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

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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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40 Item(s)

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  • HYDROLOGIC-22110

    HYDROLOGIC-22110

    $18.99
  • 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%
  • WFPF13003B DuPont Universal Whole House Filtration System
  • C2-02 Viqua Carbon Whole House Filter

    C2-02 Viqua Carbon Whole House Filter

    $49.99
    MSRP: $89.00
    Save 44%
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (6-Pack)
  • 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

    $47.99 MSRP: $59.99
    Save 20%
  • Pentek EPM-BB Replacement Water Filter Cartridge
  • EPM-10 Pentek Comparable Undersink Filter Replacement Cartridge by Tier1
  • EPM-BB Pentek Comparable Carbon Whole House Water Filter
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (12-Pack)
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (25-Pack)
  • 22070 Hydrologic Comparable Whole House Carbon Filter by Tier1
  • EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    $39.99 MSRP: $48.99
    Save 18%
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1
  • HDG-CB-AC10 Hydronix Comparable PRE-RO Carbon Block Reverse Osmosis Filter by Tier1
  • RFC-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1
  • CB-25-2010 Hydronix Comparable Replacement Filter Cartridge by Tier1
  • PENTEK-EPM-10

    PENTEK-EPM-10

    $9.99
    MSRP: $13.99
    Save 29%
  • HYDROTECH-41400009

    HYDROTECH-41400009

    $15.69
    MSRP: $18.39
    Save 15%
  • Q5621 Omnipure Replacement Filter Cartridge

    Q5621 Omnipure Replacement Filter Cartridge

    $21.09
    MSRP: $27.99
    Save 25%
  • Q5621-P Omnipure Replacement Filter Cartridge

    Q5621-P Omnipure Replacement Filter Cartridge

    $23.19
    MSRP: $35.99
    Save 36%
  • OMNIPURE-SCL10-B

    OMNIPURE-SCL10-B

    $12.99
    MSRP: $17.24
    Save 25%
  • CB-25-1010 Hydronix Carbon Water Filter Replacement

    CB-25-1010 Hydronix Carbon Water Filter Replacement

    $8.99
    MSRP: $12.99
    Save 31%
  • OMNIPURE-ELF-XL-10M-P

    OMNIPURE-ELF-XL-10M-P

    $35.89
    MSRP: $43.50
    Save 17%
  • Omnipure ELF-10M-P Carbon Block with Polyphosphate

    Omnipure ELF-10M-P Carbon Block with Polyphosphate

    $47.99
    MSRP: $50.34
    Save 5%
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (50-Pack)
  • 22006 Hydrologic BigBoy Replacement Carbon Filter - Green
  • HYDRONIX-CB-25-2010

    HYDRONIX-CB-25-2010

    $15.69
  • CB-45-2010 Hydronix Replacement Filter Cartridge

    CB-45-2010 Hydronix Replacement Filter Cartridge

    $48.99
    MSRP: $58.99
    Save 17%
  • TIER1-KDF55-20

    TIER1-KDF55-20

  • CB-45-1010 Hydronix Replacement Whole House Carbon Water Filter
  • TIER1-KDF85-10BB

    TIER1-KDF85-10BB

    $81.99
  • TIER1-KDF85-20

    TIER1-KDF85-20

  • PENTEK-655130-43

    PENTEK-655130-43

    $13.99
    MSRP: $18.99
    Save 26%
  • PENTEK-655148-43

    PENTEK-655148-43

    $23.99
    MSRP: $30.99
    Save 23%
  • 22006 Hydrologic Comparable Whole House Water Filter by Tier1

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