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Culligan

Culligan CUW4 Refrigerator Water Filter | Replacement for Whirlpool Water Filter 4 (EDR4RXD1) | Replace Every 6 Months | Pack of 1

  • Based on 517 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Feb 17
Order within 14 hours and 26 minutes
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Size: Pack of 1


Style: CUW4


Features

  • Culligan CUW4 Refrigerator Water Filter - Compatible Fit and Replacement for Whirlpool Filter 4 (EDR4RXD1 and WHR4RXD1)
  • Culligan Provides Better Water - Culligans water filtration systems have improved water quality for thousands of families worldwide
  • Filters 50 Plus Impurities* - Reduces lead, asbestos, chlorine taste/odor, 8 pharmaceuticals, and cysts. Certified by IAPMO R and T against NSF/ANSI standard 42, 53, and 401. *Substances reduced by this filter are not necessarily in all users water
  • Compatible Refrigerator Fit - Culligan refrigerator water filters provide a compatible fit with select Whirlpool, JennAir, KitchenAid, Maytag french door and side-by-side refrigerators and are easy to install and replace

Description

Culligan’s water filtration systems have improved water quality for thousands of families worldwide. Culligan filters reduce up to 50+ impurities including lead, asbestos, mercury, chlorine taste & odor, 8 pharmaceuticals, and cysts. Culligan filters reduce chlorine taste & odor for better tasting water and ice. They provide fresh water by also reducing select pharmaceuticals including ibuprofen, atenolol, and trimethoprim. Additionally, most Culligan filters reduce the presence of illness-causing, waterborne parasites, like Giardia and Cryptosporidium, helping you stay healthy when you hydrate. Culligan filters have an activated carbon cartridge that absorbs the carbon- based VOCs (volatile organic compounds) as they pass through the filter, resulting in better water. Culligan filters provide a compatible refrigerator fit that’s easy to install and replace every 6 months. Culligan filters are certified by IAPMO R&T against NSF/ANSI 42, 53, and 401 for the reduction of claims specified in the performance data sheet. For complete list of Culligan filters and impurities reduced, see manufacturer's performance data sheet or website for full contaminant reduction information. Substances reduced are not necessarily in all users’ water.

Material: Plastic


Product Dimensions: 3"D x 3"W x 9"H


Item Weight: 9.6 ounces


External Testing Certification: NSF, ANSI


Product Benefits: Filters 50 impurities including lead, asbestos, chlorine taste/odor, 8 pharmaceuticals, and cysts


Material: ‎Plastic


Product Dimensions: ‎3"D x 3"W x 9"H


Item Weight: ‎9.6 ounces


External Testing Certification: ‎NSF, ANSI


Product Benefits: ‎Filters 50 impurities including lead, asbestos, chlorine taste/odor, 8 pharmaceuticals, and cysts


Brand: ‎Culligan


Set Name: ‎CUW4


UPC: ‎850031536036


Unit Count: ‎1.0 Count


Number of Items: ‎1


Brand Name: ‎Culligan


Model Info: ‎CUW4


Item model number: ‎CUW4


Part Number: ‎CUW4


Special Features: ‎Tool-Free Replacement


Color: ‎White


Material Type: ‎Plastic


Included Components: ‎Replacement Refrigerator Water Filter


Batteries Required?: ‎No


Date First Available: May 13, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Feb 17

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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Top Amazon Reviews

    • Cost
Size: Pack of 1 Style: CUW5
A lot cheaper than kitchen aid and it's still a name brand you can trust.
Reviewed in the United States on December 5, 2025 by Rachelle Salisbury
    • Crisp tasting fridge water
Size: Pack of 1 Style: CUW4
I have a KitchenAid KBFS25EWMS refrigerator and this fit perfect for the water filter replacement. Install was simple, just had to twist off the old filter and then twist this guy on. Once installed, I followed instructions to prep the filter and let water flow through the filter. Now the water from my fridge tastes so much better! ... show more
Reviewed in the United States on October 8, 2025 by Jeffery
    • Buyer Beware
Size: Pack of 1 Style: CUW1
Review Image by Richard W. Swymeler Richard W. Swymeler
Review Image by Richard W. Swymeler Richard W. Swymeler
Buyer Beware The product being shipped has a plastic tab on top that the older filters did not have. I have contacted Whirlpool and Culligan and those that stock this part supposed to be a good replacement for EDR1 RXD1. I have a attached a copy of a picture that shows the older filter that I purchased where the TAB was NOT on there and it worked. The new one arrives and there is this plastic tab. as a result the new one will NOT fit in. I went to home depot and all their product had this same new tab. What has changed. No one will tell me. AS you can see in the picture below the filter on on the left is the older version of the filter with NO TAB. The one on the right is what Amazon sent (and same as what is now available in the store). The picture on the right shows that there is NO place for this plastic tab to be inserted. I cannot get any support from any one. I'm just going to leave the old filter in place until such time I buy a new fridge. Customer Service is absolutely missing. ... show more
Reviewed in the United States on July 29, 2025 by Richard W. Swymeler Richard W. Swymeler
    • Water snob
Size: Pack of 1 Style: CUW4
I’m a water snob so when I bought my house I also bought this. Fits my fridge (the filter compatibility is listed in the product) It doesn’t disturb the water flow or pressure. It was super easy to install, I did it myself (just a girl)
Reviewed in the United States on October 29, 2025 by Ashley
    • Awesome replacement
Size: Pack of 1 Style: CUW4
Review Image by Matthew Martin Matthew Martin
Works fine and water tastes much better than my tap water. I can’t tell a difference between this and the name brand in that sense. Installs just as easy as name brand and fits well. It was a little leaky after I first installed it, but that stopped after I ran water through it for a little while. For half price I’ll buy this from now on. ... show more
Reviewed in the United States on January 7, 2026 by Matthew Martin Matthew Martin
    • Great solution!
Size: Pack of 1 Style: CUW4
Excellent product for reasonable price. Good value. No issues.
Reviewed in the United States on October 10, 2025 by Nanabear
    • Improved Water Taste and My Ice Maker Works
Size: Pack of 1 Style: CUW4
While I wish filters overall cost a bit less, this filter seems to be a fair price and performs the best. So certainly the best bang for the buck. I've tried other filters and brands, but this does the best of them all for my Whirlpool fridge. It improved the taste of my water removing whatever was there before. It tastes nearly as good as RO/bottled water if not better in some cases. Obviously water quality depends on your source and location, so your mileage may vary. As a side note, it fixed my ice maker PSI and it started making ice consistently. Which I suppose speaks to the quality of the filter as well. It filters well while not terribly restricting water flow. I'll be buying more in the future. If it goes on sale, I'm stocking up. ... show more
Reviewed in the United States on September 5, 2023 by Jon
    • Works like original
Size: Pack of 1 Style: CUW5
Fine replacement for the OEM filter. No problems
Reviewed in the United States on October 17, 2025 by William Fickas

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