iSpring F28K75 NSF Certified 3-Year Replacement Set for 6-Stage Reverse Osmosis RO Systems with Alkaline Mineral Filter, 28 Pieces, White

I’ve been using iSpring filters for 4 years, and this 3-year replacement set is definitely worth it and saves money when buying in bulk. The parts are well-made, easy to swap out, and instantly improve the taste of our water. I love that everything for the full 6-stage system comes in one kit, and the NSF certification gives extra peace of mind. Reliable, long-lasting, and a solid value, highly recommend for anyone running an iSpring RO system.

I recently purchased the iSpring RCC7AK 6-Stage Reverse Osmosis System and it arrived exactly on schedule. They have a great customer serviceI contacted customer service and spoke with Nick, who was incredibly professional. He walked me through the installation steps.Now that the system is up and running, I couldn't be happier. The water tastes fantastic, and my whole family loves it. I was so impressed with this RO filter that I’ve already ordered the 3-year filter replacement supply, which is very reasonably priced. I already told my friends about this RO filter system I highly recommend this system to them and anyone else who is looking to purchase a new RO system!Thank you iSring team for the great RO water filter and wonderful customer service.

We’ve had our filtration system for 4 years now and have loved the quality and taste of the water! Our guests are always commenting on the taste of our water. Seems like such an absurd statement but it’s true! We even bought the same filtration system for my dad. These replacement filters have been very easy to switch out with the old ones. Each time we replace our filters, we run a few gallons through before drinking the water. Just until there are no more bubbles in the water when it first pours into the glass.

After about 13 months of use with my NON-iSpring 6-stage RO system installed last year by a local vendor, the water taste had noticeably changed. By then, I'd been trying to schedule for weeks a date/time with the same vendor for filter replacement. When the tech finally came, he didn't have the alkaline filter with him... I said goodbye to him, and onto Amazon I went.These filters fit perfectly with my RO system. This is by far the best bargain for RO filters, and even includes a replacement membrane (replaced every 3 years). The local RO shop charges ~$150 to replace the 6-stage filters annually (not the membrane), and that's with the "6 months" filters being used for 12 months, and since iSpring's includes 6 of the "6 months" filters, it's an even better value. And you can replace the filters at your own convenience.Only caveat was I had to call iSpring to request 4 free quick-fit adapters to thread onto the stage 5 & 6 filters (my previous ones had quick-fit built into the filter cases), with several wraps of Mr. Gasket 2842G Teflon Tape (can leak otherwise). Phone support was very prompt and helpful.Check YouTube for simple "RO filter replacement" videos. You'll want to clean the Stage 1-3 filter canisters (the big vertical ones), since they get grimy after a year.If you don't already have a horizontal mount for the stage 5 or 6 filters, I'd recommend S5-TO-S6 RO Kit for 2.5" diameter Inline Filter (buy 2 if you need a pair for both filters), which will keep the stage 5 & 6 filters stable and less prone to hose leakage.---[Update 02/02/2016]I just replaced replaced the second set, and water's still awesome. A friend had even commented how good our water tastes, although we didn't even mention our R.O. system!

Update 7/8/2021: This set came with a tiny packet of fittings for a slightly new style of final carbon filter. I missed it buried at the bottom of the big box. Called iSpring. They sent one priority mail (Thanks Don!). Now I feel bad because I had one after all. These folks are terrific. Replaced all filters including RO. Other than just not seeing the tiny packet, no problems.We have a 6 year relationship with iSpring (123filter.com), bought our 6-stage undersink RO unit in 2014, and I can't say enough good about the company and their systems. Divide the price I paid for these filters by the 36 months they are going to last? That's $4/month for all the water we'll ever need, we even water our plants and our pets with it. Next I get the ice cube kit. Our E. Texas water makes coffee taste like soap, plus, I'm just not seeing the numbers I'm looking for in the quarterly reports from the water dept., but why worrify? Just purify.Over 6 years things break. A nylon union split. A filter housing sprung a pinhole leak. The end of a Teflon tube got too chewed up by a quick-disconnect fitting. Hey, the whole thing's under pressure and pure water just wants to dissolve, dissolve, dissolve, so no big surprise there. We set our unit in a turkey roaster pan just so a minor leak won't wet our kitchen throw rug. If there is one, it's quick to spot, and iSpring is tops at customer support.Water was running slow. Back to the manual. All we needed to know we found in one tiny troubleshooting paragraph. A bicycle pump, a tire gauge and a half hour, and the water was back to running gushers.If you or someone you know is the least bit handy, and if you hate big monthly costs as much as we do, iSpring's a no-brainer.

I installed this system at my house over a year ago. I really think its a fantastic design and set up. Very easy install and service, almost anyone should be able to install themselves. I just put another system in my shop today since I was so impressed with the one at my house. I will probably by more to put in my other offices

Pretty easy setup. Little locking tabs could be a little bigger to make it easier to grab and insert them . Be careful installing them as they are a little springy and can pop out of your hand. Make sure you insert the tubing per the instructions and have and cut off the tubing at 90° and insert the The recommended amount of tubing. Also, the line on the in line of the reverse osmosis could be longer to make it easier to reinstall you will have to take make sure the red line is off of that to tighten that end. The RO faucet is nice. It could be a little higher on the spout coming down as it doesn’t allow a pot to go under as we use the RO water for all of our cooking and drinking. Very happy with it so far not sure on the exact amount of production per day. We installed ours in the basement right under the sink as there was no room underneath the sink for all that with a garbage disposal and other items.

Either use these filters to clean the drinking water or your kidneys. ISpring filters work great. But -yes there is a but- when you see just how much yuck these filters capture you will change them more often than the "recommended" schedule.

muy facil de remplazar :)

Muy buenos y buen precio en oferta.

Sehr Gute Osmose Filter

Great tasting water!I have been very happy with this filter. Nick from customer service has been very helpful!

Ordinato quando era in offerta sempra preso ma doppo 2020 il prezzo andata su €70-80. In offerta era solo €15 sopra il costo in 2018.. Prezzo normale 2025 e un pochino caro mah ci sta per 3 anni é la qualità sembra buona..