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

When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

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 120 total

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  • WGCHD American Plumber Undersink Water Filter Replacement Cartridge
  • HB-20-20W Harmsco Calypso Blue Replacement Filter Cartridge
  • 22010 Hydrologic BigBoy Replacement Sediment Filter

    22010 Hydrologic BigBoy Sediment Filter

    $44.99
    MSRP: $57.49
    Save 22%
  • SDC-25-2020 Hydronix Whole House Replacement Sediment Filter Cartridge
  • PX20-20 Purtrex Replacement Filter Cartridge

    PX20-20 Purtrex Replacement Water Filter

    $10.99
    MSRP: $14.99
    Save 27%
  • FPIR-BB-20 Watts Whole House Replacement Filter Cartridge
  • FPMB-BB20-10 Watts Flo-Pro Whole House Replacement Filter Cartridge
  • FPMB20-20 Watts Flo-Pro Whole House Replacement Filter Cartridge
  • GX20-20 Hytrex Replacement Filter Cartridge

    GX20-20 Hytrex Water Filter Cartridge

    $7.99
    MSRP: $11.49
    Save 30%
  • SPC-25-2020 Hydronix Pleated Sediment Water Filter

    SPC-25-2020 Hydronix Pleated Sediment Water Filter

    $14.99
    MSRP: $20.99
    Save 29%
  • FXB20RFL Filtrex Green Radial Flow Water Filter Cartridges
  • Pentek ECP20-10 Replacement Water Filter Cartridge

    ECP20-10 Pentek Replacement Filter Cartridge

    $7.99 MSRP: $9.42
    Save 15%
  • Pentek PS20-20C Whole House Replacement Sediment Water Filter
  • S1-20 Pentek Whole House Filter Replacement Cartridge

    S1-20 Pentek Whole House Filter Replacement Cartridge

    $12.99 MSRP: $17.99
    Save 28%
  • AP-GRMB-20PP-20UB Aquapure Comparable Sediment Water Filter by Tier 1
  • SDC-25-2020 Hydronix Comparable Sediment Water Filter by Tier1
  • S1-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1
  • W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • W20CLHD American Plumber Whole House Heavy Duty Filter Cartridge
  • S1-20BB Pentek Whole House Filter Replacement Cartridge

    S1-20BB Pentek Whole House Filter Replacement Cartridge

    $21.99
    MSRP: $25.34
    Save 13%
  • GAC20-BB Pentek Replacement Granular Activated Carbon Filter by Tier1
  • S1-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • W20CLA American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • WCC American Plumber Undersink Filter Replacement Cartridge

    WCC American Plumber Undersink Filter Replacement Cartridge

    $19.99
    MSRP: $26.44
    Save 24%
  • WGC478 American Plumber Undersink Compact Filter Replacement Cartridge
  • 750R-D Culligan Level 1 Undersink RV and Marine Icemaker and Drinking Water Filter
  • S1A Culligan Level 2 Whole House Filter Replacement Cartridge (2-Pack)
  • GAC1SS OmniFilter Series C Undersink Filter Replacement Cartridge
  • 801-20 Harmsco Replacement Filter Cartridge

    801-20 Harmsco Replacement Filter Cartridge

    $7.99
    MSRP: $11.49
    Save 30%
  • SDC-25-1020 Hydronix Whole House Replacement Sediment Filter Cartridge
  • GAC-10 Pentek Undersink Filter Replacement Cartridge

    GAC-10 Pentek Undersink Filter Replacement Cartridge

    $14.99
    MSRP: $19.99
    Save 25%
  • GAC-5 Pentek Replacement Filter Cartridge
  • PS20-10C Pentek Whole House Replacement Sediment Filter Cartridge
  • QC10-GACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    $20.99
    MSRP: $24.60
    Save 15%
  • PX20-9-78 Purtrex Replacement Filter Cartridge

    PX20-9-78 Purtrex Water Filter Cartridge

    $4.09
    MSRP: $9.99
    Save 59%
  • RS3-SS OmniFilter Whole House Filter Replacement Cartridge
  • FPMB20-978 Watts Flo-Pro Replacement Filter Cartridge

    FPMB20-978 Watts Flo-Pro Replacement Water Filter

    $3.99
    MSRP: $5.16
    Save 23%
  • GX20-9-78 Hytrex Replacement Filter Cartridge

    GX20-9-78 Hytrex Water Filter Cartridge

    $6.89
    MSRP: $8.61
    Save 20%
  • 800R OmniFilter Quick Change Replacement Filter Cartridge
  • PF-300S OmniFilter Water Pitcher Replacement Cartridge
  • PF-300T OmniFilter Water Pitcher Replacement Cartridge (3-Pack)
  • PF-500 OmniFilter 14-cup Water Pitcher

    PF-500 OmniFilter Water Filter Pitcher (14-Cup)

    $30.99
    MSRP: $49.99
    Save 38%
  • R800 OmniFilter Quick Change Inline Refrigerator Filter
  • RS3DS/RS12-DS3-S06 OmniFilter Whole House Replacement Filter Cartridge (2-Pack)
  • SFM2 OmniFilter Undersink Water Filter System

    USM2-S-S06 OmniFilter Undersink Water Filtration System

    $35.99
    MSRP: $48.29
    Save 25%
  • CC-10 Pentek Undersink Filter Replacement Cartridge

    CC-10 Pentek Undersink Filter Replacement Cartridge

    $15.39
    MSRP: $21.99
    Save 30%
  • GAC-10 Pentek Comparable Replacement Cartridge by Tier1

    GAC-10 Pentek Comparable Replacement Cartridge by Tier1

    $12.99
    MSRP: $17.99
    Save 28%

Items 1 to 48 of 120 total

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