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!
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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.

Items 1 to 48 of 106 total

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  • ECP5-BB Pentek Comparable Whole House Sediment Water Filter by Tier1 (4-Pack)
  • DUPONT-WFQTC90001
  • 602734 Viqua Quartz Sleeve for 602807 UV Lamp

    602734 Viqua Quartz Sleeve for 602807 UV Lamp

    $62.09
    MSRP: $76.99
    Save 19%
  • 602975 Viqua Quartz Sleeve for 602855 UV Lamp

    602975 Viqua Quartz Sleeve for 602855 UV Lamp

    $62.09
    MSRP: $79.99
    Save 22%
  • WFHD13001B DuPont Universal Heavy Duty Whole House Filtration System
  • FRSS-6 Sterilight 6 GPM 1-inch Flow Restrictor
  • FRSS-6-34 Sterilight 6 GPM 3/4-inch Flow Restrictor
  • Sterilight 8 GPM 1-inch Flow Restrictor
  • FRSS-10 Sterilight 10 GPM 3/4-inch Flow Restrictor
  • FRSS-15 Viqua 15 GPM 1-inch Flow Restrictor

    FRSS-15 Viqua 15 GPM 1-inch Flow Restrictor

    $62.99
    MSRP: $110.00
    Save 43%
  • FRSS-20 Viqua 20 GPM 1-inch Flow Restrictor

    FRSS-20 Viqua 20 GPM 1-inch Flow Restrictor

    $62.99
    MSRP: $110.00
    Save 43%
  • FRSS-6 Viqua 6 GPM 1-inch Flow Restrictor

    FRSS-6 Viqua 6 GPM 1-inch Flow Restrictor

    $62.99
    MSRP: $110.00
    Save 43%
  • FRSS-8 Viqua 8 GPM 1-inch Flow Restrictor

    FRSS-8 Viqua 8 GPM 1-inch Flow Restrictor

    $62.99
    MSRP: $110.00
    Save 43%
  • Pentair NEPP2-20DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP2-20DB Pureflex Pleated Polypropylene Cartridge

    $62.99
    MSRP: $77.99
    Save 19%
  • WSQC-2 WaterSentinel Reverse Osmosis Carbon GAC Filter Cartridge
  • 602976 Viqua Quartz Sleeve for 602856 UV Lamp

    602976 Viqua Quartz Sleeve for 602856 UV Lamp

    $63.99
    MSRP: $86.00
    Save 26%
  • QS-012 Viqua Quartz Sleeve for S740RL-4C UV Lamp

    QS-012 Viqua Quartz Sleeve for S740RL-4C UV Lamp

    $64.19
    MSRP: $78.99
    Save 19%
  • FRSS-10 Viqua 10 GPM 3/4-inch Flow Restrictor

    FRSS-10 Viqua 10 GPM 3/4-inch Flow Restrictor

    $64.99
    MSRP: $110.00
    Save 41%
  • FRSS-12 Viqua 12 GPM 1-inch Flow Restrictor

    FRSS-12 Viqua 12 GPM 1-inch Flow Restrictor

    $64.99
    MSRP: $110.00
    Save 41%
  • 22155 Triton Water Replacement Membrane by Hydrologic

    22155 Triton Water Replacement Membrane by Hydrologic

    $65.29
    MSRP: $87.99
    Save 26%
  • Brondell RF-20 H2O+ Circle Replacement Filter Set

    Brondell RF-20 H2O+ Circle Replacement Filter Set

    $66.29
    MSRP: $102.99
    Save 36%
  • FRSS-6-34 Viqua 6 GPM 3/4-inch Flow Restrictor

    FRSS-6-34 Viqua 6 GPM 3/4-inch Flow Restrictor

    $67.39
    MSRP: $96.99
    Save 31%
  • F-201R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
  • EP-20BB Pentek Replacement Water Filter
  • 55897C Halsey-Taylor Water Sentry VII Drinking Fountain Filter
  • FRSS-2.5 Sterilight 2.5 GPM 1/2-inch Flow Restrictor
  • FRSS-3.5 Sterilight 3.5 GPM 1/2-inch Flow Restrictor
  • FRSS-2.5 Viqua 2.5 GPM 1/2-inch Flow Restrictor

    FRSS-2.5 Viqua 2.5 GPM 1/2-inch Flow Restrictor

    $69.99
    MSRP: $90.00
    Save 22%
  • FRSS-3.5 Viqua 3.5 GPM 1/2-inch Flow Restrictor

    FRSS-3.5 Viqua 3.5 GPM 1/2-inch Flow Restrictor

    $69.99
    MSRP: $90.00
    Save 22%
  • 36002017 PURA UV Lamp

    36002017 PURA UV Lamp

    $62.09
    MSRP: $81.99
    Save 24%
  • 36002018 PURA UV Lamp

    36002018 PURA UV Lamp

    $69.49
    MSRP: $89.99
    Save 23%
  • CBC-BB Pentek Whole House Filter Replacement Cartridge
  • 1-100-F Rusco Spin-Down Water Filter System

    1-100-F Rusco Spin-Down Water Filter System

    $60.69
    MSRP: $74.74
    Save 19%
  • SWC1350-C Cuno Whole House Filter Replacement Cartridge

    SWC1350-C Cuno Whole House Water Filter Cartridge

    $60.99
    MSRP: $81.64
    Save 25%
  • FQSVF GE SmartWater Undersink Filter Set (packaging)
  • CB-45-2001 Hydronix Whole House Carbon Replacement Water Filter Cartridge
  • FLOPLUS-20BB Pentek Replacement Filter Cartridge

    FLOPLUS-20BB Pentek Replacement Filter Cartridge

    $61.99
    MSRP: $80.49
    Save 23%
  • HFPP-34-PR-20 Pentek Big Blue Whole House 20 inch Filter Housing
  • CQE-SP-00809 Crystal Quest Bath Ball Filter

    CQE-SP-00809 Crystal Quest Bath Ball Filter

    $61.99
    MSRP: $73.59
    Save 16%
  • CFS517 Cuno Whole House Filter Replacement Cartridge

    CFS517 Cuno Whole House Filter Replacement Cartridge

    $62.05
    MSRP: $87.39
    Save 29%
  • CS-11 Cuno Replacement Filter Cartridge

    CS-11 Cuno Replacement Filter Cartridge

    $62.09
    MSRP: $81.99
    Save 24%
  • W9361230 Doulton Gravity Water Filter

    W9361230 Doulton HCA Gravity Water Filter

    $62.09
    MSRP: $145.99
    Save 57%
  • CQE-RC-04005 Crystal Quest Ceramic Water Filter Cartridge

    CQE-RC-04005 Crystal Quest Ceramic Water Filter Cartridge

    $62.09
    MSRP: $77.99
    Save 20%
  • 3/4-500-F Rusco Polyester Screened Spin-Down Water Filtration System
  • SFH5-CM Sprite ShowerFalls Filtered Shower Extension - Chrome - 1
  • WI-BG-COUNTERTOP-FILTER Body Glove Replacement Countertop Water Filter
  • FRSS-12 Sterilight 12 GPM 1-inch Flow Restrictor
  • FRSS-20 Sterilight 20 GPM 1-inch Flow Restrictor

Items 1 to 48 of 106 total

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