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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!
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Water Filtration Systems & Filters

Discount Filter Store carries a wide variety of water filters and filtration systems to make sure that you have clean water everywhere you need it. We offer camping water filters, RV filters, water bottles for travelers on the go. Purify your office or home’s drinking water with countertop filter systems, commercial grade filters, and whole house filter systems. Our filters are protected by our 100% Price Match Guarantee. We are happy to offer you the lowest possible price on our filters, matching any lower price listed by competitors.

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  1. WP-5BB97P Pentek Replacement Filter Cartridge

    WP-5BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $19.99
  2. 47-55711G2 Water Factory Systems Whole House Replacement Filter Cartridge

    47-55711G2 Water Factory Systems Whole House Replacement Filter Cartridge

    Fits 3M Cuno Water Factory FaucetMATE FM-2 Lead Plus and FM-350 DWS systems Learn More
    $41.99 Retail Price:  $52.89
  3. WHKF-DB1 Whirlpool Undersink Replacement Filter Cartridge

    WHKF-DB1 Whirlpool Undersink Replacement Filter Cartridge

    Fits the Whirlpool WHKF-DUF Under Sink Filter Housing Learn More
    $15.99 Retail Price:  $17.34
  4. Whirlpool WHKF-DB2 Undersink Replacement Water Filter Cartridge

    WHKF-DB2 Whirlpool Undersink Replacement Filter Cartridge

    Fits the Whirlpool WHKF-DUF Under Sink Filter Housing Learn More
    $21.99
  5. Whirlpool WHKF-GAC Undersink Replacement Water Filter Cartridge

    WHKF-GAC Whirlpool Undersink Replacement Filter Cartridge

    Fits the Whirlpool WHKF-DUF Under Sink Filter Housing Learn More
    $10.99 Retail Price:  $20.34
  6. WHKF-IMPLUS Whirlpool Inline Filter System

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