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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39 Item(s)

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  • TFM-18-A Tier1 Reverse Osmosis Membrane

    TFM-18-A Tier1 Reverse Osmosis Membrane

    $35.99
    MSRP: $45.99
    Save 22%
  • TFM-18 Desal Compatible Reverse Osmosis Membrane by Tier1

    TFM-18 Desal Compatible Reverse Osmosis Membrane by Tier1

    $35.99 MSRP: $45.99
    Save 22%
  • ROM-100 Campbell Comparable Reverse Osmosis Membrane by Tier1
  • RF-63 Honeywell Comparable Reverse Osmosis Membrane by Tier1
  • TFM-36-A Tier1 Reverse Osmosis Membrane

    TFM-36-A Tier1 Reverse Osmosis Membrane

    $36.99
    MSRP: $49.99
    Save 26%
  • TFM-36 Desal Comparable Reverse Osmosis Membrane by Tier1

    TFM-36 Desal Comparable Reverse Osmosis Membrane by Tier1

    $36.99 MSRP: $49.99
    Save 26%
  • FX12M GE Comparable Reverse Osmosis Membrane by Tier1

    FX12M GE Comparable Reverse Osmosis Membrane by Tier1

    $36.99 MSRP: $49.99
    Save 26%
  • TFM-36 Axeon Comparable Reverse Osmosis Membrane by Tier1

    TFM-36 Axeon Comparable Reverse Osmosis Membrane by Tier1

    $36.99 MSRP: $49.99
    Save 26%
  • TW30-1812-36 Filmtec Comparable Reverse Osmosis Membrane by Tier1
  • MEM-45 APEC Comparable Reverse Osmosis Membrane by Tier1

    MEM-45 APEC Comparable Reverse Osmosis Membrane by Tier1

    $36.99 MSRP: $49.99
    Save 26%
  • AG1812TAE GE Comparable Reverse Osmosis Membrane by Tier1

    AG1812TAE GE Comparable Reverse Osmosis Membrane by Tier1

    $36.99 MSRP: $49.99
    Save 26%
  • TLC-36 Pentair Comparable Reverse Osmosis Membrane by Tier1
  • W-1812-36 Watts Comparable Reverse Osmosis Membrane by Tier1
  • TS-500 Culligan Large Capacity Inline Filter Replacement Cartridge
  • LF-EC25-CP Tier1 Contemporary Ceramic Faucet - Chrome

    LF-EC25-CP Tier1 Contemporary Ceramic Faucet - Chrome

    $30.99
    MSRP: $51.74
    Save 40%
  • D-250A Culligan Undersink Filter Replacement Cartridge Set

    D-250A Culligan Undersink Filter Replacement Cartridge Set

    $31.99
    MSRP: $46.99
    Save 32%
  • RDA-150 Culligan Shower Exstension Arm

    RDA-150 Culligan Shower Exstension Arm

    $31.99
    MSRP: $38.51
    Save 17%
  • Desal TFM-18-C Reverse Osmosis Membrane
  • FU-WDF-103-B Tier1 Long-Reach Black Faucet FCT-LR-B - Black
  • LF-BLRAG-BN Tier1 Low Lead Air Gap Faucet - Brushed Nickel

    LF-BLRAG-BN Tier1 Low Lead Air Gap Faucet - Brushed Nickel

    $32.99
    MSRP: $42.84
    Save 23%
  • ISH-200 Culligan Inline Shower Filter - Chrome

    ISH-200 Culligan Inline Shower Filter - Chrome

    $33.19
    MSRP: $44.99
    Save 26%
  • PENTEK-P-250

    PENTEK-P-250

    $33.99
    MSRP: $41.99
    Save 19%
  • PENTEK-P-250A

    PENTEK-P-250A

    $33.99
  • D-40 Culligan Level 4 Undersink Water Filter Replacement Cartridge
  • RVF-10 Culligan RV Pre-Tank Exterior Filter

    RVF-10 Culligan RV Pre-Tank Exterior Filter

    $34.99
    MSRP: $38.51
    Save 9%
  • WSH-C125 Culligan Filtered Shower Head with Massage Feature

    WSH-C125 Culligan Filtered Shower Head with Massage Feature

    $34.99
    MSRP: $39.66
    Save 12%
  • IC-EZ-3 Culligan Level 3 Easy-Change Inline Filter System

    IC-EZ-3 Culligan Level 3 Easy-Change Inline Filter System

    $35.29
    MSRP: $53.99
    Save 35%
  • US-600 Culligan Slim Undersink Filter System

    US-600 Culligan Slim Undersink Filter System

    $35.99
    MSRP: $41.39
    Save 13%
  • US-EZ-1 Culligan Level 1 Easy-Change Undersink Filter System
  • TIER1-LF-EC32-CP

    TIER1-LF-EC32-CP

  • PENTEK-EP-30

    PENTEK-EP-30

    $38.49
    MSRP: $46.10
    Save 17%
  • RDSH-C115 Culligan Showerhead

    RDSH-C115 Culligan Showerhead

    $38.99
    MSRP: $55.99
    Save 30%
  • WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge
  • PENTEK-CBC-20

    PENTEK-CBC-20

    $32.77
  • WPX100BB20P Pentek Replacement Filter Cartridge
  • WP5BB20P Pentek Replacement Filter Cartridge

    WP5BB20P Pentek Replacement Filter Cartridge

    $34.99
    MSRP: $42.54
    Save 18%
  • HF-360 Culligan Valve-In-Head Whole House Filter System

    HF-360 Culligan Valve-In-Head Whole House Filter System

    $35.99
    MSRP: $47.14
    Save 24%
  • PENTEK-154166

    PENTEK-154166

    $37.09
    MSRP: $44.95
    Save 17%
  • 154167 Pentek Filter Housing Cap with Pressure Relief Button - Black

39 Item(s)

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