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!

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  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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  • You’re guaranteed to find expert help!

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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 175 total

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  • 55897C Halsey-Taylor Water Sentry VII Drinking Fountain Filter
  • W9222900 Doulton Ceramic Water Filter
  • W9222909 Doulton Imperial SuperCarb OBE Replacement Element
  • CL6ROT33-A Omnipure GAC Inline Water Filter
  • IC10-14C Coconut GAC Inline Water Filter (1/4-inch FPT)
  • 22160 Triton Replacement Sediment Filter Cartridge by Hydrologic
  • K2586-KK Omnipure Inline Water Filter

    K2586-KK Omnipure Inline Water Filter

    $14.29
    MSRP: $20.99
    Save 32%
  • ICF-2512-ALK Hydronix Inline Coconut Carbon Filter Cartridge
  • CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    $15.39
    MSRP: $23.99
    Save 36%
  • DuPont WFQTR130004 Quick Twist Refrigerator/Icemaker Filter System
  • K2528-KK Omnipure GAC Inline Water Filter

    K2528-KK Omnipure GAC Inline Water Filter

    $11.99
    MSRP: $17.99
    Save 33%
  • Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge
  • NCP-20BB Pentek Whole House Filter Replacement

    NCP-20BB Pentek Whole House Filter Replacement Cartridge

    $34.99 MSRP: $48.81
    Save 28%
  • EP5-10BB Tier1 Carbon Block Water Filter

    EP5-10BB Tier1 Carbon Block Water Filter

    $22.99 MSRP: $26.34
    Save 13%
  • Everpure EV9618-02 Comparable Food Service Replacement Filter by Tier1
  • TS-101L Pentek Comparable Granular Activated Carbon Inline Water Filter by Tier1
  • K2333-KK Omnipure Inline Coconut Carbon Water Filter Replacement by Tier1
  • K2533-KK Omnipure Inline Coconut Carbon Water Filter Replacement by Tier1
  • K5633JJ Omnipure Inline Coconut Carbon Water Filter Replacement by Tier1
  • K2528-KK Omnipure Comparable Inline Coconut Carbon Water Filter Tier1
  • IC-101L Pentek Comparable Granular Activated Carbon Inline Water Filter 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
  • EP-BB Pentek Comparable Carbon Block Water Filter by Tier1

    EP-BB Pentek Comparable Carbon Block Water Filter by Tier1

    $22.99 MSRP: $26.34
    Save 13%
  • EV9618-02 Everpure Comparable Food Service Replacement Filter by Tier1
  • EV9618-01 Everpure Comparable Food Service Replacement Filter by Tier1
  • EV9618-06 Everpure Comparable Food Service Replacement Filter by Tier1
  • E5420-P-1M-SB Omnipure Comparable Food Service Replacement Filter by Tier1
  • AP317 Aquapure Comparable Food Service Replacement Filter by Tier1
  • EP-5 Pentek Replacement Filter Cartridge

    EP-5 Pentek Replacement Filter Cartridge

    $7.19
    MSRP: $11.99
    Save 40%
  • DW-2000-RB American Plumber Replacement Filter Cartridge

    DW-2000-RB American Plumber Replacement Filter Cartridge

    $59.99
    MSRP: $61.28
    Save 2%
  • DW-200-R American Plumber Undersink Filter Replacement Cartridge
  • WIC-6A American Plumber Inline Icemaker Filter
  • WICSA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings
  • 110194 Amway eSpring Replacement Filter Cartridge
  • 3M Aqua-Pure AP717 Inline Water Filter

    AP717 3M Aqua-Pure Inline Filter System

    $25.99
    MSRP: $34.49
    Save 25%
  • EP15 3M Aqua-Pure Whole House Water Filter

    EP15 3M Aqua-Pure Whole House Water Filter Cartridge

    $69.99
    MSRP: $82.79
    Save 15%
  • EP25 3M Aqua-Pure Whole House Water Filter

    EP25 3M Aqua-Pure Whole House Water Filter Cartridge

    $91.99
    MSRP: $111.54
    Save 18%
  • AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    $28.99
    MSRP: $32.19
    Save 10%
  • CB1 OmniFilter Undersink Filter Replacement Cartridge

    CB1-SS6-S06 OmniFilter Undersink Water Filter Cartridge

    $34.99
    MSRP: $47.99
    Save 27%
  • CQE-RC-04008 Crystal Quest Arsenic Filter Cartridge

    CQE-RC-04008 Crystal Quest Arsenic Filter Cartridge

    $74.99
    MSRP: $103.99
    Save 28%
  • CQE-RC-04051 Crystal Quest Arsenic Multi Replacement Filter Cartridge

Items 1 to 48 of 175 total

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