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.

Clear All
Compare

Items 1 to 48 of 210 total

Page:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Grid  List 

Set Ascending Direction
  • SST1HA 3M Aqua-Pure Water Filter System Housing
  • 3M Aqua-Pure AP902 Whole House Water Filter

    AP902 3M Aqua-Pure Whole House Water Filtration System

    $204.99
    MSRP: $238.04
    Save 14%
  • 31051 Hydrologic Triton DI100 Aquarium Reverse Osmosis System

    31051 Hydrologic Triton DI100 Aquarium Reverse Osmosis System

    $215.99
    MSRP: $261.00
    Save 17%
  • BBFS-222 Pentek Three Housing Filter System

    BBFS-222 Pentek Three Housing Filter System

    $224.99
    MSRP: $331.43
    Save 32%
  • 3M Aqua-Pure AP903 Water Filter System

    AP903 3M Aqua-Pure Water Filtration System

    $239.99
    MSRP: $342.69
    Save 30%
  • 3M Aqua-Pure AP904 Carbon Water Filter

    AP904 3M Aqua-Pure Carbon Water Filter

    $278.99
    MSRP: $330.00
    Save 15%
  • SST2HB 3M Aqua-Pure Whole House Filter System

    SST2HB 3M Aqua-Pure Whole House Water Filtration System

    $350.99
    MSRP: $415.12
    Save 15%
  • SED-100DM Tier1 Metered Sediment Reduction Backwash Water Filter System
  • ST-BC-4 Pentek Filter Housing - Stainless Steel

    ST-BC-4 Pentek Filter Housing - Stainless Steel

    $759.05
    MSRP: $1,009.11
    Save 25%
  • CQE-WH-01132 Crystal Quest 2.0 Whole House Nitrate Filter System

    CQE-WH-01132 Crystal Quest 2.0 Whole House Nitrate Filter System

    $1,659.99
    MSRP: $1,911.29
    Save 13%
  • 31040 Hydrologic Stealth-RO200 Reverse Osmosis Water Filtration System
  • RO-PL5000 PuROLine Reverse Osmosis Filter System

    RO-PL5000 PuROLine Reverse Osmosis Filter System

    $232.39
    MSRP: $318.99
    Save 27%
  • PT3000T50-SS-AD PuROTwist PuROTwist Reverse Osmosis Filter System
  • LSB6 Lifesaver 6000UF Water Bottle
  • PT4000T50-SS-AG PuROTwist PuROTwist Reverse Osmosis Filter System
  • 4VTFC50G Hydrotech Reverse Osmosis Filter System
  • 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%
  • 4VTFC25G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    4VTFC25G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    $285.99
    MSRP: $324.29
    Save 12%
  • 4VTFC75G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    4VTFC75G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    $299.99
    MSRP: $335.79
    Save 11%
  • LSJC10 Lifesaver 10000UF Jerrycan
  • 66-4311 Water Factory Systems Reverse Osmosis Membrane
  • 66-1311 Water Factory Systems Reverse Osmosis Membrane
  • SQC-3 Water Factory Systems Reverse Osmosis Filter System

    SQC-3 Water Factory Systems Reverse Osmosis Filter System

    $389.99
    MSRP: $450.79
    Save 13%
  • SQC-4 Water Factory Systems Reverse Osmosis Filter System
  • LSJC20 Lifesaver 20000UF Jerrycan
  • AP-RO5500 3M Aqua-Pure Reverse Osmosis System
  • 66-1315 Water Factory Systems Reverse Osmosis Membrane
  • LP-40 CUNO Water Factory Commercial Reverse Osmosis Water Filtration System
  • XLE-2540 Filmtec Extra Low Energy Commercial Reverse Osmosis Membrane
  • 8013619 Katadyn Pocket Replacement Camping Water Filter Kit

    8013619 Katadyn Pocket Replacement Camping Water Filter Kit

    $206.99
    MSRP: $257.99
    Save 20%
  • SW30-2521 Filmtec Seawater Desalination Reverse Osmosis Membrane
  • EV9324-01 Everpure Ice Machine Filter System

    EV9324-01 Everpure Ice Machine Filter System

    $218.99
    MSRP: $273.69
    Save 20%
  • WHADVS5/WHED20 Whirlpool Undersink Water Filtration System
  • 8017763 Katadyn Camping Filter System

    8017763 Katadyn Camping Filter System

    $219.95
    MSRP: $255.24
    Save 14%
  • AG2540TF Desal Reverse Osmosis Membrane

    AG2540TF Desal Reverse Osmosis Membrane

    $219.99
    MSRP: $226.54
    Save 3%
  • 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%
  • 200393 Axeon Ultra Low Energy HF5-4021 Commercial Reverse Osmosis Membrane
  • LSJC10RC Lifesaver 10000UF Jerrycan Replacement Filter Cartridge
  • ST-2 Pentek Filter Housing - Stainless Steel

    ST-2 Pentek Filter Housing - Stainless Steel

    $239.89
    MSRP: $368.99
    Save 35%
  • 200391 Axeon Reverse Osmosis Membrane

    200391 Axeon Reverse Osmosis Membrane

    $240.99
    MSRP: $308.99
    Save 22%
  • FM-350-DWS Water Factory Systems FaucetMATE Faucet Filter System
  • 650716-006 Trojan UVMAX C4 UV Disinfection System Controller

    650716-006 Trojan UVMAX C4 UV Disinfection System Controller

    $249.00
    MSRP: $272.54
    Save 9%
  • TW30-4021 Filmtec Commercial Reverse Osmosis Membrane

    TW30-4021 Filmtec Commercial Reverse Osmosis Membrane

    $249.99
    MSRP: $289.79
    Save 14%
  • 602856 Trojan UVMAX J UV Disinfection System Lamp
  • S1Q-PA Sterilight Silver Series UV Disinfection System

    S1Q-PA Sterilight Silver Series UV Disinfection System

    $255.00
    MSRP: $296.69
    Save 14%
  • SC10-11 Everpure Commercial Filter System

    SC10-11 Everpure Commercial Filter System

    $260.99
    MSRP: $298.99
    Save 13%
  • RO-3500 Pentek Reverse Osmosis Filter System

Items 1 to 48 of 210 total

Page:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Grid  List 

Set Ascending Direction
Scroll To Top