

Culligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink
Key item features
- Premium Filtration: This replacement cartridge effectively filters bad taste, odor, chlorine, sediment, lead, cysts (Cryptosporidium and Giardia), Mercury, Turbidity, Particulate Class I, Volatile Organic Chemicals (VOCs), MTBE, and Chloramines.
- Easy Installation: Features a twist-on, twist-off connection design for simple and mess-free cartridge changes.
- System Compatibility: Designed for use with Culligan EZ-Change drinking water filter systems, specifically models IC-EZ-4, US-EZ-4, US-EZ-1, US-EZ-3, IC-EZ-1, IC-EZ-3, and RV-EZ-3.
- Certified Performance: Tested and certified by IAPMO R & T to NSF Standard 42 & 53, ensuring reliable water quality.
- Extended Life: Provides filtration for up to 500 gallons or lasts for 6 months, depending on the quality of the water being filtered.
- Included Item: Each purchase includes one RC-EZ-4 replacement cartridge for immediate use.
Specs
- Filtration stages1
- Rec. useResidential
- Height9 in
- ModelRC-EZ-4
- Product lineCulligan
- Has written warrantyNo
Reviews summary
- : Water tastes free of impurities.
- : Offers affordable filtration options.
- Free shipping
Free 90-day returns
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| Product | Viewing this itemCulligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink ![]() $54.98 current price $54.98504.7 out of 5 Stars. 50 reviews | Culligan RC-EZ-3 Under Sink Water Filter Replacement, Advanced ![]() $33.65 current price $33.65184.7 out of 5 Stars. 18 reviews | Culligan Under Sink Replacement Filter - Basic ![]() $23.24 current price $23.24114.5 out of 5 Stars. 11 reviews | Culligan US-DC1 Direct Connect Under Sink Replacement Water Filter ![]() Now $20.95 current price Now $20.95, Was $24.91$24.91 | Brita Hub Replacement Water Filter Instant Powerful Countertop Water Filtration System ![]() Now $26.99 current price Now $26.99, Was $29.99$29.99 1774.8 out of 5 Stars. 177 reviews | Culligan Water Filter Housing,10-37/64" H US-2R ![]() $68.68 current price $68.6815 out of 5 Stars. 1 reviews |
|---|
| Filtration stages | 1Culligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink | 2Culligan RC-EZ-3 Under Sink Water Filter Replacement, Advanced | -Culligan Under Sink Replacement Filter - Basic | -Culligan US-DC1 Direct Connect Under Sink Replacement Water Filter | 1Brita Hub Replacement Water Filter Instant Powerful Countertop Water Filtration System | -Culligan Water Filter Housing,10-37/64" H US-2R |
|---|---|---|---|---|---|---|
| Rec. use | ResidentialCulligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink | ResidentialCulligan RC-EZ-3 Under Sink Water Filter Replacement, Advanced | ResidentialCulligan Under Sink Replacement Filter - Basic | ResidentialCulligan US-DC1 Direct Connect Under Sink Replacement Water Filter | ResidentialBrita Hub Replacement Water Filter Instant Powerful Countertop Water Filtration System | ResidentialCulligan Water Filter Housing,10-37/64" H US-2R |
| Height | 9 inCulligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink | 10.13 inCulligan RC-EZ-3 Under Sink Water Filter Replacement, Advanced | -Culligan Under Sink Replacement Filter - Basic | 11.22 inCulligan US-DC1 Direct Connect Under Sink Replacement Water Filter | 2.8 inBrita Hub Replacement Water Filter Instant Powerful Countertop Water Filtration System | 11.61 inCulligan Water Filter Housing,10-37/64" H US-2R |
| Product line | CulliganCulligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink | -Culligan RC-EZ-3 Under Sink Water Filter Replacement, Advanced | CulliganCulligan Under Sink Replacement Filter - Basic | -Culligan US-DC1 Direct Connect Under Sink Replacement Water Filter | HubBrita Hub Replacement Water Filter Instant Powerful Countertop Water Filtration System | -Culligan Water Filter Housing,10-37/64" H US-2R |
About this item
Product details
Clear, clean, great-tasting water for drinking and cooking is easier to achieve than ever before. The Culligan Premium RC-EZ-4 EZ-Change Water Filter Replacement Cartridge reduces bad taste and odor, chlorine taste, sediment, lead, cysts such as giardia and cryptosporidium, mercury, turbidity, particulate Class I, VOC's, MTBE and chloramines. Installation is easy with the twist-on, twist-off design mechanism. Cartridge is designed for use with the following Culligan under sink water filter models: US-EZ-1, US-EZ-3, US-EZ-4, IC-EZ-1, IC-EZ-3, IC-EZ-4, and RV-EZ-3. Cartridge life lasts up to 6 months or 500-gallons, depending in water quality. Culligan makes getting cleaner water safe, easy, and convenient. With whole home filters, under-sink filters, shower filters and more, we have all your water filtration needs covered. Visit our website to schedule your free water test or an appointment with your local Culligan water expert.
- UNDER SINK WATER FITLER CARTRIDGE: Culligan Premium RC-EZ-4 Replacement cartridge for Culligan EZ-Change drinking water filter systems. Enjoy clear, great-tasting water straight from the kitchen sink.
- FRESHER TASTING WATER: Effectively filters bad taste and odor, aesthetic chlorine taste and odor, sediment, lead, cysts such as Cryptosporidium and Giardia, Mercury, Turbidity, Particulate Class I, Volatile Organic Chemicals (VOCs), MTBE, and Chloramines.
- ADDITIONAL FEATURES: Cartridge features a twist-on, twist-off connection installation designed for easy, mess-free cartridge change.
- USE WITH CULLIGAN WATER FILTER EZ STYLE SYSTEMS: For use with Culligan IC-EZ-4, US-EZ-4 under sink water filter models.
- IAPMO R & T TESTED AND CERTIFIED: Tested to NSF Standard 42 & 53.
- INCLUDED WITH PURCHASE: One RC-EZ-4 replacement cartridge.
- FILTER LIFE: Lasts up to 500 gallons or 6 months, depending on water quality.
- TRY OUR FULL LINE OF PRODUCTS: Look for all Culligan whole house, shower, and drinking water solutions. Culligan has all your water filtration needs covered, providing cleaner, healthier, safer water for your home.
Specifications
Brand
Filtration stages
Rec. use
Height
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warnings
Ingestion Hazard
Warning Text
State Chemical Disclosure
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Customer ratings & reviews
Reviews summary
- : Water tastes free of impurities.
- : Offers affordable filtration options.
Showing 1-3 of 32 reviews
Verified Purchase
Easy to install and change filters. Filters are a bit expensive but nothing cleans the water like Culligan even used Pur filters but they left a bitter taste - Culligan was perfect
Verified Purchase
technical review from water pro
I have very bad tasting water at my house so getting a filter was a must. I grew up on RO water and worked installing water systems for a while. while this filter isnt as good as an RO system it is 95% there and way cheaper and easy to install. This filter dropped my PPM in my water from 380ish to less than 10 for the first few months. if you go past their suggested change intervals (6 months) it continues to remove most of the bad taste in the water but the PPM rises up. My filter after 15 months of use was over 100 ppm and the bad taste was starting to come back. (why i ordered this replacement)
Verified Purchase
Great filter.
Very good filter. Says it filters out lots of different contaminants and the water tastes great using it. I've been using this brand for a long time with good results.






