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

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Undersink Water Filters & Systems

Transform the water served from your tap or faucet into a premium quality beverage with an under sink water filter.

With over 250+ under sink water filter systems and undersink replacement filters available in a wide range of flow rates, colors/finishes, prices, and filter life’s, we’ve got an undersink filter for every home. Choose from some of the best under sink water filters including the Crystal Quest 7 Stage Under Sink Fluoride Water Filter System, the Culligan® Level-4 Easy Change Undersink Drinking Water System, and the 3M Filtrete™ Undersink Advanced Water Filter System.

Not sure, which under the sink water filter is right for your home? Give us a call 1-800-277-3458; our experts will help you choose the perfect under sink filter to address all of your water quality concerns, no matter how monumentous they may seem.

Note: All of our under sink filters and under sink water filter systems are backed by our 100% Price Match Guarantee. Meaning if you find a particular under sink water filter for less than our listed price, we’ll match the competitors lower price. Shopping for home water filters has never been easier.

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  • FQSVF / FQSLF GE SmartWater Undersink Water Filter Replacement Cartridge Set By Tier1
  • FQK2J GE SmartWater Undersink Water Filter Replacement Cartridge Set by Tier1
  • 3M Aqua-Pure AP-250R Under Sink Water Filter

    AP-250R 3M Aqua-Pure Undersink Water Filter Cartridge

    $30.79
    MSRP: $47.99
    Save 36%
  • 3M Aqua-Pure AP-DW70 Undersink Filter Replacement Cartridge

    AP-DW70 3M Aqua-Pure Undersink Filter Replacement Cartridge

    $47.99
    MSRP: $56.34
    Save 15%
  • EP35R 3M Aqua-Pure Water Filter Cartridge

    EP35R 3M Aqua-Pure Replacement Water Filter Cartridge

    $118.99
    MSRP: $158.99
    Save 25%
  • WI-BG3000C Body Glove Replacement Filter Cartridge

    WI-BG3000C Body Glove Replacement Filter Cartridge

    $158.99
    MSRP: $192.95
    Save 18%
  • WI-BG3000R Body Glove Replacement Filter Cartridge

    WI-BG3000R Body Glove Replacement Filter Cartridge

    $145.99
    MSRP: $174.95
    Save 17%
  • CB3 OmniFilter Undersink Filter Replacement Cartridge
  • D-10-TWIN Culligan Level 1 Undersink Filter Replacement Cartridge (2-Pack)
  • D-15 Culligan Level 1 Undersink Filter Replacement Cartridge (2-Pack)
  • NCP-10 Culligan Whole House Filter Replacement Cartridge
  • RWC-5 Culligan Level 1 Undersink Filter Replacement Cartridge
  • EV9300-35 Everpure proseries 3500 Replacement Filter Cartridge

    EV9300-35 Everpure proseries 3500 Replacement Filter Cartridge

    $119.99
    MSRP: $170.99
    Save 30%
  • CBF3-S-05 OmniFilter Undersink Filter System

    CBF3-S-05 OmniFilter Undersink Water Filtration System

    $105.99
    MSRP: $108.34
    Save 2%
  • GAC-5 Pentek Replacement Filter Cartridge
  • FM-350-DWS Water Factory Systems FaucetMATE Faucet Filter System
  • Whirlpool WHKF-DB2 Undersink Replacement Water Filter Cartridge
  • WHEEDF Whirlpool UltraEase Water Filter Pack

    WHEEDF Whirlpool UltraEase Water Filter Pack

    $47.99
    MSRP: $59.79
    Save 20%
  • US-UF3 Culligan Ultrafiltration Drinking Water System
  • US-UF3R Culligan Ultrafiltration Replacement Water Filter Cartridge Set
  • WHED20 Whirlpool Undersink Water Filtration System

    WHED20 Whirlpool Undersink Water Filtration System

    $105.99
    MSRP: $124.19
    Save 15%
  • BG-3000 Body Glove Water Filtration System

    BG-3000 Body Glove Water Filtration System

    $410.99
    MSRP: $516.95
    Save 20%
  • 7012333 Sub-Zero UC-15I Undercounter Icemaker Comparable Replacement Water Filter by Tier1
  • FQROPF GE Profile SmartWater Ultra Plus Reverse Osmosis Replacement Filter Set By Tier1

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