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!

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  • Your filters are guaranteed to be the right fit!
  • 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 390 total

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  • W9240002 Doulton Specialty Replacement Filter Cartridge
  • 3M Aqua-Pure AP110-2 Whole House Water Filter Cartridge
  • SDC-45-2050 Hydronix Whole House Replacement Sediment Filter Cartridge
  • P1-30 Pentek Whole House Replacement Sediment Filter Cartridge
  • SPC-45-1001 Hydronix Pleated Sediment Water Filter

    SPC-45-1001 Hydronix Pleated Sediment Water Filter

    $20.99
    MSRP: $27.99
    Save 25%
  • WPX10BB97P Pentek Fibrillated Polypropylene Water Filter

    WPX10BB97P Pentek Fibrillated Polypropylene Water Filter

    $20.99
    MSRP: $22.99
    Save 9%
  • PCC212 Pentek Replacement Filter Cartridge

    PCC212 Pentek Replacement Filter Cartridge

    $20.99 MSRP: $22.41
    Save 6%
  • SDC-45-2005 Hydronix Whole House Filter Replacement by Tier1

    SDC-45-2005 Hydronix Whole House Filter Replacement by Tier1

    $20.99 MSRP: $25.76
    Save 19%
  • SDC-45-2005 Hydronix Comparable Whole House Replacement Sediment Filter Cartridge by Tier1
  • SDC-45-2010 Hydronix Comparable Sediment Water Filter Cartridge by Tier1
  • HF-150 Culligan Whole House Filter System

    HF-150 Culligan Whole House Filter System

    $21.99
    MSRP: $26.44
    Save 17%
  • SPC-45-2005 Hydronix Whole House Replacement Sediment Filter Cartridge
  • PD-1-40 Pentek Whole House Replacement Sediment Filter Cartridge
  • WPX5BB97P Pentek Whole House Filter Replacement Cartridge
  • 154134 Pentek Water Filtration System Housing Cap – (Black, 0.75 Inch)
  • Pentek PD-1-30 Polypropylene Sediment Filter
  • R30-BB Pentek Whole House Filter Cartridge
  • HB-10-5W Harmsco Calypso Blue Replacement Filter Cartridge
  • 153001 Pentek Filter Housing Sump - Blue

    153001 Pentek Filter Housing Sump - Blue

    $22.99
    MSRP: $28.74
    Save 20%
  • SWC-45-20100 Hydronix String Wound Sediment Water Filter

    SWC-45-20100 Hydronix String-Wound Sediment Water Filter

    $22.99
    MSRP: $32.19
    Save 29%
  • CQE-RC-04033 Crystal Quest Reusable Pleated Water Filter

    CQE-RC-04033 Crystal Quest Reusable Pleated Water Filter

    $23.50
    MSRP: $33.34
    Save 30%
  • W30PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • W50PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • SLIM-CLEAR-14-WPR5 Pentek Whole House Slim 5 inch Filter Housing
  • SPC-45-2010 Hydronix Pleated Sediment Water Filter Cartridge
  • 655148-43/DFX-CB-20 Pentek Diamond Polyspun Carbon Block Replacement
  • 150550 Pentek 3G Whole House Filter System

    150550 Pentek 3G Whole House Filter System

    $24.05
    MSRP: $35.64
    Save 33%
  • CB-45-1010 Hydronix Replacement Whole House Carbon Water Filter
  • STANDARD-34-PR-10 Pentek Whole House Standard 10 inch Filter Housing
  • 158643 Pentek Slim Line Filter Housing with Pressure Relief Valve - Clear
  • SPC-45-2030 Hydronix Pleated Sediment Water Filter

    SPC-45-2030 Hydronix Pleated Sediment Water Filter

    $24.99
    MSRP: $32.99
    Save 24%
  • CB-45-1001 Hydronix Replacement Whole House Filter Cartridge
  • STANDARD-34-WPR-10 Pentek Whole House Standard 10 inch Filter Housing
  • SWC-45-2050 Hydronix String Wound Sediment Water Filter

    SWC-45-2050 Hydronix String-Wound Sediment Water Filter

    $25.99
    MSRP: $30.81
    Save 16%
  • CBC-20 Pentek Comparable Water Filter Cartridge by Tier1

    CBC-20 Pentek Comparable Water Filter Cartridge by Tier1

    $25.99
    MSRP: $32.77
    Save 21%
  • GAC-BB Pentek Replacement Filter Cartridge

    GAC-BB Pentek Replacement Filter Cartridge

    $26.99
    MSRP: $36.99
    Save 27%
  • WS-20 Pentek Water Softening Filter

    WS-20 Pentek Water Softening Filter

    $26.99
    MSRP: $35.64
    Save 24%
  • 47-55702G2 Water Factory Systems Whole House Replacement Sediment Filter Cartridge
  • 47-55706G2 Water Factory Systems Whole House Replacement Filter Cartridge
  • 3M Aqua-Pure AP124-2C Water Filter

    AP124-2C 3M Aqua-Pure Water Filter

    $26.99
    MSRP: $38.99
    Save 31%
  • SWC-45-2001 Hydronix String Wound Sediment Water Filter
  • FH4200CW12 Watts Flowmatic Clear Water Filter Housing

    FH4200CW12 Watts Flowmatic Clear Water Filter Housing

    $28.99
    MSRP: $31.04
    Save 7%
  • CQE-RC-04015 Crystal Quest Reusable Pleated Water Filter

    CQE-RC-04015 Crystal Quest Reusable Pleated Water Filter

    $28.99
    MSRP: $35.99
    Save 19%
  • CB-25-2001 Hydronix Carbon Water Filter Replacement

    CB-25-2001 Hydronix Carbon Water Filter Replacement

    $28.99
    MSRP: $35.99
    Save 19%
  • NCP-BB Pentek Comparable Whole House Carbon Filter by Tier1
  • R30-20BB Pentek Whole House Water Filter

    R30-20BB Pentek Whole House Filter Replacement Cartridge

    $28.99 MSRP: $37.99
    Save 24%
  • Pentek RFC-20 Whole House Water Filter Replacement Cartridge

    RFC-20 Pentek Whole House Filter Replacement Cartridge

    $28.99 MSRP: $37.99
    Save 24%
  • W9121214 Doulton ATC Super Sterasyl Replacement Element

    W9121214 Doulton ATC Super Sterasyl Ceramic Water Filter

    $29.00
    MSRP: $47.91
    Save 39%

Items 1 to 48 of 390 total

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