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 189 total

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  • W9125010 Doulton Specialty Replacement Filter Cartridge
  • W9222909 Doulton Imperial SuperCarb OBE Replacement Element
  • 55898C Halsey-Taylor Drinking Fountain Filter Replacement Cartridge

    55898C Halsey-Taylor Water Filter Cartridge Replacement

    $91.69
    MSRP: $160.99
    Save 43%
  • F-201R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
  • F8-WHITE Instapure Ultra Faucet Filter System - White

    F8 Instapure Ultra Faucet Filter System - White

    $28.99
    MSRP: $31.04
    Save 7%
  • Everpure H-54 Water Filter Replacement Cartridge (EV9730-06)
  • WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge
  • EV977100 Everpure Chloramine Reduction Water Filter Replacement
  • ROR2000-S-05 OmniFilter Reverse Osmosis Pre Filter Replacement
  • 22120 Hydrologic Stealth RO 100GPD Membrane

    22120 Hydrologic Stealth RO 100GPD Membrane

    $59.99
    MSRP: $64.99
    Save 8%
  • CBC-10 Pentek Replacement Water Filter
  • CB6 OmniFilter Comparable Whole House Carbon Water Filter by Tier1
  • KX-MATRIKX-1-HD10 KX Matrikx Comparable Whole House Carbon Water Filter By Tier1
  • FLOPLUS-10BB Pentek Comparable Whole House Carbon Water Filter by Tier1
  • KX-MATRIKX-1-20 Matrikx Comparable Whole House Carbon Water Filter by Tier1
  • CR1-20 KX MatrikX Comparable Whole House Carbon Water Filter by Tier1
  • CHLORPLUS-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • FLOPLUS-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • KX-MATRIKX-1-HD20 Technologies MatrikX Whole House Carbon Filter By Tier1
  • MATRIKX-5-HD20 KX Technologies MatrikX Comparable Whole House Carbon Filter by Tier1
  • FLOPLUS-20BB Pentek Comparable Whole House Carbon Water Filter by Tier1
  • P-250 Pentek Comparable Under Sink Water Filter Set Tier1
  • D-250A Culligan Comparable Under Sink Water Filter Set by Tier1
  • P-250 Pentek Comparable Under Sink Water Filter Set by Tier1
  • P-250A Pentek Comparable Under Sink Filter Set by Tier1

    P-250A Pentek Comparable Under Sink Filter Set by Tier1

    $21.99 MSRP: $41.99
    Save 48%
  • WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1
  • WHKF-DB2 Whirlpool Comparable Under Sink Water Filter by Tier1
  • FQSVF / FQSLF GE SmartWater Undersink Water Filter Replacement Cartridge Set By Tier1
  • FQK2J GE SmartWater Undersink Water Filter Replacement Cartridge Set by Tier1
  • FQK2J GE Undersink Water Filter Set
  • Culligan D30 Comparable Carbon Block Whole House Water Filter by Tier1
  • CBC-10 Pentek Comparable Replacement Filter Cartridge by Tier1
  • CBR2-10 Pentek Comparable Carbon Block Whole House Water Filter by Tier1
  • Floplus 10 Pentek Comparable Carbon Block Whole House Water Filter by Tier1
  • D-30 Culligan Comparable Carbon Block Whole House Water Filter by Tier1
  • CBR2-10R Pentek Comparable Carbon Block Whole House Water Filter by Tier1
  • FXULC GE SmartWater Comparable Undersink Filter Replacement Cartridge by Tier1
  • CHLORPLUS-10 Pentek Comparable Whole House Water Filter by Tier1
  • D-40 Culligan Comparable Undersink Water Filter Replacement Cartridge by Tier1
  • FXSVC GE SmartWater Comparable Undersink Filter Set by Tier1

    FXSVC GE SmartWater Comparable Undersink Filter Set by Tier1

    $21.99 MSRP: $41.99
    Save 48%
  • CB1-SS6-S06 OmniFilter Comparable Undersink Water Filter Cartridge by Tier1
  • CB3-SS6-06 OmniFilter Comparable Undersink Filter Replacement Cartridge by Tier1
  • FXUTC GE SmartWater Comparable Undersink Filter Replacement Cartridge by Tier1
  • FX12P GE SmartWater Comparable Reverse Osmosis Filter Set by Tier1
  • W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge
  • Pentek SCBC-10 Silvered Carbon Block

    Pentek SCBC-10 Silvered Carbon Block

    $22.99
    MSRP: $24.71
    Save 7%
  • Pentek QC10-CB1R Carbon Block Quick Change Filter
  • 600R American Plumber Undersink Filter Replacement Cartridge

    600R American Plumber Undersink Water Filter Cartridge

    $31.99
    MSRP: $35.06
    Save 9%

Items 1 to 48 of 189 total

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