Discount Water Filters and Air Filters at Discount Filter Store.com

When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

Undersink Water Filter Systems

Keep your kitchen space neat and tidy, while reducing contaminants in your tap water with an under sink water filter system.

The beauty of under sink water filter systems is that they neatly fit underneath your sinks and don’t rob you of valuable counter space as countertop water filters do. Unlike other filter models, with under sink water filters there are no valves or tubing cluttering your counter. Because they remain out of sight, you can install larger under sink water filter models designed to filter out additional water contaminants such as fluorides, arsenic, and nitrates.

Below you’ll find over 60+ OEM under sink water filter systems, housings and filters from some of the top brands, including Pentek®, Culligan®, Whirlpool®, Doulton®, OmniFilter®, and more.

Need help choosing the right under sink water filter system? Our experts can help you choose the perfect under sink water filter to address all of your water quality concerns, just give us a call at 1-800-277-3458.

21 Item(s)

Grid  List 

Set Descending Direction
  • W9320007 Doulton Undersink Ceramic Candle Filter Housing

    W9320007 Doulton Undersink Ceramic Candle Filter Housing

    $151.99
    MSRP: $167.57
    Save 9%
  • W9330958 Doulton SuperCarb Undersink Ceramic Candle Filter System
  • WQCFU-T-KIT Watts Triple Drinking Water Filtration System w/Kwik-Change Filter Cartridges
  • US-UF3 Culligan Ultrafiltration Drinking Water System
  • 3M Aqua-Pure AP510 Water Filter System

    AP510 3M Aqua-Pure Water Filtration System

    $141.99
    MSRP: $146.04
    Save 3%
  • 31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    $153.99
    MSRP: $183.95
    Save 16%
  • CQE-US-00324 Crystal Quest Undersink Triple Nitrate PLUS Filtration System
  • CQE-US-00320 Crystal Quest Undersink Triple Arsenic PLUS Filtration System
  • CQE-US-00316 Crystal Quest Undersink Double Fluoride Filtration System
  • CQE-US-00313 Crystal Quest Undersink Double Ceramic PLUS Water Filtration System
  • WHER25 Whirlpool Reverse Osmosis Undersink Water Filtration System
  • WHED20 Whirlpool Undersink Water Filtration System

    WHED20 Whirlpool Undersink Water Filtration System

    $105.99
    MSRP: $124.19
    Save 15%
  • W9380002 Doulton Undersink Filter System

    W9380002 Doulton HIP3 Undersink Water Filtration System

    $198.07
    MSRP: $230.08
    Save 14%
  • W9380001 Doulton Undersink Filter System

    W9380001 Doulton Undersink Water Filtration System

    $119.99
    MSRP: $154.28
    Save 22%
  • W9330962 Doulton Sterasyl Undersink Ceramic Candle Filter System
  • W9330957 Doulton UltraCarb Undersink Ceramic Candle Filter System
  • W9320004 Doulton Undersink Filter System

    W9320004 Doulton HIS Undersink Water Filtration System

    $176.16
    MSRP: $204.88
    Save 14%
  • 36005 Hydrologic SmallBoy De-Chlorinator and Sediment Filter System With Upgraded KDF
  • US-1500 Pentek Undersink Filter System with Monitor

    US-1500 Pentek Undersink Filter System with Monitor

    $166.99
    MSRP: $195.37
    Save 15%
  • US-1000 Pentek Undersink Filter System

    US-1000 Pentek Undersink Filter System

    $126.99
    MSRP: $139.71
    Save 9%
  • CBF3-S-05 OmniFilter Undersink Filter System

    CBF3-S-05 OmniFilter Undersink Water Filtration System

    $105.99
    MSRP: $108.34
    Save 2%

21 Item(s)

Grid  List 

Set Descending Direction
Scroll To Top