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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. EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    Fits most standard 20 x 4.5-inch housings Learn More
    $43.99 Retail Price:  $47.99
  2. 3M Aqua-Pure AP817 Whole House Water Filter Cartridge

    AP817 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $49.99
  3. FXHTC GE SmartWater Whole House Filter Replacement Cartridge

    FXHTC GE SmartWater Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $41.99 Retail Price:  $42.54
  4. 22006 Hydrologic BigBoy Replacement Carbon Filter - Green

    22006 Hydrologic BigBoy Carbon Filter (Green)

    Regular Price: $80.99

    Special Price: $45.05

  5. EPM-20BB Pentek Whole House Filter Replacement Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek 20-inch Big Blue and other heavy-duty filter housings Learn More
    $44.99 Retail Price:  $54.04
  6. FLOPLUS-10BB Pentek Replacement Filter Cartridge

    FLOPLUS-10BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $45.99 Retail Price:  $48.52
  7. GAC20-BB Pentek Whole House Filter Replacement Cartridge

    GAC20-BB Pentek Whole House Filter Replacement Cartridge

    Fits any heavy duty housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More
    $45.99 Retail Price:  $56.80
  8. EP-20BB Pentek Replacement Filter Cartridge

    EP-20BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $48.99
  9. CBC-10BB-WF Tier1 Water Filter Cartridge

    CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    Fits filtration system housings that accepts 10 x 4.5 inch cartridges Learn More
    $40.99 Retail Price:  $43.69
  10. Sprite HO2-BN High Output Universal Shower Filter (Brushed Nickel)

    Sprite HO2-BN High Output Universal Shower Filter (Brushed Nickel)

    Fits most showers Learn More
    $49.99 Retail Price:  $59.79
  11. Sprite HO2-CM High Output Universal Shower Filter (Chrome)

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