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 95 total

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  • 55897C Halsey-Taylor Water Sentry VII Drinking Fountain Filter
  • 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%
  • K5520SS Omnipure Inline GAC Filter Cartridge

    K5520SS Omnipure Inline GAC Water Filter Cartridge

    $19.05
    MSRP: $27.59
    Save 31%
  • WFDW120009W DuPont Universal Drinking Water Filter System
  • WFDWC20001 DuPont Universal Drinking Water Carbon Block Cartridge
  • WFDWC40001 DuPont Universal Drinking Water Carbon Block Cartridge
  • Pentek 255579-43 Inline Sediment Water Filter Replacement
  • CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    $14.99
    MSRP: $19.99
    Save 25%
  • 22120 Hydrologic Stealth RO 100GPD Membrane

    22120 Hydrologic Stealth RO 100GPD Membrane

    $59.99
    MSRP: $64.99
    Save 8%
  • CB6 Multipure Aquaversa Comparable Water Filter: HDG-CB6-14 HydroGuard

    CB6 Comparable Water Filter: HDG-CB6-14 HydroGuard

    $29.99
    MSRP: $43.99
    Save 32%
  • KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter
  • Pentek EP-10 Replacement Water Filter Cartridge

    Pentek EP-10 Filter Cartridge Replacement

    $11.99 MSRP: $15.34
    Save 22%
  • EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    $8.49 MSRP: $11.49
    Save 26%
  • CBC-10 Pentek Replacement Water Filter
  • Pentek QC10-CB1R Carbon Block Quick Change Filter
  • 600R American Plumber Undersink Filter Replacement Cartridge
  • DW-2000-RB American Plumber Replacement Filter Cartridge
  • WIC-600 American Plumber Undersink Filter System

    WIC-600 American Plumber Undersink Filter System

    $55.99
    MSRP: $58.34
    Save 4%
  • 3M Aqua-Pure AP-DW85 Water Filter Replacement Cartridge
  • C-COMPLETE 3M Aqua-Pure Undersink Water Filter
  • WI-BG12000C Body Glove Replacement Filter Cartridge

    WI-BG12000C Body Glove Replacement Filter Cartridge

    $290.21
    MSRP: $386.95
    Save 25%
  • WI-BG3000C Body Glove Replacement Filter Cartridge

    WI-BG3000C Body Glove Replacement Filter Cartridge

    $158.99
    MSRP: $192.95
    Save 18%
  • WI-BG3000R Body Glove Replacement Filter Cartridge

    WI-BG3000R Body Glove Replacement Filter Cartridge

    $145.99
    MSRP: $174.95
    Save 17%
  • CB3 OmniFilter Undersink Filter Replacement Cartridge
  • 1000R-D Culligan Level 3 Undersink RV and Marine Icemaker and Drinking Water Filter
  • FM-15A Culligan Level 3 On-Tap Faucet Filter System

    Culligan FM-15A Level 3 Faucet Filter System

    $22.99
    MSRP: $28.51
    Save 19%
  • FM-15RA Culligan Level 3 Faucet Filter Replacement Cartridge
  • HC111-S Cuno Replacement Filter Cartridge

    HC111-S Cuno Replacement Filter Cartridge

    $35.99
    MSRP: $43.69
    Save 18%
  • GS-10RO-H-38 Desal Reverse Osmosis Carbon Post Filter

    GS-10RO-H-38 Desal Reverse Osmosis Carbon Post Filter

    $17.99
    MSRP: $20.69
    Save 13%
  • W9223026 Doulton Replacement Ceramic Filter
  • W9330957 Doulton UltraCarb Undersink Ceramic Candle Filter System
  • EV9612-71 Everpure 4K Plus Replacement Filter Cartridge

    EV9612-71 Everpure 4K Plus Replacement Filter Cartridge

    $52.99
    MSRP: $59.79
    Save 11%
  • EV9618-36 Everpure 2CB-GW Replacement Water Filter Cartridge
  • EV9634-01 Everpure OW2 Plus Replacement Filter Cartridge
  • FQROPF GE Profile SmartWater Ultra Plus Reverse Osmosis Filter Set
  • FQSLF GE SmartWater Undersink Filter Set

    FQSLF GE SmartWater Undersink Filter Set (2 Filters)

    $38.99
    MSRP: $50.00
    Save 22%
  • FQSVF GE SmartWater Undersink Filter Set (packaging)
  • FXMLH GE Faucet Filter Replacement Cartridge
  • FXUVC GE SmartWater Undersink Filter Replacement Cartridge
  • GXFM07HBL GE Faucet Filter System
  • HDG-CB-AC10 Hydronix Reverse Osmosis Filter

    HDG-CB-AC10 Hydronix Reverse Osmosis Filter

    $7.99
    MSRP: $9.19
    Save 13%
  • 1100R OmniFilter Quick Change Replacement Filter Cartridge
  • CBF3-S-05 OmniFilter Undersink Filter System

    CBF3-S-05 OmniFilter Undersink Water Filtration System

    $105.99
    MSRP: $108.34
    Save 2%
  • P-250 Pentek Undersink Filter Set

    P-250 Pentek Undersink Filter Set

    $32.99
    MSRP: $41.99
    Save 21%
  • P-250A Pentek Undersink Filter Set

    P-250A Pentek Undersink Filter Set

    $23.99
    MSRP: $29.13
    Save 18%
  • QC10-CB1 Pentek Undersink Quick-Change Filter System

    QC10-CB1 Pentek Quick-Change Water Filtration System

    $32.95
    MSRP: $40.99
    Save 20%
  • QC10-CBR-JG14 Pentek Undersink Quick-Change Filter System

    QC10-CBR-JG14 Pentek Quick-Change Water Filter System

    $33.99
    MSRP: $35.41
    Save 4%

Items 1 to 48 of 95 total

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