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Culligan US-EZ-4 Easy-Change Undersink Water Filtration System (Level 4)

$129.99 List Price $185.99 Save 30%
Availability: In Stock - Free Shipping
  • Ships fast!
  • Reduces chlorine, lead, mercury and more
  • Serve great tasting, high quality drinking water!
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For up to six months between filter changes, the Culligan US-EZ-4 Easy-Change undersink water filtration system will reduce up to 99% of chlorine, mercury, lead and more before these impurities can impact your water quality. Quick to install, this genuine OE system ensures you pour and serve only the cleanest tasting water! Comes complete with a lead free faucet, replacement cartridge and everything else needed for set-up. Order the Culligan US-EZ-4 Easy-Change undersink water filtration system from us today.
Package Qty1
Used In BrandsCulligan
Manufacturer's IdUS-EZ-4
Actual Size (in)8 3/4 inches (length) x 3 3/4 inches (width) x 14 inches (height)
Actual Size (cm)22.23 x 9.525 x 35.56
Filter Life (gallons)500
Filter Life (liters)1,892.71
Filter Life (months)6 months
Micron Rating (Nominal)0.5
Operating Pressure (psi)30 - 100
Operating Temperature (°F)40 - 100
Operating Temperature (°C)4.4 - 37.8
Flow Rate (gpm)0.5
Flow Rate (lpm)1.893
Fitting Size (inches)1/4 inch
Country of ManufactureChina
CertificationsNSF/ANSI Standard 42, NSF/ANSI Standard 53
Warranty Guarantee2 year limited warranty
IncludesOne RC-EZ-4 Level 4 filter cartridge, Filter head with built-in bracket, Mounting screws, Water supply adapter, Lead-free faucet and fittings, 1/4 inch plastic tubing, Cartridge change reminder sticker, Installation and Operating Instructions

Reduced Contaminants

The CULLIGAN-US-EZ-4 reduces the following contaminants:

  • Bad Taste and Odor
  • Chloramines
  • Chlorine Taste & Odor 98.00%
  • Cysts 99.99%
  • Lead 99.30%
  • Mercury at pH 6.5 96.70%
  • Mercury at pH 8.5 96.60%
  • Methyl tertiary butyl ether (MTBE) 96.90%
  • Particulates (Class I) 99.90%
  • Sediment
  • Turbidity 98.00%
  • VOCs 99.80%

The CULLIGAN-US-EZ-4 is comparable with the following part numbers

4294138 RC-EZ-1
US-EZ-4 1019054

Installation Guide


  1. The battery is installed behind the faucet. There is a lip there with a battery insert. Putting the battery there powers the indicator light on the faucet