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 94 total

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  • F8-WHITE Instapure Ultra Faucet Filter System - White

    F8 Instapure Ultra Faucet Filter System - White

    $28.99
    MSRP: $31.04
    Save 7%
  • WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge
  • 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%
  • CBC-10 Pentek Replacement Water Filter
  • CB6 OmniFilter 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
  • FLOPLUS-20BB Pentek Comparable Whole House Carbon Water Filter by Tier1
  • Pentek CFB-PB10 Lead & Cyst Carbon Filter

    Pentek CFB-PB10 Lead & Cyst Carbon Filter

    $13.99
    MSRP: $17.12
    Save 18%
  • 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
  • WIC-600 American Plumber Undersink Filter System

    WIC-600 American Plumber Undersink Filter System

    $55.99
    MSRP: $58.34
    Save 4%
  • 3M Aqua-Pure AP22 Under Sink Water Filter
  • 3M Aqua-Pure AP-DW85 Water Filter Replacement Cartridge
  • C-COMPLETE 3M Aqua-Pure Undersink Water Filter
  • C-CYST-FF 3M Aqua-Pure Undersink Water Filter
  • 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
  • CFS9812X-S Cuno Whole House Filter Replacement Cartridge
  • HF10-MS Cuno Whole House Filter Replacement Cartridge

    HF10-MS Cuno Whole House Filter Replacement Cartridge

    $50.05
    MSRP: $68.30
    Save 27%
  • HF20 Cuno Whole House Filter Replacement Cartridge

    HF20 Cuno Whole House Filter Replacement Cartridge

    $50.05
    MSRP: $80.49
    Save 38%
  • HF20-MS Cuno Whole House Filter Replacement Cartridge

    HF20-MS Cuno Whole House Filter Replacement Cartridge

    $71.99
    MSRP: $73.36
    Save 2%
  • HF20-S Cuno Whole House Filter Replacement Cartridge

    HF20-S Cuno Whole House Filter Replacement Cartridge

    $68.99
    MSRP: $86.24
    Save 20%
  • 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%
  • EV9634-01 Everpure OW2 Plus Replacement Filter Cartridge
  • 3US-PF01 Filtrete Undersink Filter Replacement 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
  • FXULC GE SmartWater Undersink Filter Replacement Cartridge
  • FXUTC GE SmartWater Undersink Filter Replacement Cartridge

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