FS-TFC 5-Stage Reverse Osmosis Water Filtration System 100GPD Fast Flow Plus Extra 4 Filter for Free (FS-RO-100G-A)

I installed the FS-TFC 5-Stage Reverse Osmosis System under my kitchen sink, and the results have been outstanding. The water tastes noticeably better — no chlorine smell, no metallic aftertaste — just clean, refreshing water perfect for drinking, cooking, and even brewing coffee. Setup was surprisingly simple. The instructions were clear, and I didn’t need professional help. The compact design fits easily under the sink, and the 100GPD fast flow rate means I never run out of filtered water. I also appreciate the extra set of filters included — a thoughtful touch that saves money down the line. The system removes up to 99% of contaminants, including fluoride, lead, arsenic, and heavy metals. The wastewater ratio is about 3:1, which is standard for RO systems, and the filters last 6–12 months depending on usage. If you’re looking for a reliable, affordable reverse osmosis system that doesn’t take up much space and delivers excellent water quality, this one’s a winner.

I’m not often this impressed, but I gotta say I AM with this under-sink RO system! I bought a house in the country thats on well water, and while the water tested great, its hard water with a lot of calcium in it. The calcium deposits leave behind a a grainy/crystalized powder that ruined a Kurg coffee maker and an Ice Maker and we also discovered that my wife has a sensitivity to the heavy calcium and it has caused some health issues for her. I priced out a whole home system, but thats out of my budget. I discovered these under-sink systems that I can install myself and were WAY more affordable. I chose this system because it was the most compact 5 stage RO system I could find. This kitchen hasen’t been remodeled since the early 90’s and i have limited space under the sink. Installation was EASY, took less then 2 hours, and the kit contained everything needed (except for a few basic hand tools; drill, crescent wrench, and a few wood screws). After turning the water back on and checking for leaks (none) it took about 2 hours for the system to fully fill up (my well is set to 45/80 psi), then a quick system flush…. And now we have beautiful, clean, healthy RO water, and it tastes Great! Good for my appliances and healthier for my wife. Home Run! All from a kit for under $150.00 AND it came with a set of replacement filters to!

I had a new expensive Max Water unit that split and flooded my kitchen. Amazon would not stand behind it. I ordered this unit and it was a pretty straight forward install. Not 1 leak from install. You do have to make sure the tubing is inserted all the way or the fittings will leak. I added a re-mineralization cartridge on mine and the taste of the water is incredible. My coffee taste better as well. I am very happy with the smaller size.

We installed this system, and the feed connector broke so I bought an APEC System ( only cuz it was the only system that arrive in a few hours ) and I was able to replace the feed connector from the APEC system and that worked with the FS-TFC system and I continued to use the rest of the FS-TFC parts until we started to draw water from the new faucet. At this point, the second thing that didn't work was the connector that was applied to the water tank. We couldn't get it to stop leaking so I grabbed the connector from the APEC system, and it immediately stopped leaking. After we uses the FS-TFC filters for a while, I'll just swap out the filter pack from the APEC system so that I don't lose the money that I spent on the FS-TFC. ( get some use out of it at least ) I'm happy that the parts were interchangeable and I'll try the iSpring system next. I'm not sure which one is the best and I only ordered the APEC because it would arrive the same day and I wanted to finish installing the RO system and this was my first time to install the system. Clearly, other systems use more quality parts and cause less of a headache.

I purchased this system for our family of 3, plus pets and plants. I installed it under the kitchen sink along with a couple of other components, but I quickly learned a few things to help others with if its your first time or if it's been a while. I broke it apart into sections so skip to what you need or read all three. It's not too overly verbose :) The sections are - this product kit itself, the installation of the system, and optional components that will improve your system's efficiency, meaning you waste less water through the filtration process itself. 10 second version on how RO works: High pressure water is prefiltered and then pushed into an RO membrane - which is the reverse osmosis filter, with a pore size of approximately 0.0001 micron. That's nerd talk for super filter. After an additional filter, it can go right to the spigot for drinking, or you can run it through a mineralizer first - that's what gives it that nice, mountain spring water like taste. Notes on the RO Kit (Reverse Osmosis): Great price for the components, extra filters is great. The TANK - please DO NOT adjust the pressure by pushing in on the bike tire looking relief valve at the bottom of the tank. It's pre-set to the right pressure from their factory. It uses a bladder to help pressurize your water in the tank to deliver it more quickly to the spigot. --There is a connector piece with blue release tabs - the rest of the normal connectors are white. The blue one is your ONE WAY CHECK VALVE, and should be installed correctly already. I moved the position of mine when replumbing to be on the outlet side of the 5th filter. --The filter 'brackets' for mounting them are pretty flimsy, consider mounting or zip-tie into place. --- This Kit does create a lot of condensation on the bottom three filters, enough so that I had to make a drain trough. --- There IS an automatic shut-off valve pre-installed onto the mounting panel. It's the white valve with 4 lines coming out of it. This NEEDS your tank setup properly to work, as it uses the tank pressure to know when to shutoff water to the system. INSTALLATION: PERMEATE PUMP - this is the miracle worker, it uses a clever diaphragm system to increase the water output of the system and does so by using the discharge waste water pressure. This makes them at least a 1:1 efficiency or better. Without it, it produces 1:3 (water to waste ratio). I added a remineralization filter to mine then out to the spigot. I also added a 3-way splitter to a shut-off valve for my ice-maker line, which I installed on the outlet of the mineralizer right before the spigot. WITH A PERMEATE PUMP, ON 85psi INCOMING WATER PRESSURE, IT PRODUCES A LITER OF WATER IN 3 MINUTES. That's 125 gallons per day, a 25% improvement in water production with a decrease of 250 gallons of waste water, per day. Obviously you'd have to run it 24/7 for that, but you get the idea. CONSIDER ADDING: a permeate pump, a psi gauge on the incoming side of the water in your RO system, a remineralization filter (put it inline after your last filter), an additional water shut off valve, and a mounting panel to attach all the components to before putting the mounting panel in its under-sink position. Last thing - make sure to leave room under your sink for your water tank. EDIT: 4 months later, works great and we love it. The cats love the water in their fountain, and we enjoy not carrying 5-gallon jugs of water in from the car every weekend. :)

I got tired of drinking bottled spring water which I doubted the source! So, I invested in one of these filters knowing that it has been filtered in my very own home. The water comes out fresh, crisp and clean! I did the 6-month filter change and let me tell you the number of substances that are filtered is amazing! In the first picture you can see the new filter compared to the old filter. I poured the water into the cup to get a better look at it. By the time the water goes through the remaining 4 stages and reaches the tap, the water is crystal clear and fresh. I highly recommend it if you are looking to improve your water quality and remove harmful contaminants.

prefect

I had a problem with one of the plumbing fittings not being compatible with our thread fittings initially. The company was very prompt & good with their response . I purchased the fitting that would work for us & they reimbursed me for all the costs I incurred . I would highly recommend this company to all. I needed the RO unit as we have very hard water & need to reduce the mineral content for our humidifier. Works like magic! VERY HAPPY