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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  • 3M Aqua-Pure APDWS1000 Undersink Water Filter System

    APDWS1000 Undersink Water Filter System by 3M Aqua-Pure

    $394.99
    MSRP: $397.34
    Save 1%
  • 3M Aqua-Pure AP22 Under Sink Water Filter
  • AP-DW80/90 3M Aqua-Pure Water Filter Set

    AP-DW80/90 3M Aqua-Pure Pre and Post Filter Set

    $116.99
    MSRP: $173.90
    Save 33%
  • 3M Aqua-Pure AP-DW85 Water Filter Replacement Cartridge
  • C-COMPLETE 3M Aqua-Pure Undersink Water Filter
  • C-CYST-FF 3M Aqua-Pure Undersink Water Filter
  • 3M AquaPure 3MFF101 Whole House Water Filter Cartridge

    3MFF101 3M Aqua-Pure Replacement Water Filter Cartridge

    $200.99
    MSRP: $209.29
    Save 4%
  • 3M AquaPure 3MFF100 Drinking Water Filter System

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