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 2472 total

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

    67401 Aquamira Water Purification Tablets (24-Pack)

    $13.09
    MSRP: $20.99
    Save 38%
  • W9125010 Doulton Specialty Replacement Filter Cartridge
  • W9222900 Doulton Ceramic Water Filter
  • W9222909 Doulton Imperial SuperCarb OBE Replacement Element
  • 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

    $91.69
    MSRP: $160.99
    Save 43%
  • 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
  • SDC-25-3005 Hydronix Whole House Replacement Sediment Filter Cartridge
  • 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%
  • TFM-18-A Tier1 Reverse Osmosis Membrane

    TFM-18-A Tier1 Reverse Osmosis Membrane

    $35.99
    MSRP: $45.99
    Save 22%
  • TFM-36-A Tier1 Reverse Osmosis Membrane

    TFM-36-A Tier1 Reverse Osmosis Membrane

    $36.99
    MSRP: $49.99
    Save 26%
  • TFM-50-A Tier1 Reverse Osmosis Membrane

    TFM-50-A Tier1 Reverse Osmosis Membrane

    $45.99
    MSRP: $55.19
    Save 17%
  • WS-21 Water Sentinel Misting System Replacement Filter

    WS-21 Water Sentinel Misting System Filter

    $12.99
    MSRP: $20.69
    Save 37%
  • 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

    $13.89
    MSRP: $21.99
    Save 37%
  • 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

    $21.09
    MSRP: $33.99
    Save 38%
  • Everpure H-54 Water Filter Replacement Cartridge (EV9730-06)
  • SPC-25-1030 Hydronix Pleated Sediment Water Filter

    SPC-25-1030 Hydronix Pleated Sediment Water Filter

    $7.99
    MSRP: $13.21
    Save 40%
  • SB-3 Squeezable Filtered Sport Bottle (27 oz.)

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

    $11.39
    MSRP: $28.99
    Save 61%
  • SB-2R Water Bottle Replacement Filters (2-Pack)

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

    $7.99
    MSRP: $11.49
    Save 30%
  • 31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    $153.99
    MSRP: $183.95
    Save 16%
  • Crystal Quest 2-7/8 in x 9-3/4 in Nitrate Filter Cartridge
  • Harmsco BC4-1-T-EP Electropolish Band Clamp Filter Housing
  • 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%
  • IC10-14C Coconut GAC Inline Water Filter (1/4-inch FPT)
  • AF-20-2015-BB Tier1 Aries Comparable KDF and Carbon Water Filter
  • AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    $36.99
    MSRP: $56.39
    Save 34%
  • PS5-10C Pentek Comparable Sediment Water Filter by Tier1

    PS5-10C Pentek Comparable Sediment Water Filter by Tier1

    $3.99
    MSRP: $6.99
    Save 43%
  • P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  • P1-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • SDC-45-2050 Hydronix Comparable Sediment Water Filter by Tier1
  • Culligan Compatible RS-23-SED5 Reverse Osmosis Pre-Filter by Tier1
  • Tier1 TROM-100 RO Membrane
  • Tier1 TROM-24 RO Membrane
  • Tier1 TROM-75 RO Membrane
  • AF-20-3690-BB Aries Replacement Whole House Fluoride Removal Filter

    AF-20-3690-BB Aries Whole House Fluoride Removal Filter

    $126.05
    MSRP: $171.99
    Save 27%
  • Hydronix SDC-25-3025 Polypropylene Sediment Filter

    Hydronix SDC-25-3025 Polypropylene Sediment Filter

    $8.99
    MSRP: $10.91
    Save 18%

Items 1 to 48 of 2472 total

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