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

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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. Pentek EPM-BB Replacement Water Filter Cartridge

    Pentek EPM-BB Water Filter Cartridge Replacement

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More

    As Low As $23.00 Per Filter

  2. RFC-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1

    RFC-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1

    Fits standard 20 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

  3. Q5621 Omnipure Replacement Filter Cartridge

    Q5621 Omnipure Replacement Filter Cartridge

    Fits the Omnipure Q-Series Twist-Tap Filter Heads Learn More
    $21.09 MSRP:  $27.99
  4. Q5621-P Omnipure Replacement Filter Cartridge

    Q5621-P Omnipure Replacement Filter Cartridge

    Fits the Omnipure Q-Series Twist-Tap Filter Heads Learn More
    $23.19 MSRP:  $35.99
  5. CB-45-1010 Hydronix Replacement Whole House Carbon Water Filter

    CB-45-1010 Hydronix Replacement Whole House Carbon Water Filter

    Fits in housings that accept 10 x 4-1/2 inch replacement filters Learn More
    $24.39
  6. 655148-43/DFX-CB-20 Pentek Diamond Polyspun Carbon Block Replacement

    655148-43/DFX-CB-20 Pentek Diamond Polyspun Carbon Block Replacement

    Fits housings that take filters sized 20 x 2-1/2 Learn More
    $23.99 MSRP:  $30.99

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