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
  • AQUAMIRA-67401

    AQUAMIRA-67401

    $12.95
    MSRP: $17.19
    Save 25%
  • W9125010 Doulton Specialty Replacement Filter Cartridge
  • W9222900 Doulton Ceramic Water Filter
  • W9222909 Doulton Imperial SuperCarb OBE Replacement Element
  • FILTRETE-WS01-WH

    FILTRETE-WS01-WH

    $37.05
    MSRP: $52.89
    Save 30%
  • HALSEY-TAYLOR-55898C

    HALSEY-TAYLOR-55898C

    $88.99
    MSRP: $96.24
    Save 8%
  • HYDROLOGIC-22105

    HYDROLOGIC-22105

    $8.99
    MSRP: $12.06
    Save 25%
  • HYDROLOGIC-22110

    HYDROLOGIC-22110

    $18.99
  • HYDROLOGIC-22140

    HYDROLOGIC-22140

    $9.99
    MSRP: $13.79
    Save 28%
  • HYDROLOGIC-36005

    HYDROLOGIC-36005

    $101.99
    MSRP: $119.59
    Save 15%
  • HYDROS-HBSF-GRN

    HYDROS-HBSF-GRN

    $27.99
    MSRP: $34.49
    Save 19%
  • HYDROS-HBSF-ORNG

    HYDROS-HBSF-ORNG

    $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%
  • HYDROS-HBSF-PNK

    HYDROS-HBSF-PNK

    $27.99
    MSRP: $34.49
    Save 19%
  • INSINKERATOR-F-201R

    INSINKERATOR-F-201R

    $67.99
    MSRP: $70.00
    Save 3%
  • INSINKERATOR-F-601R

    INSINKERATOR-F-601R

    $130.99
    MSRP: $134.42
    Save 3%
  • 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%
  • HYDROLOGIC-31050

    HYDROLOGIC-31050

    $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%
  • IC10-14C Coconut GAC Inline Water Filter (1/4-inch FPT)
  • AF-20-2015 Aries Comparable Sediment Water Filter by Tier1
  • 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
  • RO5 Tier1 5-Stage Reverse Osmosis System

    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%
  • AP110 Aquapure Comparable Whole House Sediment Water Filter by Tier1
  • FXUSC GE Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • WHKF-DWHB Whirlpool Comparable Whole House Sediment Water Filter by Tier1

Items 1 to 48 of 2182 total

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