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.

Items 1 to 48 of 2182 total

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  • TO1SS OmniFilter Whole House Water Filter
  • 55897C Halsey-Taylor Water Sentry VII Drinking Fountain Filter
  • 67401 Aquamira Water Purifier Tablets (24-Pack)

    67401 Aquamira Water Purification Tablets (24-Pack)

    $12.95
    MSRP: $17.19
    Save 25%
  • W9125010 Doulton Specialty Replacement Filter Cartridge
  • DOULTON-W9222900

    DOULTON-W9222900

    $26.05
    MSRP: $52.73
    Save 51%
  • DOULTON-W9222909

    DOULTON-W9222909

    $34.05
    MSRP: $59.71
    Save 43%
  • WS01-WH Filtrete Water Station Filtered Water Bottle Filling Station
  • 55898C Halsey-Taylor Drinking Fountain Filter Replacement Cartridge

    55898C Halsey-Taylor Water Filter Cartridge Replacement

    $88.99
    MSRP: $140.29
    Save 37%
  • 22105 Hydrologic SmallBoy Sediment Filter

    22105 Hydrologic SmallBoy Sediment Filter

    $8.99
    MSRP: $12.06
    Save 25%
  • 22110 Hydrologic SmallBoy Replacement Carbon Filter - Green
  • 22140 Hydrologic TallBoy Sediment Filter

    22140 Hydrologic TallBoy Sediment Filter

    $9.99
    MSRP: $13.79
    Save 28%
  • 36005 Hydrologic SmallBoy De-Chlorinator and Sediment Filter System With Upgraded KDF
  • HBSF-Grn Hydros Side-Fill Water Purifier Bottle - Green Lid
  • HBSF-Orng Hydros Side-Fill Water Purifier Bottle - Orange Lid

    Orange Lid Hydros Side-Fill Water Purifier Bottle

    $27.99
    MSRP: $34.49
    Save 19%
  • WS-21 Water Sentinel Misting System Replacement Filter

    WS-21 Water Sentinel Misting System Filter

    $12.05
    MSRP: $20.69
    Save 42%
  • HBSF-Pnk Hydros Side-Fill Water Purifier Bottle - Pink Lid

    Pink Lid Hydros Side-Fill Water Purifier Bottle (#HBSF-Pnk)

    $27.99
    MSRP: $34.49
    Save 19%
  • F-201R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
  • F-601R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
  • F2-WHITE Instapure Essentials Faucet Filter System - White

    F2-WHITE Instapure Essentials Faucet Filter System - White

    $12.99
    MSRP: $17.24
    Save 25%
  • F8-WHITE Instapure Ultra Faucet Filter System - White

    F8 Instapure Ultra Faucet Filter System - White

    $28.99
    MSRP: $31.04
    Save 7%
  • 8017757 Katadyn MyBottle Ultralight Series 24-Ounce Personal Water Purifier Bottle - Green Deer
  • 8014931 Katadyn Vario Backcountry Series Microfilter Water Filter
  • K5520SS Omnipure Inline GAC Filter Cartridge

    K5520SS Omnipure Inline GAC Water Filter Cartridge

    $19.05
    MSRP: $27.59
    Save 31%
  • Everpure H-54 Water Filter Replacement Cartridge (EV9730-06)

    Everpure H-54 Water Filter Replacement Cartridge (EV9730-06)

    $71.24
    MSRP: $128.79
    Save 45%
  • SB-3 Squeezable Filtered Sport Bottle (27 oz.)

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

    $9.05
    MSRP: $14.94
    Save 39%
  • SB-2R Water Bottle Replacement Filters (2-Pack)

    SB-2R Water Bottle Replacement Filters (2-Pack)

    $7.05
    MSRP: $11.49
    Save 39%
  • 31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    $153.99
    MSRP: $183.95
    Save 16%
  • CL6ROT33-A Omnipure GAC Inline Water Filter
  • PS1-20C Pentek Sediment Water Filter

    PS1-20C Pentek Sediment Water Filter

    $7.99
    MSRP: $13.55
    Save 41%
  • TIER1-IN-WF0150

    TIER1-IN-WF0150

    $8.99
    MSRP: $14.99
    Save 40%
  • TIER1-KDF55-20BB

    TIER1-KDF55-20BB

  • TIER1-KDF85-10

    TIER1-KDF85-10

    $36.99
  • TIER1-P10-10

    TIER1-P10-10

    $3.99
  • P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  • TIER1-P1-20BB

    TIER1-P1-20BB

    $21.99
  • TIER1-P50-20BB

    TIER1-P50-20BB

  • 5-Stage Reverse Osmosis System by Tier1

    5-Stage Reverse Osmosis System by Tier1

    $159.99
    MSRP: $249.99
    Save 36%
  • AXEON-200378

    AXEON-200378

    $162.05
    MSRP: $204.69
    Save 21%
  • ARIES-AF-20-3690-BB

    ARIES-AF-20-3690-BB

    $126.05
    MSRP: $159.84
    Save 21%
  • DUPONT-WFFM350XBN

    DUPONT-WFFM350XBN

  • DUPONT-WFFMC100X

    DUPONT-WFFMC100X

  • DUPONT-WFFMC103X-3PK

    DUPONT-WFFMC103X-3PK

    $22.99
  • DUPONT-WFFMC300X

    DUPONT-WFFMC300X

  • DUPONT-WFFMC303X-3PK
  • TIER1-SDC5-934

    TIER1-SDC5-934

    $3.99
  • AP110 Aquapure Comparable Whole House Sediment Water Filter by Tier1
  • TIER1-FX30-934

    TIER1-FX30-934

    $8.99
  • WHKF-DWHB Whirlpool Comparable Whole House Sediment Water Filter by Tier1

Items 1 to 48 of 2182 total

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