iSpring CU-A4 Ultra-Filtration Under Sink Water Filter System

My Experience with the iSpring CU-A4 Under Sink Water Filter I recently installed the iSpring CU-A4 under sink water filter, and I'm genuinely impressed. As someone who's always been a bit skeptical about the true efficacy of home water filtration systems, this unit has completely changed my perspective. First off, the installation was surprisingly straightforward. I'm no plumbing expert, but the clear instructions and well-organized components made the process relatively painless. Within an hour or so, I had fresh, filtered water flowing from my dedicated faucet. And what a difference it makes! The most noticeable improvement is in the taste and smell of the water. Our tap water, while generally safe, often had a slight chlorine odor and a somewhat metallic aftertaste. With the iSpring CU-A4, that's completely gone. The water is crisp, clean, and incredibly refreshing. It's truly a pleasure to drink, and I find myself reaching for water more often throughout the day. Even my coffee and tea taste noticeably better. I also appreciate the compact design of the unit. It fits neatly under my sink without taking up an excessive amount of valuable cabinet space, which is a huge plus in smaller kitchens. The dedicated faucet is sleek and unobtrusive, blending well with my existing fixtures. While I can't scientifically measure the contaminant reduction, the peace of mind knowing that my family is drinking water filtered through a reputable system is invaluable. The four-stage filtration process, including activated carbon and ultrafiltration, gives me confidence that we're significantly reducing chlorine, sediment, and other common impurities. In conclusion, the iSpring CU-A4 under sink water filter is an excellent investment for anyone looking to improve the quality of their drinking water. It's easy to install, produces great-tasting water, and offers genuine peace of mind. Highly recommended!

Long time customer or iSpring. I've installed the american style system in my family homes in Canada and this system in my home in the UK. Their filtered water tastes as it should! I had an issue with the included tap/faucet leaking but iSpring sent out a replacement that works without issue. Only other issue I had in years of owning this was not being able to find replacement paper discs for the mechanical leak sensor (water makes the paper discs swell which pushes on a valve to close the flow of water), and because I get condensation under my sink I have to replace them more regularly than I'd want to. I contacted iSpring and Francis helped me out with that too. They're very good at after sales support - that's probably the main reason I keep coming back to them, aside from the quality of their product that is. I can easily recommend it to you if you have a 1-stage filter or filter jug and are looking for some real water filtration. The cost of filters is only marginally higher than for a filter jug, and for something that gives you on-demand well filtered water without waiting.

We're really very happy with our new water filter system. It was pretty straightforward to fit, and after running the water through for about 20 - 30 minutes we have water that looks, tastes and smells much better than the regular tap water. You really can tell the difference. No more unpleasant chlorine smell. Having a dedicated tap for the filtered water is a good idea, because then you're not using filtered water to fill up your basin for washing up etc, thus keeping the life in the filters for longer. Fitting the new tap was pretty straight forward on an aluminium kitchen sink. I just drilled a guide hole, and used the tool in the link that I'll put below this review that I bought also from Amazon to cut the hole. Easy to do, just needs a bit of brute force, but it makes a very neat hole. The water from the tap fills a glass at a good speed. One thing to add, is that the customer support is excellent. After fitting, I had a follow up question that I contacted the team about. The reply from Nick was prompt, courteous, and above all really helpful. This should be kept in mind as a big plus point if you're contemplating which manufacturer you should buy from. This is the link to the tool I used to cut the hole in my aluminium sink: https://amzn.eu/d/hEzgCox SagaSave 25mm (16-50MM) Sheet Metal Punch Hole Punch, Metal Inner Hex Hole Cutter for Q.Max, Steel Plate, Stainless Steel

Why did you choose this product over others?: Absolutely avoid this, does not filter anything whatsoever. My kettle scalding so much compared to my old filter it s disgusting. Water taste even worse than normal tap. And it was cloudy for weeks. Will have to buy my old filter again and go through the hassle of install...

This undersink unit was very easy to fit. The fittings are metric, and my pipes were older i/2 inch, so I bought a 1/2 inch to 15mm converter, and new metric washing machine tap, to fit it in the washing machine cold water pipe as this seemed easier than cutting the cold water pipe going up to the tap. The small water pipes use an O-ring system, and one had a leak when I first turned the water back on, I just hadn't quite fitted the pipe correctly and I was able to just remove and refit it, which cured the leak. You have to run the water for quite a while to let the filters settle down, and, to start with, it spat a lot when turning the tap on, until all the air bubbles had worked their way out of the filters, and it works perfectly now. Gives very reasonably priced peace of mind, knowing you are drinking crystal clear fresh water.

So happy with the quality and taste of my water now. You just don't realise how horrible tap water taste until you plug in ispring. It's been 1 hour since install and I'm already thinking of upgrading to the best unit ispring can offer.

The water is still cloudy, I have never experienced this with other filters. May I know why?

This product is not worth purchasing because replacement filters are not sold separately. Without the ability to replace the filters, the entire setup becomes useless once the original filters wear out.

I waited a while to write this review as I wanted to see how this held up for a month. I can say this has worked perfectly, looks classy (not cheap), and the water has since a nice clean taste. I should have put this in years ago however I was always concerned that it would be too hard to do, or would leak or just from not knowing enough how these work. The install was literally under 20 minutes, so straight forward and the components, hoses etc are high quality. The hardest part was drilling a hole in the stainless steel sink, however I did not care much as the sink is old and we are renovating the kitchen fairly soon. Connecting the hoses was literally a snap, the unit fits under the sink no problem, and I made sure to leave the hoses longer so I can pull the unit out easily to change the filters. The faucet itself looks high end and the lever has a nice weighted feel to it, not cheap moving, more of a smooth range of motion. The only thing I wish was a little more solid was when I turn the faucet from side to side, say filling up the dog bowl on the counter, it is kind of flimsy, I wish this had the same feel as the water lever did. When I hooked everything up I had to let it run for a good 30 minutes to clear the filter sediment out, and for the first couple days when first used in the morning, there would be some sandy sediment. That was gone by the third day and crystal clear since then. I want to get the water tested and compare to this to see what is really filtered, that is my only question, you are taking the companies name that the filters work, and this is why you need to review and do some research. So far very happy and would buy again no problem!

Super easy installation! Very tasty water! Took away the tap water smell, and it does make a big difference although Amsterdam has one of the best tap water in the world! Quality product

Tarde mucho en elegir y me decidí por estos filtros por su fácil instalación , fácil cambio de cartuchos después de 12 meses , y el precio muy recomendables . Debes dejar que fluya por 15 min antes de tomar agua cuando es la primera vez que se use los filtros. La empresa que los hace es de USA y tienen buenas reseñas en ese país eso da mucha tranquilidad ,que vienen de una empresa sólida.

Volevo liberarmi dalla schiavitù di dover acquistare casse d'acqua, e avevo due scelte per il depuratore: osmosi inversa e ultrafiltrazione. Vivo a Roma e l'acqua qui è buona, nel mio caso non credo abbia senso usare l'osmosi inversa che toglie tutti i sali minerali e poi rimineralizza l'acqua, così dopo un po' di ricerche ho trovato questo articolo. L'ho scelto perché ha ottime recensioni, principalmente all'estero, è perché è certificato NSF 42 e 53, che pochissimi prodotti hanno: rimuove moltissimi micro-inquinanti incluse le micro-plastiche. Il prodotto arriva già pre installato, i filtri sono già avviati al supporto superiore, quindi si devono solo collegare i tubi, non è necessario fissarlo a muro, io l'ho appoggiato alla base del mobile, ma sono forniti anche i tasselli per il fissaggio a muro. Ci ho messo circa 30 minuti a montarlo, però nel mio caso ho preferito comprare anche un rubinetto che avesse sia uscita acqua caldo/fredda, che depurata, non volevo fare un secondo buco sul lavello. La prima volta che ho aperto il rubinetto é venuta fuori un po' di polvere nera, ho cercato online, sembra sia normale, che non sia tossica, comunque le istruzioni del prodotto dicono di far scorrere l'acqua per un po'. I primi 2-3 minuti l'acqua non aveva ancora un buon sapore, così l'ho fatta scorrere per 30 minuti in totale, forse un po' troppi, in ogni caso il risultato è stato ottimo: l'acqua non ha più nessun gusto di cloro e sembra di bere acqua in bottiglia, che è quello che volevo ottenere, quindi consiglio assolutamente l'acquisto! Ho verificato sia pH che TDS dell'acqua depurata e sono quasi identici a quella dell'acqua fredda normale, come dovrebbe essere dato che non rimuove i sali minerali dell'acqua corrente. Ho acquistato anche un gasatore della Soda Stream, così posso anche fare l'acqua leggermente frizzante a mio piacimento.

I always drink water straight from the tap but a few months back, the water supply to my home tasted chemically weird intermittently. Calling PUB did not solve the issue so turned to a water filter system instead. I got this system because iSpring is a reliable brand among the many systems out there and the replacement filters are readily available online. The provided installation instruction is pretty straightforward, most difficult part is to drill a hole through my granite countertop to fit the faucet. Will need a power drill and a diamond bit for that. Cheaper to get the diamond bit from aliexpress. Did not get any leaks on first run. Flushed over 20 ltrs of water through the system before the water looks clear enough to drink. The filtered water taste like regular tap water but it should get rid of the intermittent chemical taste. The faucet feels solid but it's lever is a bit tight compared to my main sink faucet. I did not use the supplied water leak detector.