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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Items 1 to 48 of 541 total

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  • CL6ROT33-A Omnipure GAC Inline Water Filter
  • WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    $10.99
    MSRP: $14.99
    Save 27%
  • DuPont WFPTC100X Water Pitcher Replacement Cartridge High Protection
  • The Pentek C1 comparable Whole House Carbon Water Filter by Tier1

    Pentek C1 Comparable Carbon Block Water Filter by Tier1

    $10.99 MSRP: $19.99
    Save 45%
  • WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1
  • SWC-25-2005 Hydronix Comparable String Wound Sediment Water Filter (5 micron) by Tier1
  • SWC-25-2005 Hydronix Comparable String Wound Sediment Water Filter (5 micron) by Tier1
  • SWC-25-2010 Hydronix Comparable String Wound Sediment Water Filter (5 micron) by Tier1
  • SB-3 Squeezable Filtered Sport Bottle (27 oz.)

    SB-3 WaterWay Squeezable Filtered Sport Bottle (27 oz.)

    $11.39
    MSRP: $28.99
    Save 61%
  • AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    $11.39
    MSRP: $16.99
    Save 33%
  • EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    $11.99
    MSRP: $20.99
    Save 43%
  • FXWTC GE Comparable Whole House Water Filter 2-Pack by Tier1
  • AP-GRMB-05PP-20UB Whole House Replacement Filter by 3M Aqua-Pure
  • AP-GRMB-10PP-20UB Whole House Replacement Cartridge by 3M Aqua-Pure
  • AP-GRMB-20PP-20UB Whole House Water Filter Replacement Cartridge
  • AP-GRMB-50PP-20UB Whole House Water Filter Replacement Cartridge
  • K2528-KK Omnipure GAC Inline Water Filter

    K2528-KK Omnipure GAC Inline Water Filter

    $11.99
    MSRP: $17.99
    Save 33%
  • Pentek EP-10 Replacement Water Filter Cartridge

    Pentek EP-10 Filter Cartridge Replacement

    $11.99 MSRP: $15.34
    Save 22%
  • Pentek P1-20 Whole House Water Filter Replacement Cartridge
  • P5-10BB Tier1 Sediment Water Filter

    P5-10BB Tier1 Sediment Water Filter

    $11.99 MSRP: $24.64
    Save 51%
  • TO1SS OmniFilter Whole House Water Filter
  • W5CIP American Plumber Whole House Carbon Water Filter by Tier1
  • W20CLHD American Plumber Whole House Sediment Filter by Tier1
  • ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • D-10 Twin Culligan Comparable Whole House Carbon Water Filter by Tier1
  • D-15 Culligan Whole Comparable House Carbon Water Filter by Tier1
  • WH-STDCW-F02 Filtrete Comparable Whole House Carbon Filter by Tier1
  • TO1DS OMNIFILTER Comparable Whole House Carbon Water Filter by Tier1 (2-Pack)
  • C1 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • SPC-25-2030 Hydronix Comparable Sediment Water Filter by Tier1
  • SPC-25-2030 Hydronix Comparable Sediment Water Filter by Tier1
  • SPC-25-2050 Hydronix Comparable Sediment Water Filter by Tier1
  • R30-20 Pentek Comparable Sediment Water Filter by Tier1

    R30-20 Pentek Comparable Sediment Water Filter by Tier1

    $11.99 MSRP: $23.99
    Save 50%
  • D-25 Culligan Under Sink Water Filter
  • SWC-45-1030 Hydronix Comparable String Wound Sediment Water Filter (30 micron) by Tier1
  • WC-45-1030 Hydronix Comparable String Wound Sediment Water Filter (30 micron) by Tier1
  • WS-21 Water Sentinel Misting System Replacement Filter

    WS-21 Water Sentinel Misting System Filter

    $12.99
    MSRP: $20.69
    Save 37%
  • RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    $12.99
    MSRP: $17.99
    Save 28%
  • 22160 Triton Replacement Sediment Filter Cartridge by Hydrologic
  • 255541-43 Pentek Inline Water Filter Replacement
  • CP5-BBS-D Culligan Comparable Whole House Water Filter by Tier1
  • Braun KWF2 Comparable Coffee Water Filter Replacement by Tier1 (2-Pack)
  • CP5-BBS-D Culligan Comparable Whole House Water Filter by Tier1
  • CQE-RC-04033 Crystal Quest Comparable Whole House Water Filter by Tier1
  • HB-10-5W Harmsco Comparable Whole House Sediment Water Filter by Tier1

Items 1 to 48 of 541 total

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