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

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  • 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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35 Item(s)

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  • 22110 Hydrologic SmallBoy Replacement Carbon Filter - Green
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    $13.99
    MSRP: $19.99
    Save 30%
  • AF-10-1053 Aries Specialty Cartridge Hydrogen Sulfide Removal
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • GAC-20 Pentek Comparable Granular Activated Carbon Water Filter by Tier1
  • RFC-93 Whole House Filter Replacement Cartridge by Tier1
  • W5CIP478 American Plumber Undersink Compact Filter Replacement Cartridge (2-Pack)
  • WICA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings
  • IL-IM-01 3M Aqua-Pure Inline Water Filter

    IL-IM-01 3M Aqua-Pure Inline Water Filter Cartridge

    $18.99
    MSRP: $24.14
    Save 21%
  • 750R-D Culligan Level 1 Undersink RV and Marine Icemaker and Drinking Water Filter
  • IC-100A Culligan Level 1 Disposable Inline Filter

    IC-100A Culligan Level 1 Disposable Inline Filter

    $12.99
    MSRP: $16.78
    Save 23%
  • IC-750 Culligan Inline Filter
  • RC-EZ-1 Culligan Level 1 Easy-Change Inline Filter Replacement Cartridge
  • IC-101L Pentek Inline Filter
  • QC10-GACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • R200 OmniFilter Inline Filter System

    R200 OmniFilter Inline Water Filtration System

    $14.99
    MSRP: $16.09
    Save 7%
  • MAXETW-975 Watts C-MAX Replacement Filter Cartridge

    MAXETW-975 Watts C-MAX Replacement Water Filter Cartridge

    $12.59
    MSRP: $18.99
    Save 34%
  • WHKF-IMTO Whirlpool Inline Filter

    WHKF-IMTO Whirlpool Inline Filter

    $11.99
    MSRP: $14.94
    Save 20%
  • PLEKX-10-10 KX Technologies PlekX Whole House Filter Replacement Cartridge
  • OMNIPURE-K5633CC

    OMNIPURE-K5633CC

    $15.99
    MSRP: $17.24
    Save 7%
  • OMNIPURE-K5633JJ

    OMNIPURE-K5633JJ

    $15.79
    MSRP: $18.85
    Save 16%
  • OMNIPURE-K5633KK

    OMNIPURE-K5633KK

    $14.39
    MSRP: $18.85
    Save 24%
  • OMNIPURE-OMB934-1L

    OMNIPURE-OMB934-1L

    $16.99
    MSRP: $21.38
    Save 21%
  • OMNIPURE-Q5505

    OMNIPURE-Q5505

    $12.09
    MSRP: $15.51
    Save 22%
  • OMNIPURE-Q5620

    OMNIPURE-Q5620

    $19.99
    MSRP: $25.29
    Save 21%
  • OMNIPURE-Q5633

    OMNIPURE-Q5633

    $17.89
    MSRP: $20.69
    Save 14%
  • OMNIPURE-Q5640

    OMNIPURE-Q5640

    $16.79
    MSRP: $20.69
    Save 19%
  • OMNIPURE-Q5786

    OMNIPURE-Q5786

    $19.99
    MSRP: $25.29
    Save 21%
  • PENTEK-C1

    PENTEK-C1

    $14.99
    MSRP: $19.99
    Save 25%
  • PENTEK-CBC-5

    PENTEK-CBC-5

    $10.29
    MSRP: $16.55
    Save 38%
  • OMNIPURE-E5733

    OMNIPURE-E5733

    $15.69
    MSRP: $19.54
    Save 20%
  • OMNIPURE-Q5405

    OMNIPURE-Q5405

    $12.99
  • TIER1-GAC-20

    TIER1-GAC-20

    $15.99
    MSRP: $20.99
    Save 24%
  • PENTEK-655130-43

    PENTEK-655130-43

    $13.99
    MSRP: $18.99
    Save 26%

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