Discount Water Filters and Air Filters at Discount Filter Store.com

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  • Our products are price match guaranteed!
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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 385 total

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  • 55897C Halsey-Taylor Water Sentry VII Drinking Fountain Filter
  • 55898C Halsey-Taylor Drinking Fountain Filter Replacement Cartridge

    55898C Halsey-Taylor Water Filter Cartridge Replacement

    $91.69
    MSRP: $160.99
    Save 43%
  • 22110 Hydrologic SmallBoy Replacement Carbon Filter - Green
  • OMNIPURE-K5520SS

    OMNIPURE-K5520SS

    $21.09
    MSRP: $27.59
    Save 24%
  • PENTEK-CBC-10

    PENTEK-CBC-10

    $16.92
  • P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  • PENTEK-CFBC-10

    PENTEK-CFBC-10

    $13.99
  • Culligan Pre-Reverse Osmosis Carbon Block Comparable Filter by Tier1
  • TIER1-EPM10-20

    TIER1-EPM10-20

    $11.99
  • TIER1-EPM4-20BB

    TIER1-EPM4-20BB

    $36.99
    MSRP: $48.99
    Save 24%
  • WFDW120009W DuPont Universal Drinking Water Filter System
  • WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge
  • WFPF13003B DuPont Universal Whole House Filtration System
  • WFHD13001B DuPont Universal Heavy Duty Whole House Filtration System
  • WFDWC20001 DuPont Universal Drinking Water Carbon Block Cartridge
  • WFDWC40001 DuPont Universal Drinking Water Carbon Block Cartridge
  • WFHDC3001 DuPont Universal Heavy Duty Pleated Poly Whole House Cartridge
  • WFHDC8001 DuPont Universal Heavy Duty Carbon Wrap 2-Phase Cartridge
  • PENTEK-255579-43

    PENTEK-255579-43

    $14.29
    MSRP: $18.99
    Save 25%
  • HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    $13.99
    MSRP: $19.99
    Save 30%
  • PENTEK-CB1-10

    PENTEK-CB1-10

    $15.39
  • C2-02 Viqua Carbon Whole House Filter

    C2-02 Viqua Carbon Whole House Filter

    $49.99
    MSRP: $89.00
    Save 44%
  • R200 Samsung Inline Water Filter Replacement by Tier1

    R200 OmniFilter Inline Water Filter Replacement by Tier1

    $8.99 MSRP: $12.99
    Save 31%
  • 22120 Hydrologic Stealth RO 100GPD Membrane

    22120 Hydrologic Stealth RO 100GPD Membrane

    $59.99
    MSRP: $64.99
    Save 8%
  • TIER1_EPM10_934_6_PACK

    TIER1_EPM10_934_6_PACK

    $96.99
  • AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    $11.39
    MSRP: $16.99
    Save 33%
  • WFF-6 Mr. Coffee Brand Comparable Replacement Water Filter by Tier1 (6-Pack) (replacement filter discs)
  • KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter
  • Pentek EP-10 Replacement Water Filter Cartridge
  • Pentek EP-20 Replacement Water Filter Cartridge

    Pentek EP-20 Water Filter Cartridge Replacements

    $19.59 MSRP: $20.00
    Save 2%
  • EP-20BB Pentek Replacement Water Filter
  • EP-BB Pentek Replacement Filter Cartridge
  • EPM-20 Pentek Whole House Water Filter

    Pentek EPM-20 Whole House Water Filter Replacement Cartridge

    $12.39 MSRP: $16.55
    Save 25%
  • EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    $48.99 MSRP: $59.99
    Save 18%
  • Pentek EPM-BB Replacement Water Filter Cartridge
  • GAC20-BB Pentek Whole House Water Filter

    GAC20-BB Pentek Whole House Filter Replacement Cartridge

    $47.39 MSRP: $56.80
    Save 17%
  • EPM-10 Pentek Comparable Undersink Filter Replacement Cartridge by Tier1
  • EP-10 Pentek Comparable Carbon Block Water Filter by Tier1

    EP-10 Pentek Comparable Carbon Block Water Filter by Tier1

    $7.99 MSRP: $11.49
    Save 30%
  • EPM-BB Pentek Comparable Carbon Whole House Water Filter
  • EP5-10BB Tier1 Carbon Block Water Filter

    EP5-10BB Tier1 Carbon Block Water Filter

    $17.99 MSRP: $22.99
    Save 22%
  • EP-20 Pentek Comparable Replacement Filter Cartridge by Tier1
  • TIER1_EPM10_934_12_PACK

    TIER1_EPM10_934_12_PACK

    $181.99

Items 1 to 48 of 385 total

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