Delta Faucet Clarifi Under Sink Reverse Osmosis Water Filter System, 6-Stage RO Water Filter, Tankless Water Filtration System, Undersink Water Filter, Reverse Osmosis Filter System, DWQ1001012

This replaced my old Aquasana RO filtration system that used a tank. This Delta one is far better in many ways and I’m really happy with my purchase. First the total cost of ownership is less, there is no tank so I can use lots of water for cooking and drinking all at once, the system tells me when to replace the filters, it wastes less water and the water comes out really fast and tastes good. Now to the noise. It’s not a problem AT ALL! I was concerned reading the reviews here that it was going to be really noisy when it was running but I can barely hear it in the under sink cabinet and the water landing in my glass is louder than the machine. There is a customer video here of it being really loud which was concerning but after doing my own install I can say as an engineer that if anyone is having a noise problem they either have a defective unit or didn’t install it correctly. If the machine is in spec and you install it correctly you won’t have a noise problem, simple as that. In order to ensure mine would be quiet I had to take some very specific steps - preloading all the water lines with water to ensure when first turning on the unit that no air was sucked in, ensuring no tubes touch the sides of the unit while it’s running by doing a clean and organized install, not using an air gap faucet (they aren’t needed for tankless systems like this unlike the old tank RO systems that do need the safety feature of an air gap), and finally using sorbothane vibration isolating feet on the unit instead of the factory feet which isolates vibrations from reverberating through the sink cabinet and making noise. If you do all of those, you’ll be set! (If you watch the video I attached you can hear the faint dull hum of the machine filtering in the background as the glass fills) (Photo is of sorbothane feet for vibration isolation)

We’ve had the Delta Clarifi installed for about 9 months now and it’s been a huge upgrade. We had a traditional RO system with a big bulky tank before. This one freed up a ton of space under our sink. I was honestly shocked by how much room we got back. The water tastes noticeably better. Clean, fresh, no chlorine or chemical aftertaste. It fills glasses quickly too, which I didn’t expect from a tankless system. It looks sleek, runs smoothly, and is certified to filter out all the stuff that matters like lead, chlorine, PFAS, and more. Filter replacements are simple and it reminds you when it’s time so there’s no guesswork. A couple quick tips. It does need power, so make sure you have an extra outlet available. Ours was taken up by the garbage disposal, so we installed a Garbage Disposal Wireless Switch Kit and now everything runs seamlessly. There’s also a short flush process during setup but it’s easy and well explained. After 9 months, still very happy. Great water, no bulky tank, and a cleaner, more usable cabinet.

I don’t understand how this unit is so expensive and yet so loud. It sounds like a jackhammer every time we run the faucet. To make matters worse, it goes through a repressure cycle about 5 minutes later EVERY time you turn on the faucet, no matter the volume of water. We’ve tried checking and adjusting the water pressure, checking the install by a professional plumber, lining the cabinet with sound absorption, and it’s terrible. Unusable and we’ll be replacing with a different brand as soon as we are able.

Shockingly LOUD. Buyer be aware. I hired a plumber to install new Delta Clarifi system with pre-filter and demineralization cartridge. Instructions are not included. Plumber was expected to watch a 30 minute video to see how to install the system. Before purchasing I read other reviews that noted noise one stated a “bit noisy” however several made no mention of noise at all. I figured noise is subjective and being a Delta product, how bad could it really be, it is bad! not only is it loud when the faucet is running, but the unit also runs a cycle on its own about once an hour that is super loud as well. Thankfully, the water does taste good and I like having access to filtered water so I’m keeping it even though it is ridiculously loud. I also like that it fits under the sink without taking up too much space. I don’t understand how Delta could release a product that is so loud!!

Is it expensive: yes. Turn-key ready to go: yes Does the water taste amazing: yes Did I pay more than I would care to admit between this and the champagne bronze delta spigot: double-yes Would I do it again: absolutely There is no comparison between this and the multistage water filter that was not effective at properly filtering our city-water. The drain sounds as it is working take a little getting used to again, but that sounds like any other reverse osmosis system. The pump in it sounds a little like the water pump in an rv, but the ease of use is perfect. The water quality speaks for itself, and there is no going back. I finally feel like the water is safe to drink for my family, and my kid’s actually seem less irritable since we installed it!

Great flow rate and no issues after several months of use.

Love this r/o. Easy to install and doesn't take up all the room of a tank system. Great work Delta!

Very loud but water tastes good