Discount Water Filters and Air Filters at Discount Filter Store.com

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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 808 total

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  • CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1 (50-Pack)
  • 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
  • PT4000T50-SS-AG PuROTwist PuROTwist Reverse Osmosis Filter System
  • 5EZ-50 Valueline Reverse Osmosis Filter System

    5EZ-50 Valueline Reverse Osmosis Filter System

    $179.99
    MSRP: $186.29
    Save 3%
  • 66-1311 Water Factory Systems Reverse Osmosis Membrane
  • 66-1315 Water Factory Systems Reverse Osmosis Membrane

    66-1315 Water Factory Systems Reverse Osmosis Membrane

    $529.99
    MSRP: $611.79
    Save 13%
  • 66-4311 Water Factory Systems Reverse Osmosis Membrane

    66-4311 Water Factory Systems Reverse Osmosis Membrane

    $359.29
    MSRP: $693.99
    Save 48%
  • 66-4506G2 Water Factory Systems Countertop Reverse Osmosis Membrane
  • 3MROM413-20A Water Factory Systems TFC Reverse Osmosis Membrane
  • 66-4709G2 Water Factory Systems Reverse Osmosis Membrane

    66-8709G2 Water Factory Systems Reverse Osmosis Membrane

    $188.09
    MSRP: $251.99
    Save 25%
  • 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
  • 4VTFC25G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    4VTFC25G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    $285.99
    MSRP: $324.29
    Save 12%
  • 4VTFC50G Hydrotech Reverse Osmosis Filter System

    4VTFC50G Hydrotech Reverse Osmosis Filter System

    $267.99
    MSRP: $289.79
    Save 8%
  • 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%
  • 4VTFC75G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    4VTFC75G-PB Hydrotech Pushbutton Reverse Osmosis Filter System

    $299.99
    MSRP: $335.79
    Save 11%
  • 8017756 Katadyn MyBottle Ultralight Series 24-Ounce Personal Water Purifier Bottle - Blue Splash
  • LSB4 Lifesaver 4000UF Water Bottle
  • LSB6 Lifesaver 6000UF Water Bottle
  • LSJC10 Lifesaver 10000UF Jerrycan
  • LSJC20 Lifesaver 20000UF Jerrycan
  • 31040 Hydrologic Stealth-RO200 Reverse Osmosis Water Filtration System
  • LP-40 CUNO Water Factory Commercial Reverse Osmosis Water Filtration System
  • WHER25 Whirlpool Reverse Osmosis Undersink Water Filtration System
  • 31035 Hydrologic Stealth-RO100 Reverse Osmosis Filtration System

    31035 Hydrologic Stealth-150 Reverse Osmosis Filtration System

    $164.99
    MSRP: $225.00
    Save 27%
  • AP-RO5500 3M Aqua-Pure Reverse Osmosis System

    AP-RO5500 3M Aqua-Pure Reverse Osmosis System

    $499.99
    MSRP: $805.99
    Save 38%
  • 4373574 Whirlpool Undersink Filter Kit
  • 4373575 Whirlpool Undersink Filter Kit
  • DW-2000-RB American Plumber Replacement Filter Cartridge

    DW-2000-RB American Plumber Replacement Filter Cartridge

    $59.99
    MSRP: $61.28
    Save 2%
  • W10-PR American Plumber Whole House Filter System

    W10-PR American Plumber Whole House Filter System

    $59.99
    MSRP: $67.84
    Save 12%
  • 4002124 American Plumber Whole House Sediment Filter System

    4002124 American Plumber Whole House Sediment Filter System

    $699.99
    MSRP: $807.29
    Save 13%
  • WIC-600 American Plumber Undersink Filter System

    WIC-600 American Plumber Undersink Filter System

    $55.99
    MSRP: $58.34
    Save 4%
  • WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • WROM-230T American Plumber Reverse Osmosis Replacement Membrane
  • WROM-230TN American Plumber Reverse Osmosis Replacement Membrane
  • WROM-25T American Plumber Reverse Osmosis Membrane

    WROM-25T American Plumber Reverse Osmosis Membrane

    $96.99
    MSRP: $113.84
    Save 15%
  • 100186 Amway eSpring Replacement Filter Cartridge
  • 110194 Amway eSpring Replacement Filter Cartridge
  • 110720 Amway eSpring UV Water Purification System
  • ADS-APRC6 Aquapatrol Ice Machine Replacement Water Filter
  • 3M Aqua-Pure AP1003 Water Filter Replacement Cartridge (2-Pack)
  • 3M Aqua-Pure AP101T Whole House Water Filter

    AP101T 3M Aqua-Pure Whole House Water Filtration System

    $103.99
    MSRP: $137.99
    Save 25%
  • 3M Aqua-Pure AP111-2 Whole House Water Filter
  • 3M Aqua-Pure AP2150  Water Filter
  • 3M Aqua-Pure AP420 Water Filter Replacement Cartridge
  • 3M Aqua-Pure AP430SS Water Heater Scale Inhibitor

    AP430SS 3M Aqua-Pure Water Heater Scale Inhibitor System

    $70.99
    MSRP: $90.84
    Save 22%
  • 3M Aqua-Pure AP460 Replacement Filter Cartridge

Items 1 to 48 of 808 total

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