iSpring CU-A4 4-Stage Ultrafiltration Drinking Water System with Sediment, UF, KDF, and Activated Carbon Filtration Media

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ITEM# 18889415
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ITEM#: 18889415

Install this four-stage water filtration system under the counter to reduce particulate matter, chlorine, bacteria, and other contaminants from your drinking water. The tankless system operates using existing water pressure and delivers the purified water through the included chrome faucet. Turn the handle to fill your glass or refillable water bottle with better tasting water.

  • Four-stage system removes particulate matter, microorganisms, chlorine, and bad taste from water
  • Kit includes filtration system, tubing and adapter, four filters, and instruction manual
  • 5-micron filter removes sediment from water during the first stage
  • Second stage 1-micron filter removes more sediment, bacteria, and high molecular weight materials
  • Third stage KDF filter removes chlorine, pesticides, organic matter, and bad tastes
  • Fourth stage carbon filter removes residual chlorine and odors
  • Includes pure water dispensing faucet

According to Federal Law Magnuson-Moss Warranty Act (P.L. 93-637) All Appliance manufacturers must be given the opportunity to attempt to repair any of their appliances before it can be returned or exchanged. For more information please click here.


Material Metal, Plastic
Type Water Filtration System
Assembly Assembled
Primary Filtration Type Carbon
Dimensions 10.5x4.5x12.5 in.
Warranty 1 year Manufacturer
Model Number CU-A4
Country of Origin United States
  • Perfect System for Refrigerators
    Verified Purchase

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    Purchased 6 months ago and I am very satisfied with the performance. The water in Northern Virginia is nasty and heavily chlorinated but this system removes all of the foul odor and taste. I mounted the 4 filters on the wall behind the refrigerator and connected it the refrigerator water supply and the connection. It does require the purchase of 2 1/2 inch compression nuts found at any hardware store. iSpring also has a kit. The whole process took about an hour. The design of this filter system is perfect for low pressure water supply. I now use the water dispenser on the refrigerator for all of my water. Would definitely buy again!

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  • Verified Purchase

    This user earned $2.00 in rewards for writing this review.Learn More

    This is a great under sink water filtration system for the cost. It arrived promptly, there were no issues with the professional installation and the water seems to be very clean for drinking and cooking.

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  • Great water flow.
    Verified Purchase

    This user earned $2.00 in rewards for writing this review.Learn More

    Very easy to install and it works great. Great water flow compared to the reverse osmosis filter system that I was using. And no wasting water, unlike the reverse osmosis system.

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  • Verified Purchase

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Questions & Answers

  • Q:

    "Why did you choose this product?"

    • A:

      It looks like it will do a great job with the 4 filters.

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Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
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FINAL SALE EXCLUSION: Items marked as FINAL SALE are not returnable unless the problem you experience is the result of our error.

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** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.