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 499 total

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  • TIER1-XWTC

    TIER1-XWTC

  • CP5-BBS-D Culligan Comparable Whole House Water Filter by Tier1
  • NFS-AMERICAN-PLUMBER-W5CIP

    NFS-AMERICAN-PLUMBER-W5CIP

    $0.00
  • CP5-BBS-D Culligan Comparable Whole House Water Filter by Tier1
  • HB-10-5W Harmsco Comparable Whole House Sediment Water Filter by Tier1
  • SPC-45-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SPC-45-1005 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SPC-45-1010 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • TO6 OmniFilter Comparable Whole House Sediment Water Filter by Tier1
  • FMHC-90-5EZ Watts Comparable Whole House Sediment Water Filter by Tier1
  • NFS-CULLIGAN-D-10-TWIN

    NFS-CULLIGAN-D-10-TWIN

    $0.00
  • NFS-CULLIGAN-D-15

    NFS-CULLIGAN-D-15

    $0.00
  • NFS-FILTRETE-3WH-STDCW-F02

    NFS-FILTRETE-3WH-STDCW-F02

    $0.00
  • NFS-PENTEK-C1

    NFS-PENTEK-C1

    $0.00
  • WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    $10.99
    MSRP: $14.99
    Save 27%
  • DuPont WFPTC100X Water Pitcher Replacement Cartridge High Protection
  • VIQUA-AWP117

    VIQUA-AWP117

    $10.99
    MSRP: $15.99
    Save 31%
  • Hydronix SPC-45-1020 Pleated Sediment Water Filter
  • TIER1-EPM10-20

    TIER1-EPM10-20

    $11.99
  • AQUAPURE-AP-GRMB-05PP-20UB

    AQUAPURE-AP-GRMB-05PP-20UB

    $11.99
  • AQUAPURE-AP-GRMB-10PP-20UB

    AQUAPURE-AP-GRMB-10PP-20UB

    $11.99
  • AQUAPURE-AP-GRMB-20PP-20UB

    AQUAPURE-AP-GRMB-20PP-20UB

    $11.99
  • AQUAPURE-AP-GRMB-50PP-20UB

    AQUAPURE-AP-GRMB-50PP-20UB

    $11.99
  • CULLIGAN-D-25

    CULLIGAN-D-25

    $11.99
  • K2528-KK Omnipure GAC Inline Water Filter

    K2528-KK Omnipure GAC Inline Water Filter

    $11.99
    MSRP: $17.99
    Save 33%
  • Hydronix SPC-45-1030 Sediment Water Filter - Pleated

    SPC-45-1030 Hydronix Pleated Sediment Water Filter

    $11.99 MSRP: $19.54
    Save 39%
  • Pentek EP-10 Replacement Water Filter Cartridge

    Pentek EP-10 Filter Cartridge Replacement

    $11.99 MSRP: $15.34
    Save 22%
  • Pentek P1-20 Whole House Water Filter Replacement Cartridge
  • P5-10BB Tier1 Sediment Water Filter

    P5-10BB Tier1 Sediment Water Filter

    $11.99 MSRP: $16.09
    Save 25%
  • TO1SS OmniFilter Whole House Water Filter
  • W20CLHD American Plumber Whole House Sediment Filter by Tier1
  • ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • WS-21 Water Sentinel Misting System Replacement Filter

    WS-21 Water Sentinel Misting System Filter

    $12.05
    MSRP: $20.69
    Save 42%
  • 67401 Aquamira Water Purifier Tablets (24-Pack)

    67401 Aquamira Water Purification Tablets (24-Pack)

    $12.95
    MSRP: $17.19
    Save 25%
  • F2-WHITE Instapure Essentials Faucet Filter System - White

    F2-WHITE Instapure Essentials Faucet Filter System - White

    $12.99
    MSRP: $17.24
    Save 25%
  • TIER1-RS30-934

    TIER1-RS30-934

    $12.99
  • Pentek 255579-43 Inline Sediment Water Filter Replacement

    Pentek 255579-43 Inline Sediment Water Filter Replacement

    $12.99
    MSRP: $19.99
    Save 35%
  • 22160 Triton Replacement Sediment Filter Cartridge by Hydrologic
  • K2586-KK Omnipure Inline Water Filter

    K2586-KK Omnipure Inline Water Filter

    $12.99
    MSRP: $17.99
    Save 28%
  • 255541-43 Pentek Inline Water Filter Replacement
  • R30BB Pentek Comparable Whole House Water Filter by Tier1
  • ECP5-BB Pentek Comparable Whole House Water Filter by Tier1
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • TIER1-R50-BB

    TIER1-R50-BB

    $13.99
  • DUPONT-WFPFC3002-2PK
  • 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%
  • DuPont WFPTC050X Water Pitcher Replacement Cartridge
  • ECP5-BB Pentek Whole House Water Filter

Items 1 to 48 of 499 total

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