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Culligan

Culligan US 4 EZ-Change Under Sink Water Filtration System with Dedicated Faucet and Premium Filter for Clean Drinking Water, Single Unit, Chrome

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Availability: In Stock.
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Arrives Saturday, Oct 10
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Size: EZ-4 (Best Filtration)


Style: Under-Sink System


Features

  • EVERYTHING INCLUDED: Filter head with mounting bracket, RC-EZ-4 premium cartridge, dedicated chrome faucet, tubing, supply adapter, and mounting hardware.
  • REQUIRES A DEDICATED FAUCET: Installs a separate chrome drinking-water faucet at your sink you'll need an existing hole or one drilled in the countertop.
  • REDUCES LEAD & CYSTS: Filters lead, mercury, cysts, VOCs, MTBE, chloramines, chlorine taste and odor, and particulate Class 1 at 0.5 GPM.
  • NO-MESS FILTER CHANGES: Built-in shut-off means no buckets, towels, or wrenches and the electronic faucet indicator tells you when it's time.
  • CERTIFIED BY IAPMO: NSF/ANSI 42 for chlorine taste and odor, chloramines, and particulate Class 1; NSF/ANSI 53 for lead, cysts, mercury, VOC, MTBE, and turbidity.

Description

The Premium US-EZ-4 EZ-Change filtration system provides clear, clean, great-tasting water for drinking and cooking through a dedicated faucet for up to 6 months or 500 gallons. The package includes a filter head with built-in bracket, an RC-EZ-4 premium replacement cartridge, mounting screws, supply adapter, a lead-free chrome faucet with built-in electronic cartridge life indicator, battery, and 1/4-inch tubing. Note that this system installs a separate drinking-water faucet, so an existing sink hole or a new one drilled in the countertop is required. Avoid the mess of changing traditional cartridges with this Culligan under-sink filter, eliminating the need for buckets, towels, wrenches, and other tools. There is no need to shut the water supply off when changing the cartridge, thanks to the built-in ball and check valve in the filter head. This filtration system reduces lead, mercury, cysts, chloramines, chloroform, MTBE, VOCs, turbidity, particulate Class 1, and bad taste and odor in your drinking water. From the Manufacturer The Culligan US-EZ-4 under sink drinking water system includes filter head with built In bracket, RC-EZ-4 cartridge, mounting screws, supply adapter, lead free faucet with built in electronic cartridge life indicator and 1/4-inch plastic tubing, 6 months/500 gallons filter life. The filter features a twist on, twist off mechanism, quick connect fittings, double water shut off. The filter reduces bad taste & odor, chlorine taste & odor, sediment, lead, cysts such as cryptosporidium & giardia, mercury, turbidity, particulate Class I, VOC (see performance data sheet for full list of contaminants reduced), MTBE and chloramines. The filter is NSF certified and has a 5-year warranty.

Brand: Culligan


Special Feature: Dedicated Chrome Faucet, Electronic Filter Life Indicator, Filter Included, Reduces Lead & Cysts, Twist-Off Cartridge Change See more


Product Dimensions: 3.5"L x 3.5"W x 13"H


Material: Chrome, Plastic


Capacity: 500 gallons


Included Components: Filter Head, RC-EZ-4 Cartridge, Chrome Faucet, Tubing, Adapter, Hardware


Package Information: Cartridge


Installation Type: Under Sink


Purification Method: Carbon Block


Power Source: Not Powered


Other Special Features of the Product: Dedicated Chrome Faucet, Electronic Filter Life Indicator, Filter Included, Reduces Lead & Cysts, Twist-Off Cartridge Change


Container Type: Cartridge


Installation Type: Under Sink


Purification Method: Carbon Block


Power Source: Not Powered


LowerTemperature Range: 40 °F


Maximum Flow Rate: 0.5 gpm


Operating Pressure Range: 30-125 psi


Upper Temperature Rating: 100 °F


Supported Water TDS Level Maximum (PPM): 500


Filter Life Cycle: 6 months


Product Shelf Life: 6 months


Item Dimensions L x W x H: 3.5"L x 3.5"W x 13"H


Capacity: 500 gallons


Material Type: Chrome, Plastic


Brand Name: Culligan


Included Components: Filter Head, RC-EZ-4 Cartridge, Chrome Faucet, Tubing, Adapter, Hardware


Model Name: EZ-Change Premium


Model Number: US-EZ-4


Warranty Description: 2-Year Limited Warranty


UPC: 033663005600 807032976200 033663006461


Global Trade Identification Number: 61


Manufacturer: Culligan


Number of Items: 1


Number of Packs: 1


Item Type Name: Ez-Change Water Filters, Under sink Kit, Lewvel 4


Part Number: 01019054


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Recommended by my municipal water department
Size: EZ-4 (Best Filtration) Style: Replacement Filter
I've been using these filters for 4-5 years now, changing them every 3-4 months since I live in an area with a lot of iron in the water and a history of pFOS contamination. I got my first one directly from my local water department, and I've been using them ever since. The water quality from these RC-EZ-4 filters is excellent, and it's really important to me that they remove a lot more than any other type of filter. The quantity of water coming out of the dedicated spigot is pretty good, too. I use it for drinking and cooking and my pets' water. Changing out filters isn't that hard IF you align things correctly. I colored the directional arrows with magic marker so I could see them better to do this. As mentioned, I try to change the filter every 3-4 months (not every 6 months) to keep the water quality up. I'm always surprised at just how heavy a used filter is compared to a new one. It's done its job! ... show more
Reviewed in the United States on June 30, 2025 by Woof!
    • Excellent filter for a decent price
Size: EZ-1 (Good Filtration) Style: Under-Sink System
I had one of those filters that you put on the end of your faucet for a number of years. It worked pretty well until I finally noticed that water had started leaking out from the base of the faucet neck. Apparently after all this time the back pressure caused by that filter and the weight of it levering down on the neck was causing the internal gaskets to fail. I removed the filter and the leaks stopped. But, this left me without filtered water. I wanted filtered water still but without the hassle of a pitcher in the fridge or having to replace my entire faucet due to the back pressure and levering caused by the on the neck one. Looking on Amazon I found a number of filters of varying prices and ultimately I decided to take a chance on this Culligan unit because the price was decent, the name is well known to me, and it had pretty good reviews. So far in the month or so that I've had it installed I'm quite satisfied with it. The water comes out at a very decent pressure, far better than my old on the faucet based filter. The kit comes with a plastic bracket that fits to the wall, some plastic tubing, a little adapter to put in-line with your cold water feed, some screws, the filter cartridge and the faucet. The faucet is not a super high quality item. It's mostly plastic, but it feels pretty solid for my needs. It actually comes in several pieces that you put together during the installation. I started my installation by drilling a hole in the sink. Make sure you have a sharp drill bit of the right size. The size they ask for is 5/8" which is one size larger than you'll find in most off the shelf drill bit sets. I thankfully had a 3/4" bit laying around from a different project, but my bit was fairly dull after that previous project so drilling was a bit of a challenge for me. I compared my 1/2" bits to the threaded stem on the base of the faucet and decided it just was not worth the risk of making too small a hole. The threads on the stem are all plastic and could be easily damaged by jamming the works into a hole that wasn't big enough. So do yourself a favor and get the right size drill bit before you start. After I had the hole drilled I unscrewed the wing nut from the base of the faucet and removed the metal plate. This left a plastic gasket on the base of the faucet that came off and I had to put back in place. After looking at the pictures I finally realized that the handle is supposed to go on the side of the faucet so I set the faucet in the hole and then reached under the sink to put the metal plate on and thread on the nut. Be careful not to over-tighten this as you could easily strip those plastic threads. Once it was snugly on the base felt pretty solid. I then took the neck of the faucet and attached it to the base and it looked pretty sharp, with no sign of the mangled hole I had drilled to put this in place. Next I shut off the cold water and proceeded to disconnect the feed line from the cold water connection on my faucet. I applied a little nylon plumbers tape to the connection and screwed on the plastic connector that came with the kit. A little more plumbers tape on the bottom and I reconnected the cold water feed line. After that I took the plastic bracket and using a sharpie clearly market the in and out sides so I wouldn't get confused later and hung it on the back wall with the included screws. Once all the major pieces were in place I took the plastic hose line, this is the same diameter as the kit that feeds my ice maker on my fridge, and carefully measured and cut two sections. On the base of the faucet you'll have a little plug that goes into the tube and a collar that goes over the hose. This threads onto the base of the faucet and once snugged down creates a good connection. The other end you simply wet and insert into a friction lock on the plastic bracket. The other line is even easier as it uses the same friction locks on both the hose line adapter and the plastic bracket. Finally I took out ye olde sharpie and wrote the date on the filter to remind me when I had installed it and connected it to the bracket by twisting it into place. Once it was snugly connected on went the water and after a quick check for leaks I turned on the faucet and a jet of water came streaming out. The instructions say you have to let it run for about ten minutes or so to let it flush out material from the filter. After the directed time I filled up a cup of water and tasted the sweet tasteless taste of success. The best part is that there is absolutely no impact to the water flow on my regular faucet and the new faucet provides water at pretty much full pressure. I'm sure this will go down over time but it is much better than my old filter. Looking at this solution I can see where if I ever so desired to step up to the two or three cartridge solution I could easily swap out the bracket by simply removing the plastic hoses from the friction locks. So if you are questioning whether you need the single cartridge or three cartridge solution know that you should be able to easily upgrade. ... show more
Reviewed in the United States on August 25, 2012 by Bobmon
    • Easy, inexpensive & good tasting water.
Size: EZ-4 (Best Filtration) Style: Replacement Filter
Good tasting water & cuts how much calcium deposits are in my teapot by at least half. Check what it filters to make sure it does all you need. Not equivalent to Reverse osmosis & the price reflects that!
Reviewed in the United States on June 29, 2025 by Terri
    • Pretty good filter
Size: EZ-3 (Better Filtration) Style: Under-Sink System
Works as it should. However it does tend to leak water from time to time when it’s bumped or the sink is tapped. Otherwise it works as it should.
Reviewed in the United States on June 14, 2025 by MegR
    • Great price
Size: EZ-1 (Good Filtration) Style: Refrigerator System
Love it easy to install
Reviewed in the United States on June 12, 2025 by Dey'Adrian
    • Great Purchase
Size: EZ-4 (Best Filtration) Style: Under-Sink System
We have had this product for a couple of weeks now. The difference in the water is very noticeable. We were purchasing water by the gallon from a machine in our neighborhood. I'm using the Culligan water for my ice and it is smooth and comes out in one piece not breaking like it used to. The water does taste better (no taste). Very happy with this purchase. Also after looking at other filters the cost was definitely affordable. ... show more
Reviewed in the United States on April 26, 2025 by Elizabeth Masterton
    • Good value
Size: EZ-1 (Good Filtration) Style: Under-Sink System
Review Image by dan dan
Good kit for the price. Easy to install and works amazing from a well known brand. I can see and taste the difference in my drinking water. I ordered the "good" kit when it's time to replace the filter I will be ordering the "best" filter
Reviewed in the United States on May 11, 2025 by dan dan
    • Used daily on Refrigerator
Size: EZ-4 (Best Filtration) Style: Replacement Filter
Been using these on my refrigerator for years. They filter great and remove the chlorine taste from the water and ice.
Reviewed in the United States on May 13, 2025 by Vietnam Vet 66

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