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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  • 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.

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Items 1 to 48 of 50 total

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  • 3WH-HD-S01 Filtrete Whole House Sump System

    3WH-HD-S01 3M Filtrete Whole House Sump Filter System

    $54.99
    MSRP: $66.69
    Save 18%
  • 4WH-QCTO-S01 Filtrete Whole House Filter System

    4WH-QCTO-S01 3M Filtrete Whole House Water Filtration System

    $120.99
    MSRP: $174.79
    Save 31%
  • 4WH-QS-S01 Filtrete Whole House Filter System

    4WH-QS-S01 3M Filtrete Whole House Water Filtration System

    $109.99
    MSRP: $128.79
    Save 15%
  • 150235 Pentek Whole House Filter System

    150235 Pentek Whole House Filter System

    $64.99
    MSRP: $73.36
    Save 11%
  • PENTEK-150574

    PENTEK-150574

    $33.99
    MSRP: $34.26
    Save 1%
  • PENTEK-150576

    PENTEK-150576

    $38.99
    MSRP: $48.52
    Save 20%
  • PENTEK-153001

    PENTEK-153001

    $22.99
  • PENTEK-153017

    PENTEK-153017

    $11.29
    MSRP: $15.28
    Save 26%
  • PENTEK-153029

    PENTEK-153029

    $32.99
  • PENTEK-153070

    PENTEK-153070

    $51.99
    MSRP: $57.95
    Save 10%
  • PENTEK-158642

    PENTEK-158642

    $19.99
  • PENTEK-158129

    PENTEK-158129

    $29.99
  • 3M Aqua-Pure AP902 Whole House Water Filter

    AP902 3M Aqua-Pure Whole House Water Filtration System

    $204.99
    MSRP: $238.04
    Save 14%
  • 150069 Pentek 20” Water Filter Housing

    150069 Pentek 20-inch Water Filter Housing

    $34.99
    MSRP: $49.44
    Save 29%
  • PENTEK-158114

    PENTEK-158114

    $12.99
  • Pentek 150070 20 inch Blue Standard Filter Housing

    Pentek 150070 20 inch Blue Standard Filter Housing

    $36.99
    MSRP: $43.69
    Save 15%
  • 31051 Hydrologic Triton DI100 Aquarium Reverse Osmosis System

    31051 Hydrologic Triton DI100 Aquarium Reverse Osmosis System

    $215.99
    MSRP: $261.00
    Save 17%
  • BOTTLE-BLUE-FILTER-INSIDE Brita 20-Ounce Water Purifier Bottle - Blue
  • 20Z-NBL Built NY Bottle Tote - Blue
  • BBY-1TT-BLU Built NY Thirsty Bottle Tote - Blue
  • HBSF-Blu Hydros Side-Fill Water Purifier Bottle - Blue Lid
  • 8017756 Katadyn MyBottle Ultralight Series 24-Ounce Personal Water Purifier Bottle - Blue Splash
  • K27PPS-OB Klean Kanteen 27-Ounce Stainless Steel Water Bottle with Sport-Top - Ocean Blue
  • KK-BOTTLE-BLUE-PLANET-27-SPORT
  • LP-40 CUNO Water Factory Commercial Reverse Osmosis Water Filtration System
  • Brita Blue Filtered Water Bottle (#35558)

    Brita Blue Filtered Water Bottle (#35558)

    $19.99
    MSRP: $24.99
    Save 20%
  • ZeroWater Filtered Tumbler

    ZeroWater Filtered Tumbler (26 oz., #ZT-026i)

    $12.99
    MSRP: $28.74
    Save 55%
  • ZeroWater Filtered Tumbler & Replacement Filters (26 ounce, #ZT-M01)
  • ATLANTIS-BLUE-PITCHER Brita 48-Ounce Water Pitcher

    Brita Atlantis Blue Water Filter Pitcher (48 Ounce)

    $26.99
    MSRP: $33.34
    Save 19%
  • 3WH-STD-S01 Filtrete Whole House Sump System

    3WH-STD-S01 3M Filtrete Whole House Sump Filter System

    $26.99
    MSRP: $33.34
    Save 19%
  • ZP-006 ZeroWater 6-cup Space Saver Water Pitcher - Blue

    ZP-006 ZeroWater Water Filter Pitcher - Blue SpaceSaver

    $25.99
    MSRP: $32.19
    Save 19%
  • H10-B Brondell H2O+ Water Filter Pitcher (6-Cup)

    H10-B Brondell H2O+ Water Filter Pitcher (6-Cup)

    $34.99
    MSRP: $37.94
    Save 8%
  • GE-WS03X10016

    GE-WS03X10016

    $5.99
    MSRP: $28.94
    Save 79%
  • BB-TB Sprite Bath Ball Filter (Transparent Blue)

    BB-TB Sprite Bath Ball Filter (Transparent Blue)

    $26.69
    MSRP: $33.99
    Save 21%
  • FiftyFifty 27 oz. S25001BLU Blue Insulated Water Bottle

    FiftyFifty S25001BLU Blue Insulated Water Bottle (27 oz)

    $11.99
    MSRP: $18.99
    Save 37%
  • NUBO-BOTTLE-57-3038

    NUBO-BOTTLE-57-3038

    $17.99
  • AF-20-3690-BB Aries Replacement Whole House Fluoride Removal Filter

    AF-20-3690-BB Aries Whole House Fluoride Removal Filter

    $126.05
    MSRP: $171.99
    Save 27%
  • WFPF13003B DuPont Universal Whole House Filtration System
  • WFHD13001B DuPont Universal Heavy Duty Whole House Filtration System
  • 1833-0001 WaterBrick 3.5 Gallon Stackable Water and Food Storage
  • 1833-0005 WaterBrick 1.6 Gallon Stackable Water and Food Storage
  • WB-0001 WaterBrick Ventless Spigot Assembly

    WB-0001 WaterBrick Ventless Spigot Assembly

    $17.99
    MSRP: $22.99
    Save 22%
  • 35735 Brita Pacifica Pitcher Filter System
  • Pentek 150236 Big Blue Heavy Duty Filter Housing

    Pentek 150236 Big Blue Heavy Duty Filter Housing

    $58.99
    MSRP: $73.99
    Save 20%
  • 150240 Pentek 10-inch Big Blue Housing

    150240 Pentek 10-inch Big Blue Housing

    $29.99
    MSRP: $42.00
    Save 29%

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