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 87 total

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  • SPC-25-2020 Hydronix Pleated Sediment Water Filter

    SPC-25-2020 Hydronix Pleated Sediment Water Filter

    $14.99
    MSRP: $20.99
    Save 29%
  • TIER1-GAC-10 Pentek Undersink Replacement Cartridge by Tier1
  • TIER1-GAC-20BB Replacement Granular Activated Carbon Filter by Tier1
  • S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • W20CLA American Plumber Comparable Whole House Water Filter by Tier1
  • RS1SS OmniFilter Comparable Whole House Water Filter by Tier1
  • WFDW120009W DuPont Universal Drinking Water Filter System
  • WFHD13001B DuPont Universal Heavy Duty Whole House Filtration System
  • WFDWC20001 DuPont Universal Drinking Water Carbon Block Cartridge
  • 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%
  • WSQC-2 WaterSentinel Reverse Osmosis Carbon GAC Filter Cartridge
  • WB-HB-20-20W Harmsco Pleated Commercial Water Filter Cartridge
  • Hydronix SDC-45-1020 Sediment Filter Cartridge
  • SDC-45-2020 Hydronix Sediment Water Filter

    SDC-45-2020 Hydronix Sediment Water Filter Cartridge

    $20.99 MSRP: $22.99
    Save 9%
  • SPC-25-1020 Hydronix Sediment Water Filter

    SPC-25-1020 Hydronix Pleated Sediment Water Filter

    $6.99 MSRP: $10.91
    Save 36%
  • Hydronix SPC-45-1020 Pleated Sediment Water Filter
  • SPC-45-2020 Hydronix Pleated Sediment Filter
  • Pentek ECP20-20 Replacement Water Filter Cartridge

    ECP20-20 Pentek Replacement Filter Cartridge

    $15.99 MSRP: $21.99
    Save 27%
  • Pentek ECP20-20BB Replacement Water Filter Cartridge

    Pentek ECP20-20BB Pleated Sediment Water Filter Cartridge

    $24.99 MSRP: $28.39
    Save 12%
  • Pentek ECP20-BB Replacement Water Filter Cartridge

    ECP20-BB Pentek Replacement Filter Cartridge

    $15.99 MSRP: $17.70
    Save 10%
  • GAC20-BB Pentek Whole House Water Filter

    GAC20-BB Pentek Whole House Filter Replacement Cartridge

    $44.99 MSRP: $66.31
    Save 32%
  • Pentek S1 Pleated Whole House Sediment Filter
  • RS1-SS OmniFilter Whole House Water Filter
  • SDC-45-1020 Hydronix Comparable Sediment Water Filter by Tier1
  • P20-20 Tier1 Sediment Water Filter

    P20-20 Tier1 Sediment Water Filter

    $6.99 MSRP: $9.19
    Save 24%
  • Tier1 P20-20BB Whole House Replacement Sediment Filter Cartridge
  • Pentek S1-BB Replacement Water Filter Cartridge

    Pentek S1-BB Water Filter Cartridge Replacement

    $14.99 MSRP: $17.99
    Save 17%
  • S1 Pentek Comparable Whole House Water Filter by Tier1

    S1 Pentek Comparable Whole House Water Filter by Tier1

    $6.99 MSRP: $8.99
    Save 22%
  • S1-20BB Pentek Comparable Whole House Water Filter by Tier1

    S1-20BB Pentek Comparable Whole House Water Filter by Tier1

    $16.99 MSRP: $26.99
    Save 37%
  • W20CLHD American Plumber Whole House Sediment Filter by Tier1
  • ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • FPMB-BB20-10 Watts Comparable Whole House Sediment Water Filter by Tier 1
  • P25-20 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • PD-25-20 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • PS20-20C Pentek Comparable Whole House Sediment Water Filter by Tier1
  • PX20-20 Purtrex Comparable Whole House Sediment Water Filter by Tier1
  • PMB20-20 Watts Comparable Whole House Sediment Water Filter by Tier1
  • 22010 Hydrologic Comparable Whole House Water Filter by Tier1
  • D-25 Culligan Comparable Undersink Replacement Cartridge by Tier1
  • WCC Amercian Plumber Comparable Undersink Replacement Cartridge by Tier1
  • CC-10 Pentek Comparable Undersink Replacement Cartridge by Tier1
  • WRC25HD20 American Plumber Comparable Granular Activated Carbon Filter by Tier1
  • GAC20-BB Pentek Comparable Granular Activated Carbon Filter by Tier1
  • AP817-2 Aquapure Comparable Granular Activated Carbon Filter by Tier1
  • RFC20-BB Pentek Comparable Granular Activated Carbon Filter by Tier1
  • FXB20RFL Filtrex Comparable Granular Activated Carbon Filter by Tier1
  • ECP20-20BB Pentek Comparable Whole House Water Filter by Tier1
  • S1-20BB-Pentek Comparable Whole House Water Filter by Tier1

    S1-20BB-Pentek Comparable Whole House Water Filter by Tier1

    $16.99 MSRP: $26.99
    Save 37%

Items 1 to 48 of 87 total

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