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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  • You’re guaranteed to find expert help!

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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 57 total

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  • Pentek WP5BB97P Replacement Water Filter Cartridge
  • Pentek EP-20 Replacement Water Filter Cartridge
  • D-250A Culligan Comparable Under Sink Water Filter Set by Tier1
  • RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  • Pentek ECP20-20BB Replacement Water Filter Cartridge

    Pentek ECP20-20BB Pleated Sediment Water Filter Cartridge

    $24.99 MSRP: $28.39
    Save 12%
  • Pentek ECP50-20BB Replacement Water Filter Cartridge

    ECP50-20BB Pentek Replacement Filter Cartridge

    $24.99 MSRP: $31.99
    Save 22%
  • AP817 3M Aqua-Pure Comparable Whole House Carbon Water Filter by Tier 1
  • RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  • RFC-BB Pentek Comparable Whole House Carbon Water Filter by Tier1
  • DGD-7525-20 Pentek Whole House Water Filter
  • KX-MATRIKX-1-20 Matrikx 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
  • Pentek ECP1-20BB Replacement Water Filter Cartridge

    ECP1-20BB Pentek Replacement Filter Cartridge

    $26.99 MSRP: $33.99
    Save 21%
  • Pentek EPM-BB Replacement Water Filter Cartridge

    Pentek EPM-BB Water Filter Cartridge Replacement

    $26.99 MSRP: $34.49
    Save 22%
  • EP5-10BB Tier1 Carbon Block Water Filter
  • CW-MF Pentek Comparable Whole House Sediment Waters Filter by Tier1 (6-Pack)
  • EP-BB Pentek Comparable Carbon Block Water Filter by Tier1
  • DBC-10EX2 Pentek Comparable Water Filter Cartridge Replacement by Tier1
  • TS-500 Culligan Inline Water Filter Replacement by Tier1

    TS-500 Culligan Inline Water Filter Replacement by Tier1

    $29.99 MSRP: $49.99
    Save 40%
  • IC-EZ-1 Culligan Level 1 Easy-Change Inline Filter System

    IC-EZ-1 Culligan Level 1 Easy-Change Inline Filter System

    $20.99
    MSRP: $27.13
    Save 23%
  • RV-700 Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    RV-700 Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    $20.99
    MSRP: $35.64
    Save 41%
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • HF-150 Culligan Whole House Filter System

    HF-150 Culligan Whole House Filter System

    $21.99
    MSRP: $26.44
    Save 17%
  • FM-5R Culligan Level 3 Faucet Filter Replacement Cartridge
  • RV-600A Culligan Level 1 Inline RV Pre-Tank Exterior 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%
  • IC-1000 Culligan Inline Filter
  • CFBC-20 Pentek Replacement Filter Cartridge

    CFBC-20 Pentek Replacement Water Filter Cartridge

    $23.49
    MSRP: $29.31
    Save 20%
  • PR-3 Culligan Water Pitcher Replacement Cartridge (3-Pack)

    PR-3 Culligan Water Pitcher Replacement Cartridge (3-Pack)

    $23.79
    MSRP: $33.99
    Save 30%
  • PR-3U Culligan Universal Water Pitcher Replacement Cartridge (3-Pack)
  • W30PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • W50PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • PCC218 Pentek Replacement Filter Cartridge

    PCC218 Pentek Replacement Filter Cartridge

    $23.99
    MSRP: $26.44
    Save 9%
  • P1020266 Culligan Carbon Block Water Filter
  • RC-EZ-3 Culligan Level 3 Easy-Change Inline Filter Replacement Cartridge
  • TFM-24 Desal Reverse Osmosis Membrane

    TFM-24 Desal Reverse Osmosis Membrane

    $24.99
    MSRP: $47.14
    Save 47%
  • FXPL3D GE Pitcher Replacement Cartridge (3-Pack)
  • D-30 Culligan Level 2 Undersink Filter Replacement Cartridge
  • FCT-1 Culligan Drinking Water Faucet - Chrome

    FCT-1 Culligan Drinking Water Faucet - Chrome

    $25.79
    MSRP: $35.99
    Save 28%
  • CBC-20 Tier1 Water Filter Cartridge

    CBC-20 Tier1 Water Filter Cartridge

    $25.99
    MSRP: $32.77
    Save 21%
  • WDF-103SS Tier1 Long-Reach Stainless Steel Faucet
  • ISH-100 Culligan Level 2 Inline Shower Filter for 1/2 inch thread Shower Heads
  • P1012581 Culligan Undersink Replacement Filter Cartridge

Items 1 to 48 of 57 total

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