SimPure T1-400ALK Tankless Alkaline Reverse Osmosis Water Filter 400 GPD

I ordered the SimPure ROULP-3012-400-T1, to install as our main filtration unit in the kitchen. With its capability to remove over 99.99% of more than 1,000 contaminants—including harmful viruses, bacteria, microplastics, and chemicals like PFOA/PFOS—this system offers peace of mind for anyone concerned about water quality. The comprehensive removal of heavy metals such as lead and arsenic makes it a particularly compelling choice for households in areas with questionable water sources. One feature that impressed me is the alkaline remineralization capability. Not only does this system effectively purify water, but it also enhances its quality by restoring essential minerals such as calcium, magnesium, and potassium. The result is an alkaline, mineral-rich beverage that tastes refreshing and contributes to better overall health. Unlike some ionizers, this system delivers a higher pH with no chemicals or heavy metals, making it a safer option in my opinion. The inclusion of a UV sterilizer is another highlight of the SimPure R/O system. This automatic component eliminates bacteria and other microorganisms, ensuring that the purified water remains uncontaminated. Moreover, the tankless design is a game-changer—it not only maximizes space under your sink but also provides fresh water on demand, further reducing the risk of any secondary contamination. With a production capacity of up to 400 gallons per day and an impressive pure-to-drain ratio of 1.5:1, this system is undoubtedly more eco-friendly than traditional reverse osmosis systems. The efficiency in minimizing waste while providing high-quality purified water is great. Installation is fairly simple and the instructions are detailed, making installation time right under 30 minutes. This system is so much easier with the included pump, eliminating the need of a bulky tank. While the system enhances the pH level of filtered water, the Total Dissolved Solids (TDS) won't reach 0 ppm. If you are looking for lower TDS values, look at the SimPure's T1-400UV option. The SimPure ROULP-3012-400-T1's ability to provide not just purified water but also essential minerals makes it a worthy investment for anyone looking to improve their water quality and overall health. I highly recommend it!

I’ve had this system for about two and a half years now, so I figured it was finally time to leave a review. It’s worked really well the entire time, and most importantly, the water tastes great. One of the reasons I chose this model is the alkaline (remineralization) filter, which adds minerals back into the water after the reverse osmosis process. Just keep in mind that because of this, you should not expect a zero TDS reading. That’s actually the point. I personally didn’t want zero-TDS water and prefer having the minerals added back in. I also really like the tankless design. My previous RO system had a storage tank, and I much prefer having the water filtered on demand rather than sitting in a tank. This system does have a pump, so it needs to be plugged in, but that wasn’t a big deal at all with my setup. One tip after changing the filters a few times: I’ve found it much easier to take the whole unit off the wall, lay it on its side, and change the filters that way rather than trying to unscrew and replace them while it’s mounted. Overall, we’ve been really happy with it. Great-tasting water, reliable performance, and after over two years it’s still going strong. 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.

See Update Below Original Review: Why is there no option to ask questions about this product like there is for most other products on Amazon? So I have to ask my question in a review because their customer service rep said to just not use a gasket, which we know is going to cause major leaking. The Sim Purewater water valve assembly will not seal to our under sink cold water shutoff with the provided gasket. Gasket collapses when nut is tightened and falls into the hole, because the assembly nut bottoms off on our shutoff valve before the nut can make a seal. Our cold water shut-off shank is too short for the Sim Pure valve assembly. If there was a thicker gasket, or a thinner water valve nut on the assembly, it might work. The gaskets are not compatible with our Shark shut-off valve nor the other two valve brands we have in the shop. Anyone have a solution? Update 6/14/23: We removed the thicker and more rigid packing washer from a new hose bib assembly that we had on hand and installed it in the SIM Pure water valve assembly in place of the thin, flimsy washer gasket that came with it. This worked perfectly to seal the Sim pure water valve assembly onto our cold water shut off valve under the sink. Additionally, the directions state and show to push the Sim water dishcharge tube all the way into the sink drainage pipe; however, the assembly that attaches this tube to the sink drain pipe does not allow the Sim tube to go through the assembly into the pipe (it will only snap into the Sim attachment assembly,) so we had to drill out the assembly hole to make it large enough for the Sim discharge tube to pass through into the sink drain pipe. Just don’t drill all the way into the “snap in” tube receiver on the opposite side of the assembly. Another reviewer pointed this out (thank you.) If you are not super handy around the house, have not regularly done other plumbing projects around the house successfully, and are not a patient problem-solver, we highly recommend that you choose a different system to purchase or that you hire a plumber. We found the technical help available by phone with Sim Pure to be useless. This install was very frustrating and we almost returned the product. However, once installed, we are extremely happy with the system. It is space saving, quieter than expected, the water flow is excellent and much faster than expected, and the drinking water is crisp and delicious. We only needed to do a water flush for 20 minutes and the water smelled and tasted great. However, we do already have a 3-stage whole house filtering system plus a water conditioner where the water comes into the house from the well. Rated four stars instead of five for faulty engineering parts making the install very frustrating and the lack of adequate help via the Sim Pure help line.

I bought this SimPure RO system because I wanted consistently low-TDS water. At first, the water came out around 4 ppm, which was excellent. After only about a week, it started reading around 10 ppm, and now the first glass after the system sits can be as high as 80–89 ppm before dropping. For a new RO system, that is disappointing and not what I expected. I understand some TDS creep can happen with RO systems, but this seems excessive for a unit that is basically brand new. The system is easy to install and the water flow is good, but the inconsistent TDS is a serious concern for me. I am contacting SimPure support and will update this review depending on how they handle the issue.

Great product. This is a buy for sure. Saves lots of space below the sink and easy to install. Water taste great!

I have been so happy with this reverse osmosis system and it was pretty easy to install the system. I only need a tiny bit of help from my husband🙄. The biggest issue was making space under the kitchen sink which I have too much stuff under there anyway, but overall very pleased with it and it REALLY doesn't take up much room at all under the sink. There is also a disposal under the sink too, so was fairly easy to get it installed with disposal kind of in the way. I drink the water everyday and it has a pH of almost 10, so this is exactly what I wanted, and I did a ton of research before deciding to purchase this one. I didn't realize that 3 of the filters are good for 6 months, and the 4th, the "RO" filter is good for 1 year... So now that I'm familiar with which filters need to be changed, and WHEN they get changed, everything is great! I ordered the 3, six month filters, 6 months ago, and somehow I chose a set of three that did not go to my machine... however two of them did. I called customer service asking what filter goes where, as I was confused, and they sent me out the correct filter at no additional charge to me, and they did NOT require me to return the one that didn't go to my system. So I am very pleased with the customer service aspect as well. The water tastes great, and I keep a gallon of cold RO water in the fridge at all times, for this is the ONLY water I drink. Not only do the "humans" drink it, but also all of our pets, baby silkies, and our cat Phoenix. The spigot that came with the system is great because it's tall and you can twist it over to the side and put a big pot under it and fill it up without holding it. The flow rate is pretty fast however filling up a large pot to boil potatoes can be a couple minutes, it's great that it has the tall faucet so you can fit a gallon jug under it as well as big pots and pans, so you don't have to hold them while it's filling up. Overall I give it five stars 😁. Thank you so much SimPure! ❤️

You don't realize how dirty your water is until to you go RO! Recently replaced the refrigerator, but noticed the water didn't seem as "clean/fresh" compared to our old one, also reading reports from out water company although inline with Fed but real close, decided to get RO filter for drinking and fruit/veg final washing. Added the tank as it is connected to both refrigerator and sink on opposite sides of the kitchen. The pipe and fittings it comes with are fine for under sink installations however I purchased extra 1/4 (RO) pipe and fittings (BPA PFAS free they say). Was originally going to install either in basement or closet next to fridge. However, as the fridge needs to pulled from it's cubby out to prevent damaging the doors on the wall, there was enough space to put everything behind it, and also prevent the fridge getting pushed back. (Thanks to the tank). Ran the sink pipe and waste through the basement. Cable tied clean to a cold water pipe to help it cool, connected waste into a vertical sink pipe, will add a T with a shutoff (winter/summer) later to collect waste in outside drum for garden plants (non edibles). Fridge connection was easy as it was already a new plastic pipe so just cut it and added an extra shut off Removed fridge filter (Add TSD to RO - even as new it only took out 10 -20 TDS prior) Fridge works perfect, ice is crystal clear. Before you buy and install: 1) Figure out where you want to put it, it needs a good amount of space, and room to drop filters out. 2) If you can find room for tank, get it and connect the fridge for ice, otherwise what's the point 3) Before connecting pipes make sure they are clean cuts and straight (a very sharp knife works) 4) Make sure you have enough pipe and extra fittings if you install anywhere but under sink(with fridge next to it) 5) FLUSH completely for 20 mins, If you have extra pipe, it might take a bit longer to clean it out (Keep fridge water shut off then flush a few glasses), 6) Check PH and TDS before during flush and after this way you will know it's working and when ready to drink - also smell, parts may have oils from manufacture, keep flushing until it's totally odorless. NOTE: RO is a slow process, the faster it is the warmer the water gets. If it's too warm or too high a pressure it damages the filter membrane. Be patient. We wash all raw veg with faucet water then rinse with RO. For cooking we use RO (sometimes we forget) Complaints from kids - It has no flavor (Chlorine) - add some mint, basil,rosemary - Sink outlet is a bit warm -that's what ice is for For a small investment, feel this is a good health choice. We drink a lot of water (128oz each a day minimum). Most bottled water is RO sometimes with stuff added, (or plastic &chems) this is cheaper and removes pfXs etc. UPDATE 3 MONTHS: 1) No more 'SWAMP WATER' in refillable water bottles. Kids are notorious for only cleaning water bottles when the water is swampy (their definition). This is quite a concern - whatever bacteria was making it through the faucet tap water & fridge filters is no longer present, water bottles remain clean for a very long time. 2) In warmer weather, water at sink is a bit warm so we add ICE when doing final rinse on lettuce 3) Spherical/craft ice on refrigerator slightly off shape (has an added bump on one end), this is due to water pressure. Its a cosmetic thing (a little amusing TBH) Some people have this regardless of filtering!

Just installed it with my husband yesterday. Was not complicated to hook up at all. We didn’t have enough space under our sink so we just used the cabinet next to it and ran the lines through a hole. We had zero issues with the install it was fairly easy with two people. I bought a water tester and the water tested successfully at 0 PPM after I ran it for half an hour as the instructions said. I checked the tap water too just to make sure my device was working and it tested at 36 PPM. The pump is extremely quiet in my opinion, with kids in the house I don’t even notice it unless I open the cabinet door intently. The side faucet it comes with it nice looking and slender. Overall I’m very happy so far with it and I’ll have to continue to test the PPM as the filters age, the little device is only $10 its probably worth getting for maintenance purposes.

I’ve now been using this product daily for 2 years and using water testing devices to verify quality. This product is very good, works well, and produces pure, clean, great tasting water.

Je l’es depuis plusieurs mois et satisfait j’ai installer des lecteurs de ppm entre tout les filtres et je soupçonne seulement le premier de faire une moin bon travaille a moin que mes lecteurs manque de précision je vais revenir plus tard ici a

If you are thinking of buying one I would! It seems to work very well and the few issues I had were taken care of by the best customer service I have had in years. Anything wrong new replacement parts are shipped immediately without question .... truly excellent!

Wonderful product with very caring employees who are there to help you with diagnostics and customer service.