iSpring PH100 Alkaline Reverse Osmosis Water Filter System, pH+ Remineralization 6-Stage Under Sink RO Drinking Water Filtration System 100 GPD Fast Flow 1:1 Pure to Waste Ratio, US Made Filters

This RO system is amazing! Relatively easy installation (which will largely depend on your under-sink situation) with ample support from videos and written instructions. I did it myself in about 4 hours. The water tastes incredible, the tank is a great size for our family of 4 (almost 5), and there's always plenty of clean water available. After using a large drip filter system for the past 5 years, I'm kicking myself for not having purchased this sooner. It's amazing to avoid having to refill the tank and clearing up counter space. I had a parts issue (my fault, not theirs), and John quickly resolved the issue. I'm very pleased with the product!

Pro’sWhat sold me are all the filters are made in America.Well built unit similar to the commercial one I had at my work. Good value for the money. Comes with extra fittings, extra filters if you want to add to the order. Hose and parts needed to install pluse wrench to tighten the cartridges. Everything except the tools to install, common design to fit below a sink.Con’sInstructions are pretty good, but not exactly as well as it should be. 1) hose in instructions show a yellow tube, Blue tube that it didn’t come with. Used the white tubing for these colors that the book showed to use yellow & blue tubing. There’s a lot to read and follow and do. The steps could have been better laid out, Advise others to watch a few YouTube videos to see how others did their work. Taking the plastic wrappers off the filters is important. Make sure you do that and then replace them and tighten the cartridges. Bleeding out the air & purging the system is important. Flushing out the cartridges first & then the other filters till water clears and comes out clean, let water out of the system & them turn on the tank, flush out at least 2 tanks or more. It’s a little challenging but taking your time is always worth it as you can save time not having to chase leaks or redoing some steps. Bubbles are commonOnce you start using the system, but they don’t tell you that. Clears up after using it for a while. Just bubbles not sediment.

Model: 100gpd, ph+Despite being packaged well, a fitting was broken off inside one of the filters. I was able to get it out though. Customer service answered on my first call and expedited new parts. Thank you Nick!There are a few other things worth mentioning here. The included “leak stop device” is made for 1/4 inch hoses and my hardware didn’t have 3/8 to 1/4 elbows. You can find a 3/8 x 3/8 leak stop on Amazon for around $15 if you’re concerned about water flow.The included filters (4,5 & 6) also have 3/8 x 1/4 inch inlets. I ordered the filter package shown with the plus sign next to the system on Amazon and they were not the US made ones. Not sure what the difference is (other than price) as they both seem to be 1/4 inch inlets. FK-US for US made ones. Currently they are out of stock.The system seems well designed and comes partially assembled including a water saving ASO valve. Particularly like the clear housing on stage one. It allowed me to see that the installed filter was wrapped in plastic which they all are, so be aware as it’s not mentioned in the instructions.Love the filter wrench which is easy to use due to the filter housing taper. Metal mounting frame is a plus.I was trying to connect the poly tube to cpvc and had issues with different threads so wound up using compression fittings for the 3/8 inlet and pot filler lines. There is a nice bag of extra parts but mostly for 1/4 inch systems.Despite numerous connections, no leaks! Pressure is good and waste water minimal. Taste is like spring water.I would suggest someone re-evaluate the included parts and make sure needed fittings are there.Looking to save some $$ between pitcher and I/M filter cost. I’d recommend this system without any hesitation at this point.

I installed the PH100 around 2 weeks ago and am extremely happy with it. The water tastes fantastic. It is purified through 5 stages! And the 6th alkaline stage gives the water a great taste. There are no off putting smells or tastes, just great healthy water. Coffee tastes better, tea tastes better, green drinks taste better, and just a glass of crystal clear water tastes better. So I am essentially done with plastic water bottles.The installation took me about 4 hrs. mainly because I don't like hoses dangling so I fastened all of them to the inside of the cabinet under the sink and that takes a bit of time with all of the plumbing and garbage disposal under there, and I like to measure twice before cutting hoses. Expect a few leaks when you install, but you fix them one by one as you go because the install process is orderly via the official YouTube video. The install leaks if you have them are simply connectors or hoses not seated properly and in my case one of the three prefilter canisters was not screwed in tight enough. There was nothing in the install that was frustrating to do. The physical install was straightforward and easy and any troubleshooting was not hard to do.There is a flushing process during several stages of install and after install I flushed the complete system 3x. At my house the tank fills up quickly, in less than an hour, so probably 35-45 min. Which is fantastic.After install I had one very slow leak on the cap of the RO canister. The leak was very small and I called iSpring they send a completely new housing and connector set quickly and at no charge.The water flow from the tank out of the faucet is fast. Filling up for a pot of coffee is a short wait and you fill a glass of water very quickly.And the TDS numbers: Pre: 129 / Post: 19 (because of the alkaline)The PH numbers: Pre 7.5 / Post: 9.7 (the day of install)In the end I am extremely happy that I made this purchase.