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 59 total

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  • LSB6 Lifesaver 6000UF Water Bottle
  • 3M AquaPure 3MFF101 Whole House Water Filter Cartridge

    3MFF101 3M Aqua-Pure Replacement Water Filter Cartridge

    $200.99
    MSRP: $209.29
    Save 4%
  • SST1HA 3M Aqua-Pure Water Filter System Housing
  • XLE-2540 Filmtec Extra Low Energy Commercial Reverse Osmosis Membrane
  • 3M Aqua-Pure AP902 Whole House Water Filter

    AP902 3M Aqua-Pure Whole House Water Filtration System

    $204.99
    MSRP: $238.04
    Save 14%
  • SW30-2521 Filmtec Seawater Desalination Reverse Osmosis Membrane
  • 8013619 Katadyn Pocket Replacement Camping Water Filter Kit

    8013619 Katadyn Pocket Replacement Camping Water Filter Kit

    $213.99
    MSRP: $257.99
    Save 17%
  • EV9324-01 Everpure Ice Machine Filter System

    EV9324-01 Everpure Ice Machine Filter System

    $218.99
    MSRP: $273.69
    Save 20%
  • AG2540TF Desal Reverse Osmosis Membrane

    AG2540TF Desal Reverse Osmosis Membrane

    $219.99
    MSRP: $226.54
    Save 3%
  • BBFS-222 Pentek Three Housing Filter System

    BBFS-222 Pentek Three Housing Filter System

    $224.99
    MSRP: $331.43
    Save 32%
  • 31040 Hydrologic Stealth-RO200 Reverse Osmosis Water Filtration System
  • AG4021TF Desal Commercial Reverse Osmosis Membrane

    AG4021TF Desal Commercial Reverse Osmosis Membrane

    $232.99
    MSRP: $270.24
    Save 14%
  • TW30-2540 Filmtec Commercial Reverse Osmosis Membrane

    TW30-2540 Filmtec Commercial Reverse Osmosis Membrane

    $233.99
    MSRP: $236.34
    Save 1%
  • 650716-006 Trojan UVMAX C4 UV Disinfection System Controller

    650716-006 Trojan UVMAX C4 UV Disinfection System Controller

    $234.99
    MSRP: $272.54
    Save 14%
  • 3M AquaPure 3MFF100 Drinking Water Filter System
  • RO-PL5000 PuROLine Reverse Osmosis Filter System

    RO-PL5000 PuROLine Reverse Osmosis Filter System

    $235.39
    MSRP: $318.99
    Save 26%
  • LSJC10RC Lifesaver 10000UF Jerrycan Replacement Filter Cartridge
  • 200393 Axeon Ultra Low Energy HF5-4021 Commercial Reverse Osmosis Membrane
  • 3M Aqua-Pure AP903 Water Filter System

    AP903 3M Aqua-Pure Water Filtration System

    $239.99
    MSRP: $342.69
    Save 30%
  • ST-2 Pentek Filter Housing - Stainless Steel

    ST-2 Pentek Filter Housing - Stainless Steel

    $242.89
    MSRP: $368.99
    Save 34%
  • 200391 Axeon Reverse Osmosis Membrane

    200391 Axeon Reverse Osmosis Membrane

    $243.99
    MSRP: $308.99
    Save 21%
  • FM-350-DWS Water Factory Systems FaucetMATE Faucet Filter System
  • PT3000T50-SS-AD PuROTwist PuROTwist Reverse Osmosis Filter System
  • TW30-4021 Filmtec Commercial Reverse Osmosis Membrane

    TW30-4021 Filmtec Commercial Reverse Osmosis Membrane

    $249.99
    MSRP: $289.79
    Save 14%
  • 650716-012 Trojan UVMAX C UV Disinfection System Controller

    650716-012 Trojan UVMAX C UV Disinfection System Controller

    $251.39
    MSRP: $297.99
    Save 16%
  • W9331208 Doulton Countertop Filter System

    W9331208 Doulton HCS Countertop Water Filtration System

    $253.94
    MSRP: $294.33
    Save 14%
  • PT4000T50-SS-AG PuROTwist PuROTwist Reverse Osmosis Filter System
  • W9381105 Doulton RIO 2000 Ceramic Multi-Candle Filter Cartridge
  • S1Q-PA Sterilight Silver Series UV Disinfection System

    S1Q-PA Sterilight Silver Series UV Disinfection System

    $255.99
    MSRP: $296.69
    Save 14%
  • SC10-11 Everpure Commercial Filter System

    SC10-11 Everpure Commercial Filter System

    $260.99
    MSRP: $298.99
    Save 13%
  • 200553 Axeon Membrane Housing

    200553 Axeon Membrane Housing

    $265.99
    MSRP: $308.19
    Save 14%
  • RO-3500 Pentek Reverse Osmosis Filter System

    RO-3500 Pentek Reverse Osmosis Filter System

    $266.39
    MSRP: $406.99
    Save 35%
  • 4VTFC50G Hydrotech Reverse Osmosis Filter System

    4VTFC50G Hydrotech Reverse Osmosis Filter System

    $267.99
    MSRP: $289.79
    Save 8%
  • 3M Aqua-Pure AP2150  Water Filter
  • S2Q-PA Sterilight Silver Series UV Disinfection System
  • HL4021TF GE Desal Nano Filtration Reverse Osmosis Element

    HL4021TF GE Desal Nano Filtration Reverse Osmosis Element

    $272.99
    MSRP: $316.24
    Save 14%
  • 200379 Axeon HF1-4040 Low Energy Reverse Osmosis Membrane

    200379 Axeon HF1-4040 Low Energy Reverse Osmosis Membrane

    $272.99
    MSRP: $325.99
    Save 16%
  • TW30-4040 Filmtec Commercial Reverse Osmosis Membrane

    TW30-4040 Filmtec Commercial Reverse Osmosis Membrane

    $275.99
    MSRP: $312.79
    Save 12%
  • 3M Aqua-Pure AP904 Carbon Water Filter

    AP904 3M Aqua-Pure Carbon Water Filter

    $278.99
    MSRP: $330.00
    Save 15%
  • BA-ICE-C Sterilight Cobalt ICE Basic UV Disinfection System Controller
  • 4VTFC50G-PB Hydrotech Pro Series Reverse Osmosis Filter System

    4VTFC50G-PB Hydrotech Pro Series Reverse Osmosis Filter System

    $279.99
    MSRP: $324.29
    Save 14%
  • ST-3 Pentek Filter Housing - Stainless Steel

    ST-3 Pentek Filter Housing - Stainless Steel

    $283.99
    MSRP: $345.79
    Save 18%
  • BW30-4040 Filmtec Brackish Water Industrial Reverse Osmosis Membrane
  • 200394 Axeon Reverse Osmosis Membrane

    200394 Axeon Reverse Osmosis Membrane

    $285.69
    MSRP: $375.99
    Save 24%
  • XLE-4040 Filmtec Extra Low Energy Commercial Reverse Osmosis Membrane
  • 4VTFC25G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    4VTFC25G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    $285.99
    MSRP: $324.29
    Save 12%
  • S2Q-PA Viqua Tap Plus UltraViolet Water Sterilization System

    S2Q-PA Viqua Tap Plus UltraViolet Water Sterilization System

    $288.89
    MSRP: $344.99
    Save 16%
  • WI-BG12000C Body Glove Replacement Filter Cartridge

    WI-BG12000C Body Glove Replacement Filter Cartridge

    $290.21
    MSRP: $386.95
    Save 25%

Items 1 to 48 of 59 total

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