Culligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink
Culligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink
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Culligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink

4.8 stars out of 48 reviews
(4.8)|
48 ratings

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.
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Culligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink
Culligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink
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Culligan Water Filter Housing,10-37/64" H US-2R
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Comparison Chart:
Filtration stages1Culligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink2Culligan RC-EZ-3 Under Sink Water Filter Replacement, Advanced-Culligan Under Sink Replacement Filter - Basic-Culligan US-DC1 Direct Connect Under Sink Replacement Water Filter1Brita Hub Replacement Water Filter Instant Powerful Countertop Water Filtration System-Culligan Water Filter Housing,10-37/64" H US-2R
Rec. useResidentialCulligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under SinkResidentialCulligan RC-EZ-3 Under Sink Water Filter Replacement, AdvancedResidentialCulligan Under Sink Replacement Filter - BasicResidentialCulligan US-DC1 Direct Connect Under Sink Replacement Water FilterResidentialBrita Hub Replacement Water Filter Instant Powerful Countertop Water Filtration SystemResidentialCulligan Water Filter Housing,10-37/64" H US-2R
Height9 inCulligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink10.13 inCulligan RC-EZ-3 Under Sink Water Filter Replacement, Advanced-Culligan Under Sink Replacement Filter - Basic11.22 inCulligan US-DC1 Direct Connect Under Sink Replacement Water Filter2.8 inBrita Hub Replacement Water Filter Instant Powerful Countertop Water Filtration System11.61 inCulligan Water Filter Housing,10-37/64" H US-2R
Product lineCulliganCulligan RC-EZ-4 EZ-Change Replacement Cartridge – Premium Water Filter for Under Sink-Culligan RC-EZ-3 Under Sink Water Filter Replacement, AdvancedCulliganCulligan Under Sink Replacement Filter - Basic-Culligan US-DC1 Direct Connect Under Sink Replacement Water FilterHubBrita Hub Replacement Water Filter Instant Powerful Countertop Water Filtration System-Culligan Water Filter Housing,10-37/64" H US-2R
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Customer ratings & reviews

4.8 out of 5 stars
stars48 ratings32 reviews
How item rating is calculated

Reviews summary

Pros
  • : Water tastes free of impurities.
  • : Offers affordable filtration options.
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Showing 1-3 of 32 reviews

Oct 20, 2025
Asd
5 out of 5 stars review

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

Helpful?32PFXLNXJ3EX13074314
Feb 27, 2025
John
5 out of 5 stars review

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)

Incentivized Review
Helpful?32PFXLNXJ3EX13074314
May 2, 2025
anonymous
5 out of 5 stars review

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.

Incentivized Review
Helpful?32PFXLNXJ3EX13074314