iSpring F4-CUA4 Replacement Pack for 4-Stage Ultra Filtration System CU-A4, Sediment, UF, KDF, and Activated Carbon Filter, 4 Count (Pack of 1), White

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/hEzgCoxSagaSave 25mm (16-50MM) Sheet Metal Punch Hole Punch, Metal Inner Hex Hole Cutter for Q.Max, Steel Plate, Stainless Steel

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.

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.

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.