer Support and they offered to send my a new valve kit. However, before they sent me the kit I was able to locate a replacement washer at my local Ace Hardware store. I purchased a 79 cent silicone rubber washer that was almost an exact match to the damaged washer. It was 17/32" OD flat faucet washer, Danco brand Part No. 35063 B. I lightly lubricated the new washer with Dow Corning 111 Valve Lubricant before installing it. This time no leaks!After flushing the SimPure T1, I compared the RO water to my city water. City water TDS = 289. SimPure T1 RO water TDS = 2. A very impressive reduction! City water pH = 7.2; SimPure T1 water pH = 8.4.My wife and I love the neutral taste and odorless smell of the SimPure T1 water. I also like the idea that it is UV treated to reduce microorganisms that might be in the system. I do wish that the output were a bit faster, but it's still adequate for our needs. All in all, I think that the SimPure T1-400 UV deserves the 5 thumbs up that I'm giving it.

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.