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 172 total

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  • 36005 Hydrologic SmallBoy De-Chlorinator and Sediment Filter System With Upgraded KDF
  • 602805 Viqua Water Disinfection System UV Lamp

    602805 Viqua Water Disinfection System UV Lamp

    $105.00
    MSRP: $127.99
    Save 18%
  • Pentair HEPP10-30DB Pureflex High Efficiency Cartridge

    Pentair HEPP10-30DB Pureflex High Efficiency Cartridge

    $107.99
    MSRP: $130.99
    Save 18%
  • 208125 Axeon HF5-2514 Commercial Reverse Osmosis Membrane

    208125 Axeon HF5-2514 Commercial Reverse Osmosis Membrane

    $109.99
    MSRP: $130.99
    Save 16%
  • CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1
  • 602806 Viqua Water Disinfection System UV Lamp

    602806 Viqua Water Disinfection System UV Lamp

    $113.79
    MSRP: $141.99
    Save 20%
  • CP5-BBS-D Culligan Comparable Whole House Sediment Water Filter by Tier1 (12-Pack)
  • BA-ICE-S Viqua UV Disinfection System Controller

    BA-ICE-S Viqua UV Disinfection System Controller

    $119.09
    MSRP: $172.99
    Save 31%
  • 208083 Axeon HF5-2521 Commercial Reverse Osmosis Membrane

    208083 Axeon HF5-2521 Commercial Reverse Osmosis Membrane

    $119.99
    MSRP: $143.99
    Save 17%
  • Axeon TF-3012-500 Reverse Osmosis Membrane

    Axeon TF-3012-500 Reverse Osmosis Membrane

    $121.99
    MSRP: $161.99
    Save 25%
  • ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1 (6-Pack)
  • 602807 Viqua Water Disinfection System UV Lamp

    602807 Viqua Water Disinfection System UV Lamp

    $124.19
    MSRP: $154.99
    Save 20%
  • Viqua 602810-102 Lamp and Sleeve Kit for D Model Systems

    Viqua 602810-102 Lamp and Sleeve Kit for D Model Systems

    $124.19
    MSRP: $154.99
    Save 20%
  • 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%
  • Everpure EV9000-91 Antique Brass Drinking Faucet Head

    Everpure EV9000-91 Antique Brass Drinking Faucet Head

    $127.49
    MSRP: $153.99
    Save 17%
  • F-601R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
  • 650538 CoolTouch Temperature Management Valve

    650538 Viqua CoolTouch Temperature Management Valve

    $130.99
    MSRP: $175.00
    Save 25%
  • 200521 Axeon 4014 PVC Membrane Housing

    200521 Axeon 4014 PVC Membrane Housing

    $139.99
    MSRP: $173.99
    Save 20%
  • 31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    $153.99
    MSRP: $183.95
    Save 16%
  • RO5 Tier1 5-Stage Reverse Osmosis System

    5-Stage Reverse Osmosis System by Tier1

    $159.99
    MSRP: $249.99
    Save 36%
  • ECP5-BB Pentek Comparable Whole House Sediment Water Filter by Tier1 (12-Pack)
  • 200378 Axeon HF1-4021 Reverse Osmosis Membrane

    200378 Axeon HF1-4021 Reverse Osmosis Membrane

    $171.99
    MSRP: $238.99
    Save 28%
  • BA-ICE-V Viqua UV Disinfection System Controller

    BA-ICE-V Viqua UV Disinfection System Controller

    $175.00
    MSRP: $225.00
    Save 22%
  • P195BN Cuno Water Filter Cartridge

    P195BN 3M Cuno Water Filter Cartridge

    $176.99
    MSRP: $237.99
    Save 26%
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (12-Pack)
  • UV100A1059 Honeywell UV Surface Treatment System

    UV100A1059 Honeywell UV Surface Treatment System

    $183.19
    MSRP: $224.99
    Save 19%
  • TW30HP-2526 Filmtec Reverse Osmosis Membrane
  • 602854 Viqua Water Disinfection System UV Lamp

    602854 Viqua Water Disinfection System UV Lamp

    $185.00
    MSRP: $224.99
    Save 18%
  • DuPont WFRO60X Quick Twist Reverse Osmosis System
  • 208084 Axeon HF5-2540 Commercial Reverse Osmosis Membrane

    208084 Axeon HF5-2540 Commercial Reverse Osmosis Membrane

    $199.99
    MSRP: $259.99
    Save 23%
  • 602805 Trojan UV Max UV Lamp
  • 602806 Trojan UV Max UV Lamp
  • TFM50EM 3M Aqua-Pure Reverse Osmosis Membrane

    TFM50EM 3M Aqua-Pure PURWATER Reverse Osmosis Membrane

    $119.89
    MSRP: $203.99
    Save 41%
  • PBH-410-1 Pentek Bag Filter Housing with 1-inch Inlet/Outlet

    PBH-410-1 Pentek Filter Bag Housing

    $123.99
    MSRP: $126.34
    Save 2%
  • 602807 Trojan UV Max UV Lamp
  • 3M Aqua-Pure RM-TFC Reverse Osmosis Membrane

    RM-TFC 3M Aqua-Pure Reverse Osmosis Membrane

    $177.99
    MSRP: $232.29
    Save 23%
  • 602854 Trojan UV Max UV Lamp
  • Cuno HF90-S Replacement Filter Cartridge

    Cuno HF90-S Replacement Filter Cartridge

    $185.99
    MSRP: $243.79
    Save 24%
  • 3M Aqua-Pure AP802 Whole House Water Filter

    AP802 3M Aqua-Pure Whole House Water Filtration System

    $100.99
    MSRP: $118.44
    Save 15%
  • W9330962 Doulton Sterasyl Undersink Ceramic Candle Filter System
  • BT-100 Rainshow’r Breakthrough Drinking Water Filtration System
  • KDF85-20 Tier1 Water Filter

    KDF85-20 Tier1 Water Filter

    $102.99
    MSRP: $121.89
    Save 16%
  • 200369 Axeon HR3-2521 Commercial Reverse Osmosis Membrane

    200369 Axeon HR3-2521 Commercial Reverse Osmosis Membrane

    $102.99
    MSRP: $125.99
    Save 18%
  • THM-1 Everpure Replacement Filter Cartridge

    THM-1 Everpure Replacement Filter Cartridge

    $103.05
    MSRP: $157.54
    Save 35%
  • 3M Aqua-Pure RO3RC Reverse Osmosis Pre and Post Filter Set
  • 3M Aqua-Pure AP101T Whole House Water Filter

    AP101T 3M Aqua-Pure Whole House Water Filtration System

    $103.99
    MSRP: $137.99
    Save 25%
  • HF45-S Cuno Whole House Filter Replacement Cartridge

    HF45-S Cuno Whole House Filter Replacement Cartridge

    $103.99
    MSRP: $120.39
    Save 14%
  • W9120145 Doulton Replacement Candle Set (6-Pack)

    W9120145 Doulton Replacement Candle Set (6-Pack)

    $104.99
    MSRP: $118.30
    Save 11%

Items 1 to 48 of 172 total

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