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

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Water Filtration Systems, Filters, & Parts

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 592 total

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  • PX20-20 Purtrex Replacement Filter Cartridge

    PX20-20 Purtrex Replacement Water Filter

    $10.99
    MSRP: $14.99
    Save 27%
  • PX75-20 Purtrex Replacement Filter Cartridge

    PX75-20 Purtrex Replacement Water Filter Cartridge

    $10.99
    MSRP: $14.99
    Save 27%
  • SPC-25-2010 Hydronix Pleated Sediment Water Filter

    SPC-25-2010 Hydronix Pleated Sediment Water Filter

    $10.99
    MSRP: $12.64
    Save 13%
  • SWC-25-2001 Hydronix String Wound Sediment Water Filter (1 micron)
  • AP-GRMB-01PP-20UB Whole House Replacement Water Filter by 3M Aqua-Pure
  • 153017 Pentek Slim Line Filter Housing Sump - Blue

    153017 Pentek Slim Line Filter Housing Sump - Blue

    $11.29
    MSRP: $15.28
    Save 26%

    Out of stock

  • Pentek PD-10-20 Whole House Replacement Sediment Water Filter
  • Pentek R30 Replacement Water Filter Cartridge
  • SDC-45-1005 Hydronix Whole House Filter Replacement by Tier1

    SDC-45-1005 Hydronix Whole House Filter Replacement by Tier1

    $11.99 MSRP: $24.64
    Save 51%
  • 4WH-HDGR-F01 Filtrete Comparable Whole House Sediment Water Filter by Tier1
  • SDC-45-1005 Hydronix Whole House Replacement Sediment Filter Cartridge Comparable by Tier1
  • SLIM-38-PR5 Pentek Whole House Slim 5 inch Filter Housing

    SLIM-38-PR5 Pentek Whole House Slim 5 inch Filter Housing

    $12.39
    MSRP: $16.55
    Save 25%
  • 158008 Pentek Slim Line Filter Housing - Clear

    158008 Pentek Slim Line Water Filter Housing - Clear

    $12.79
    MSRP: $16.55
    Save 23%
  • SLIM-14-WPR5 Pentek Whole House Slim 5 inch Filter Housing

    SLIM-14-WPR5 Pentek Whole House Slim 5 inch Filter Housing

    $12.99
    MSRP: $17.24
    Save 25%
  • Pentek 158114 10-inch Standard Filter Housing

    Pentek 158114 10-inch Standard Filter Housing

    $12.99
    MSRP: $15.34
    Save 15%
  • Pentek PD-25-20 Whole House Replacement Sediment Water Filter
  • S1-20 Pentek Whole House Filter Replacement Cartridge

    S1-20 Pentek Whole House Filter Replacement Cartridge

    $12.99 MSRP: $17.99
    Save 28%
  • WP-5BB97P Pentek Comparable Replacement Filter Cartridge by Tier1
  • 153126 Pentek Filter Housing Sump - White

    153126 Pentek Filter Housing Sump - White

    $13.39
    MSRP: $17.70
    Save 24%

    Out of stock

  • SDC-45-1001 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SDC-45-1005 Hydronix Whole House Replacement Sediment Filter Cartridge
  • P5-30 Pentek Whole House Replacement Sediment Filter Cartridge
  • SWC-25-2030 Hydronix String Wound Sediment Water Filter (30 micron)
  • 655130-43/DFX-CB-10 Pentek Diamond Polyspun Carbon Block Replacement
  • Pentek ECP5-20 Replacement Water Filter Cartridge
  • SPC-45-1050 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SDC-45-1010 Hydronix Whole House Replacement Sediment Comparable Filter Cartridge by Tier1
  • SDC-45-1010 Hydronix Whole House Replacement Sediment Filter Cartridge
  • ECP50-20 Pentek Replacement Filter Cartridge

    ECP50-20 Pentek Replacement Filter Cartridge

    $14.99
    MSRP: $17.70
    Save 15%
  • SPC-25-2020 Hydronix Pleated Sediment Water Filter

    SPC-25-2020 Hydronix Pleated Sediment Water Filter

    $14.99
    MSRP: $20.99
    Save 29%

    Out of stock

  • SPC-25-2005 Hydronix Pleated Sediment Water Filter

    SPC-25-2005 Hydronix Pleated Sediment Water Filter

    $14.99
    MSRP: $20.99
    Save 29%
  • CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    $15.69
    MSRP: $23.99
    Save 35%
  • 4WH-STDGR-F02 Filtrete Replacement Filter Cartridge (2-Pack)
  • FPMB-BB20-10 Watts Flo-Pro Whole House Replacement Filter Cartridge
  • ECP1-20 Pentek Replacement Filter Cartridge

    ECP1-20 Pentek Replacement Filter Cartridge

    $15.99
    MSRP: $17.70
    Save 10%
  • SWC-45-1005 Hydronix String Wound Sediment Water Filter

    SWC-45-1005 Hydronix String Wound Sediment Water Filter

    $15.99
    MSRP: $19.54
    Save 18%
  • GAC-20 Pentek Comparable Granular Activated Carbon Water Filter by Tier1
  • 3WH-HDPL-F01 Filtrete Comparable Whole House Water Filter by Tier1
  • RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    $15.99 MSRP: $17.99
    Save 11%
  • 3WH-HDPL-F01 Filtrete Replacement Filter Cartridge
  • PD-25-30 Pentek Whole House Replacement Sediment Filter Cartridge
  • SPC-45-1010 Hydronix Pleated Sediment Water Filter

    SPC-45-1010 Hydronix Pleated Sediment Water Filter

    $16.99
    MSRP: $21.99
    Save 23%
  • SPC-25-2030 Hydronix Pleated Sediment Water Filter

    SPC-25-2030 Hydronix Pleated Sediment Water Filter

    $16.99
    MSRP: $23.99
    Save 29%
  • Hydronix SDC-25-3010 Polypropylene Sediment Filter
  • CP5-BBS-D Culligan Level 4 Whole House Filter Replacement Cartridge
  • WP1BB97P Pentek Replacement Filter Cartridge
  • RS15 OmniFilter Whole House Replacement Filter Cartridge
  • SWC-45-1001 Hydronix String-Wound Sediment Water Filter

    SWC-45-1001 Hydronix String-Wound Sediment Water Filter

    $17.99
    MSRP: $18.39
    Save 2%

Items 1 to 48 of 592 total

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