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 73 total

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  • WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    $15.69
    MSRP: $23.99
    Save 35%
  • FLOPLUS-20BB Pentek Replacement Filter Cartridge

    FLOPLUS-20BB Pentek Replacement Filter Cartridge

    $78.99
    MSRP: $95.99
    Save 18%
  • 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%
  • 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%
  • SLIM-CLEAR-14-WPR5 Pentek Whole House Slim 5 inch Filter Housing
  • 158110 Pentek Filter Housing - Clear

    158110 Pentek Filter Housing - Clear

    $18.99
    MSRP: $22.41
    Save 15%
  • CBC20-BB Pentek Replacement Filter Cartridge
  • P5 Pentek Whole House Replacement Sediment Filter Cartridge

    P5 Pentek Whole House Replacement Sediment Filter Cartridge

    $6.99 MSRP: $10.34
    Save 32%
  • Pentek PD-10-934 Whole House Water Filter Replacement Cartridge

    PD-10-934 Pentek Whole House Filter Replacement Cartridge

    $6.99 MSRP: $8.15
    Save 14%
  • Pentek RFC-20 Whole House Water Filter Replacement Cartridge

    RFC-20 Pentek Whole House Filter Replacement Cartridge

    $28.99 MSRP: $37.99
    Save 24%
  • RFC20-BB Pentek Carbon Filter Replacement Cartridge

    RFC20-BB Pentek Replacement Filter Cartridge

    $57.99 MSRP: $82.91
    Save 30%
  • AP-GRMB-05PP-10UB Aquapure Whole House Filter Replacement by Tier1
  • SDC-25-1005 Hydronix Whole House Filter Replacement by Tier1
  • AP1001 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • AP-GRMB-01PP-10UB 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • P1-D Culligan Comparable Whole House Sediment Water Filter by Tier1
  • SBC-25-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SDC-25-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • GX01-9-78 Hytrex Comparable Whole House Sediment Water Filter by Tier1
  • GX05-9-78 Hytrex Comparable Whole House Sediment Water Filter by Tier1
  • 22006 Hydrologic Comparable Whole House Water Filter by Tier1
  • WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • 801-20 Harmsco Replacement Filter Cartridge

    801-20 Harmsco Replacement Filter Cartridge

    $7.99
    MSRP: $11.49
    Save 30%
  • NCP-10 Pentek Undersink Filter Replacement Cartridge

    NCP-10 Pentek Undersink Filter Replacement Cartridge

    $10.29
    MSRP: $15.99
    Save 36%
  • PCC218 Pentek Replacement Filter Cartridge

    PCC218 Pentek Replacement Filter Cartridge

    $23.99
    MSRP: $26.44
    Save 9%
  • CFB-PLUS20BB Pentek Replacement Water Filter Cartridge

    CFB-PLUS20BB Pentek Replacement Water Filter Cartridge

    $45.39
    MSRP: $67.99
    Save 33%
  • CRFC-BB Pentek Chloramine Reduction Water Filter

    CRFC-BB Pentek Chloramine Reduction Water Filter

    $65.19
    MSRP: $104.99
    Save 38%
  • HDG-P117 Hydronix Replacement Water Filter
  • KDF55-10 Tier1 Water Filter

    KDF55-10 Tier1 Water Filter

    $23.99
    MSRP: $27.34
    Save 12%
  • Pentek CFB-Plus10BB Fiberdyne Carbon Filter

    Pentek CFB-Plus10BB Fiberdyne Carbon Filter

    $25.39
    MSRP: $32.99
    Save 23%
  • 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • FXUSC GE Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • EPM-20BB Pentek Comparable Whole House Water Filter by Tier1
  • PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  • Pentek 158599 Clear 3G Slim Line Filter Housing

    Pentek 158599 Clear 3G Slim Line Filter Housing

    $22.99
    MSRP: $28.99
    Save 21%
  • Pentek 158637 Clear 3G Slim Line Filter Housing with Pressure Relief
  • Pentek 158214 Clear Traditional Slim Line Filter Housing

    Pentek 158214 Clear Traditional Slim Line Filter Housing

    $27.99
    MSRP: $37.99
    Save 26%
  • C1-20 Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)
  • SPC-25-1001 Hydronix Pleated Sediment Filter

    SPC-25-1001 Hydronix Pleated Sediment Water Filter

    $6.99 MSRP: $8.04
    Save 13%
  • EP-20BB Pentek Replacement Water Filter
  • EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    $47.99 MSRP: $59.99
    Save 20%
  • GAC20-BB Pentek Whole House Water Filter
  • Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    $14.99 MSRP: $20.57
    Save 27%
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • P1 Pentek 10 x 2.5-inch Whole House Sediment Water Filter Replacement
  • P5 Pentek Comparable Whole House Replacement Sediment Filter Cartridge by Tier1

Items 1 to 48 of 73 total

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