Stokk Tankless Reverse Osmosis System, 800 GPD Fast Flow Water Filter, NSF/ANSI 58&42, 8 Stage RO System, 3:1 Pure to Drain, Under Sink Tankless RO System, Smart Faucet, Reduce PFAS, S2

We’ve had this for over a year now so I figured it was time for a review. This RO water system is amazing. It’s a good price, compact, easy to install, and quiet. Just make sure you have an electrical outlet under your sink. If not, you’ll have to drill a separate hole in your counter to plug it into one of the outlets there. You will also need a power drill for drilling a small hole to connect the drain line to your sink drain pipe, but otherwise they give you everything you need. Just follow the instructions and make sure you run it for 30 minutes after it’s all installed to flush the filters.It works great! We are a family of six (2 adults, 4 kids) and heavy water drinkers. I also make gallon pitchers of iced tea a couple of times a week with it. The PPC filter lasted a whole year before I had to change it, and the RO filter is still going after a year and 3 months. It’s a reverse osmosis system, so don’t expect it to have a ton of water pressure, but the flow rate is better than most systems.The water tastes good. Really, it doesn’t have much taste at all. That’s because it removes virtually everything from microplastics to contaminants to minerals. So if you’re worried about getting enough minerals, I would get some mineral drops to put in your cup.Overall, we love it.

I am not new to under sink water filtration. I have been using them for years. This is my first tankless RO system. I replaced a frizzlife 3 filter water purification system with this Stokk RS1 400 gpd because I needed RO water for my humidifier. I have a matching drinking water faucet and sink faucet so I did not need the included RO faucet. The installation was a breeze as the only thing I needed to do was add a drain saddle connection. The creative water tube connections to this box was a cinch to use. Because of the RO membrane, water output will be slower than your average charcoal filter system, keep that in mind. Most will opt for the faster 600 gpd unit but if you dont want to replace your expensive membrane any more than a once a year, you should stick to the 400 gpd.I dont think the plastic cover on the front control panel is necessary at all. Its already hiding in a cabinet. Stokk does provide everything you need except a drill, 1/4" bit and phillips screw driver. You might also need a pair of kitchen shears to trim the tubing.The included thank you letter is a nice touch, talking about the company's start. Stokk cares about the environment and all the waste caused by water bottles. But looking at the filter cartridges they use, they are encased in some heavy duty plastic. Unlike others that I have used in the past, these do not seem to open allowing you to just remove the old filter and or RO membrane. (Confirmed by watching Stokk's filter replacement youtube video.). Which means excess waste in the landfill that will take decades to breakdown. I would like to see development in this area. Sure its super convenient but not green in the least and kinda makes me wonder if I bought the system.This company has US based support and is from Hong Kong. . Jin Fang Technology has 3 trademarks for Stokk that were filed in 2023. So despite being new to the scene their product is seriously well designed.Stokk S1 series filtration meets the following specifications and is certified by SGS, a global certifiacation company. Certs can be found on the Stokk support website.NSF/ANSI 42Filters are certified to reduce aesthetic impurities such as chlorine and taste/odor. These can be point-of-use (under the sink, water pitcher, etc.) or point-of-entry (whole house) treatment systems.NSF/ANSI 58Reverse osmosis systems incorporate a process that uses reverse pressure to force water through a semi-permeable membrane. Most reverse osmosis systems incorporate one or more additional filters on either side of the membrane. These systems reduce contaminants that are regulated by Health Canada and EPA.For those of you who dont read the included manuals, you can extend your 1 yr warranty for a 2nd year by scanning the QR code found in the last page if the book.

For me, they have a Great Customer service, 5 starts...! I call and hang up after one ring, the calle me back right away...! I wanted to make sure the water quality, so I decided to compare it with the botle of water and it tested, fewest points less than the purifier, but purifier still good water...

Just got it installed and seems to work great. We originally made an error in setting it up. Called customer service. They were immediately responsive. This is the first time having a tankless reverse osmosis. Appreciate the extra room under the sink and limitless RO water. Although it does expell water down the drain I believe the quantity will be far less than the tanked RO system we replaced.

READ BEFORE YOU BUY!!! Installed the Stokk 600 (S 1 Pro) about 4 month ago. The system is lightly used every day. We started to notice a strange taste of the water. I made multiple tests and found very weird results. As many others already mentioned, you must waste over a min of water running before the TDS is acceptable. My city tap water is 150 TDS and filtered water starts with 90 TDS (red zone level), you need to waste a lot of water before you get acceptable 30 TDS. This goes against their claim that it wastes less water. After being off for 2-3 hours the TDS will initially read 90s again. This is very inconvenient when you only want a quick glass of water. You must know about this before buying this wasteful system.