F22-75

This under sink 5 stage RO system went together easily with the help of the manual and is currently working quite well. A number of little things, like the spare parts kit and the leak sensor cutoff switch are a nice touch. The first stage sediment filter clear housing is a must and seems to only be included in this brand. Overall quality is excellent and the full color pictures with little installation hints were great. Some minor howevers... However, there are a couple of items that can be improved, although they don't directly affect the performance of the system. One is the sheer bulk of the system (and any other RO system of this design). For dual sink installations where you have two sets of drains - and possibly garbage disposers, the system will not fit under the sink in all cases - mine was one. The main problem is the pressure tank. If you have a cabinet next door to the sink that you can give up some space, then the tank can go there. Otherwise it could be a deal breaker. This should be explained at the beginning of the manual and should give a footprint diagram and state: "STOP! Before you unpack our system...". This could simply be an added sheet laying in the top of the package. Second, the tool list is basic and you'll need other tools depending on the installation. Buy the optional slide-out rack is a must unless you plan to unmount the entire RO system occasionally as it will be impossible to change filters under the sink, especially the RO membrane. I ended up installing mine in the utility room with the faucet mounted on my laundry sink. This would be true of any RO system of this design. Not something explained on Amazon web pages for any system I looked at. Third, the manual gives a great description on how to prepare the leak sensor feedwater cutoff device, but they omitted to tell you where to put it and which line to put it in. I added the term "feedwater" because that's the line you put it in. It should be placed in the bottom of the sink cabinet under the RO system to detect leaks from the various push-in connectors that wet the cabinet floor. That should be thoroughly explained and seems to have been missed. Fourth, this system on my pressure well pump with 50-65 psi pressure switch, produces about 20 gallons a day, not 75 as advertised on Amazon. Real specs are actually spelled out in the manual and are accurate there. Not sure why they are advertising 75 GPD. The RO water to waste water ratio is not 1.5:1, which sounds amazing. It is closer to 1:1.5, which is closer to what I have read, about RO systems and is actually quite good for a non-boosted system. Although this is what I expected, it is something to be aware of if you are using it heavily and are paying for your water. A note on the above performance: my TDS (total dissolved solids) is lab tested at about 280 ppm for calcium compounds. This is high, resulting in very hard water, and will slow down RO water production. Also, running the system on a constant regulated higher pressure of 65 psi will improve the RO ratio and production performance. If you're not sure the RO system is working, without a TDS meter, just taste the waste water. (be careful if you suspect high levels of contaminants). Mine tastes like you dissolved a stick of chalk in it - imagined. The RO water is refreshing and clean. Overall, the system is excellent. The USA based company is one reason I chose this system. Although I have not had to use their help, other reviewers did and got good service. I highly recommend this system and their USA based company iSpring.

iSpring is a fantastic water filter system. This is my second review. (July 2025) I bought it initially in the middle of 2018. Customer service is great. In 2023 the water pressure diminished considerably after 5 years of constant use. Sean in customer service explained to me how to fix the pressure issue checking it with a regular tire gauge and then pumping air with a bicycle pump. (Must be between 7 to 10 PSI). That solved the problem. This year (2025) the issue came back. Sean sent me a brand new pressure thank and other parts at no cost although my warranty expired long ago. Yesterday I put all together and my filter is working perfectly again. I just tested the water comparing the tap one (in Hollywood, Florida) with iSpring filtered one (I replaced all the cartridges in April 2025, except the RO membrane one). The numbers in ppm (particles per million) speak by them self. Tap water: 153 ppm - iSpring water: 20 ppm. Watch the video.

Work Great. Fit perfect. Excellent PPM levels. We use them in our off-grid setup for drinking. coffee, cooking water. So they last longer than a year. After 1st year PPM was 30. We use the LED UV after these to have 7 stage.

Quality replacement for the iSpring RO water filter. Easy to install and the water quality is great.

Quality product, very good priced. Arrives promptly via Amazon. Installation: originally installed by a licensed plumber, in a basement crawl space. Replacing filters: Stages 1,2,and3 are quite easy to change, and are the ones changed most often. Stage 4 is a bit more involved to change, but still not too difficult. Stage 5 is the hardest one to change, due to its location, and having to remove the entire filter from the water lines. The design in my opinion, to replace Stage 5 could be improved to make it easier for the customer to do. They use quick fittings on this stage. The instructions leave out one very important thing- how to disconnect the tubing from the fitting! I had to call customer service- it was a Saturday, they were closed. I left a message and they called back promptly on Monday. Spoke with Nick, who was very courteous and helped me with how to do the change. There were two small oval rings between the filter and where the tubing is connected. In order to release the tubing, you have to push the oval rings IN and hold, while pulling the tubing OUT! Such a little step, but one that makes it all work. After getting quite wet trying other ways, getting leaks, this correct way went smoothly and no leaks. Thanks Nick for helping me out. The installation videos from iSpring are good and easy to understand, however I didn't see anything about these quick fittings and how to do this step on them. (also, in the kit, it had Stages 1-4, but you need to order Stage 5 separately) And, in the main kit, you get extra fittings, but they are somewhat hidden in the box, and the kit list doesn't show them.

I had an issue far out of warranty on my 5 stage ispring RO system, but when I contacted Sean he listened to my issue and, right away, sent out a replacement part to solve my issue. Not only does ispring make a quality product they stand by their products and take care of their customers. I highly recommend these guys. You went regret it.

The water filter arrived exactly as expected, and the quality is great. I did run into a small issue where some connectors didn’t fit my existing system, but the amazing customer service team quickly stepped in. They sent me the proper adapters free of charge, making the installation process smooth and hassle-free. Now that everything is set up, I’m absolutely loving the clean, crisp, and refreshing water! The filter works efficiently, removes impurities, and makes a noticeable difference in taste. I highly recommend this filter—not just for the great performance but also for the top-notch support that truly stands behind their product. Would definitely buy again!

同類の浄水器を長年使っていメーカーにフィルター交換依頼してましたがましたが、1年前にispringのシステムに変更、自分でフィルターを購入し交換できるので良いですね 逆浸透膜につなげる前にバケツ6杯くらいフラッシングします

La description de l'article indique que les filtres sont compatibles RCC7P, pourtant je viens de me rendre compte que les filtres post carbone ("Stage 5") ne s'adaptent pas aux raccords à vis du RCC7P, impossible de l'utiliser!!

I was delighted to discover this comprehensive replacement pack. It eliminates any uncertainty regarding which of the five-stage filters to purchase. The process of replacing the filters was equally as simple as the original installation. The instructions provided are straightforward, and the colour-coded system ensures that errors are virtually impossible. I managed to replace all the old filters with the new ones in under 30 minutes. What was the outcome? An immediate enhancement. The water once again tastes impeccably clean and pure, reminiscent of its quality on the very first day. It’s reassuring to know we are prepared for another year of delicious water. For those utilizing the iSpring system, this filter pack is undoubtedly the best choice. Its convenience, ease of use, and ability to maintain exceptional water taste are unmatched.

I’ve used these water filters for years. Occasionally a problem might come up, as it did this time. They’ve changed the stage 5 filter design, and it requires new tee adapters. Sadly, they weren’t in the box. As I have done in the past, I reached out to ispring customer support (in America, no less) and told them the issue. They immediately sent me the adapters I needed free of charge, and even threw in some extras. About €30-40 in value, for free! They arrived from the UK in less than a week. This, folks, is why I am a loyal customer and advocate. Wonderful quality, matched only by their service.