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!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

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.

Items 1 to 48 of 143 total

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  • HYDROS-HBSF-GRN

    HYDROS-HBSF-GRN

    $27.99
    MSRP: $34.49
    Save 19%
  • HYDROS-HBSF-ORNG

    HYDROS-HBSF-ORNG

    $27.99
    MSRP: $34.49
    Save 19%
  • HYDROS-HBSF-PNK

    HYDROS-HBSF-PNK

    $27.99
    MSRP: $34.49
    Save 19%
  • 8017757 Katadyn MyBottle Ultralight Series 24-Ounce Personal Water Purifier Bottle - Green Deer
  • 8014931 Katadyn Vario Backcountry Series Microfilter Water Filter
  • AF-20-2015 Aries Comparable Sediment Water Filter by Tier1
  • AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    $36.99
    MSRP: $56.39
    Save 34%
  • WFFM350XBN DuPont Deluxe Faucet Mount Drinking Water Filter - Brushed Nickel
  • WFFMC103X DuPont Faucet Mount Replacement Cartridges - High Protection Filter (3-pack)
  • DuPont WFRO60X Quick Twist Reverse Osmosis System
  • DuPont WFROM1000X Quick Twist Reverse Osmosis Membrane
  • DuPont WFQTR130004 Quick Twist Refrigerator/Icemaker Filter System
  • DuPont WFPT200X Mirage Filtered Water Pitcher
  • DuPont WFPTC053X Water Pitcher Replacement Cartridge 3 Pack
  • DuPont WFFS150XCH Chrome Counter Top Faucet System
  • AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC
  • RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    $23.99
    MSRP: $27.99
    Save 14%
  • Aries AF-10-2054 Coconut Granular Activated Carbon

    Aries AF-10-2054 Coconut Granular Activated Carbon

    $75.99
    MSRP: $91.99
    Save 17%
  • Aries AF-10-2115 KDF/Granular Activated Carbon

    Aries AF-10-2115 KDF/Granular Activated Carbon

    $39.99
    MSRP: $49.00
    Save 18%
  • GAC20-BB Pentek Whole House Water Filter

    GAC20-BB Pentek Whole House Filter Replacement Cartridge

    $44.99 MSRP: $66.31
    Save 32%
  • FXHTC GE Comparable Whole House Radial Flow Carbon Water Filter by Tier1
  • 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
  • AQUAPURE-AP327

    AQUAPURE-AP327

    $37.99
  • RWC-5 American Plumber Undersink Filter Replacement Cartridge
  • AMERICAN-PLUMBER-WGCHD

    AMERICAN-PLUMBER-WGCHD

    $34.99
    MSRP: $35.64
    Save 2%
  • AMERICAN-PLUMBER-WRC25HD

    AMERICAN-PLUMBER-WRC25HD

    $35.99
    MSRP: $39.99
    Save 10%
  • AMERICAN-PLUMBER-WRC25HD20

    AMERICAN-PLUMBER-WRC25HD20

    $69.99
    MSRP: $78.19
    Save 10%
  • AQUAPURE-AP117

    AQUAPURE-AP117

    $28.99
    MSRP: $36.67
    Save 21%
  • AQUAPURE-AP117RO

    AQUAPURE-AP117RO

    $23.99
    MSRP: $30.23
    Save 21%
  • AQUAPURE-AP200

    AQUAPURE-AP200

    $87.05
    MSRP: $135.69
    Save 36%
  • AQUAPURE-AP317

    AQUAPURE-AP317

    $52.99
    MSRP: $66.69
    Save 21%
  • AQUAPURE-AP517

    AQUAPURE-AP517

    $66.99
    MSRP: $70.14
    Save 4%
  • AQUAPURE-AP5527

    AQUAPURE-AP5527

    $78.99
    MSRP: $82.50
    Save 4%
  • AQUAPURE-AP717

    AQUAPURE-AP717

    $25.99
    MSRP: $34.49
    Save 25%
  • AQUAPURE-AP817

    AQUAPURE-AP817

    $48.99
  • AQUAPURE-AP817-2

    AQUAPURE-AP817-2

    $85.99
    MSRP: $112.69
    Save 24%
  • 3M Aqua-Pure AP-C77 Undersink Filter Replacement Cartridge
  • AQUAPURE-AP-DW70

    AQUAPURE-AP-DW70

    $47.99
    MSRP: $56.34
    Save 15%
  • AQUAPURE-APS117

    AQUAPURE-APS117

    $33.99
    MSRP: $40.81
    Save 17%
  • CULLIGAN-D-250A

    CULLIGAN-D-250A

    $30.99
    MSRP: $39.09
    Save 21%

Items 1 to 48 of 143 total

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