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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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 189 total

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  • 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%
  • TIER1-GAC-20BB Replacement Granular Activated Carbon Filter by Tier1
  • WFFM350XBN DuPont Deluxe Faucet Mount Drinking Water Filter - Brushed Nickel
  • WFFMC303X DuPont Faucet Mount Replacement Cartridges - Ultra Protection Filter (3-pack)
  • EPM-20BB Pentek Comparable Whole House Water Filter by Tier1
  • WFDW120009W DuPont Universal Drinking Water Filter System
  • WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge
  • WFPF13003B DuPont Universal Whole House Filtration System
  • WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System
  • Triton Water Filters Replacement Color Changing Di Cartridge Hydrologic 22016
  • OB1-S-S06 OmniFilter Undersink Water Filter System
  • AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC
  • K5666-KK Omnipure Inline Fluoride Filter

    K5666-KK Omnipure Inline Fluoride Filter

    $39.59
    MSRP: $53.99
    Save 27%
  • Garnet-812 Watts Water Treatment Media #8-12

    Garnet-812 Watts Water Treatment Media #8-12

    $31.99
    MSRP: $40.99
    Save 22%
  • Aries AF-10-2115 KDF/Granular Activated Carbon

    Aries AF-10-2115 KDF/Granular Activated Carbon

    $39.99
    MSRP: $49.00
    Save 18%
  • NCP-20BB Pentek Whole House Filter Replacement

    NCP-20BB Pentek Whole House Filter Replacement Cartridge

    $34.99 MSRP: $48.81
    Save 28%
  • NCP-BB Pentek Whole House Water Filter

    NCP-BB Pentek Whole House Filter Replacement Cartridge

    $32.99 MSRP: $36.34
    Save 9%
  • FQSVF / FQSLF GE SmartWater Undersink Water Filter Replacement Cartridge Set By Tier1
  • FQK2J GE SmartWater Undersink Water Filter Replacement Cartridge Set by Tier1
  • Hydrotech 92192 Chrome Long Reach Faucet

    Hydrotech 92192 Chrome Air-Gap Long Reach Faucet

    $33.39
    MSRP: $43.99
    Save 24%
  • 265062 American Hydro Systems Inline Filter for Siphoning Feeder Systems

    265062 American Hydro Systems Siphoning Feeder Filter

    $34.21
    MSRP: $41.64
    Save 18%
  • 600R American Plumber Undersink Filter Replacement Cartridge

    600R American Plumber Undersink Water Filter Cartridge

    $31.99
    MSRP: $35.06
    Save 9%
  • WGCHD American Plumber Undersink Water Filter Replacement Cartridge
  • WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge
  • 3M Aqua-Pure AP431 Inline Filter Replacement Cartridge

    AP431 3M Aqua-Pure Inline Filter Replacement Cartridge

    $30.99
    MSRP: $49.56
    Save 37%
  • 3M Aqua-Pure AP810 Whole House Water Filter Cartridge

    3M Aqua-Pure AP810 Whole House Filter Replacement Cartridge

    $33.99
    MSRP: $46.64
    Save 27%
  • 3M Aqua-Pure AP811 Whole House Water Filter Cartridge

    AP811 3M Aqua-Pure Whole House Filter Replacement Cartridge

    $36.99
    MSRP: $43.69
    Save 15%
  • 3M Aqua-Pure AP814 Whole House Water Filter
  • 3M Aqua-Pure APS117 Whole House Water Filter Replacement Cartridge
  • A101 Aries Undersink Filter Replacement Cartridge

    A101 Aries Undersink Filter Replacement Cartridge

    $33.99
    MSRP: $49.21
    Save 31%
  • 35618 Brita Faucet Filter System - Chrome - 1

    Brita Chrome Faucet Filter System (#35618)

    $36.99
    MSRP: $59.79
    Save 38%
  • 42412 Brita Atlantis OB32 48-Ounce Water Pitcher

    42412 Brita Atlantis OB32 48-Ounce Water Pitcher

    $30.99
    MSRP: $44.84
    Save 31%
  • 42622 Brita On-Tap FF-100 Faucet Filter System - Chrome
  • 42618 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - Chrome (2-Pack)
  • EVERYDAY-PITCHER Brita 80-Ounce Water Pitcher

    EVERYDAY-PITCHER Brita 80-Ounce Water Pitcher

    $35.19
    MSRP: $52.99
    Save 34%
  • 35516 Brita OB03 Pitcher Replacement Cartridge (5-Pack)

    35516 Brita OB03 Pitcher Replacement Cartridge (5-Pack)

    $36.99
    MSRP: $44.84
    Save 18%
  • 42557 Brita Riviera SMART OB35 64-Ounce Water Pitcher
  • 35250 Brita Space Saver Calendar-Minder OB21 48-Ounce Water Pitcher
  • VINTAGE-PITCHER Brita 80-Ounce Water Pitcher

    Brita Vintage Water Filter Pitcher (80 Ounce)

    $38.99
    MSRP: $52.89
    Save 26%
  • 42201 Brita On-Tap FF-100 Faucet Filter System - White

    42201 Brita On-Tap FF-100 Faucet Filter System - White

    $32.99
    MSRP: $42.54
    Save 22%
  • 42402 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - White (2-Pack)
  • 40045 Camco TastePURE Inline Large Capacity Filter (2-Pack)
  • CB1 OmniFilter Undersink Filter Replacement Cartridge

    CB1-SS6-S06 OmniFilter Undersink Water Filter Cartridge

    $34.99
    MSRP: $47.99
    Save 27%
  • D-250A Culligan Undersink Filter Replacement Cartridge Set

    D-250A Culligan Undersink Filter Replacement Cartridge Set

    $31.99
    MSRP: $46.99
    Save 32%
  • D-40 Culligan Level 4 Undersink Water Filter Replacement Cartridge
  • 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%
  • 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%
  • ISH-200 Culligan Inline Shower Filter - Chrome

    ISH-200 Culligan Inline Shower Filter - Chrome

    $33.19
    MSRP: $44.99
    Save 26%

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