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

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Water Filtration Systems, Filters, & Parts

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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  1. HF20-S Cuno Whole House Filter Replacement Cartridge

    HF20-S Cuno Whole House Filter Replacement Cartridge

    Fits the Cuno Food Service High Flow Series Models including all SGP, ESP, BREW, BEV, and ICE Systems Learn More
    $68.99 MSRP:  $86.24
  2. U30 OmniFilter Whole House Water Filter System
  3. 31051 Hydrologic Triton DI100 Aquarium Reverse Osmosis System
  4. WHER25 Whirlpool Reverse Osmosis Undersink Water Filtration System

    WHER25 Whirlpool Reverse Osmosis Undersink Water Filtration System

    Fits and installs easily beneath standard sized sinks Learn More
  5. WIC-6A American Plumber Inline Icemaker Filter
  6. WICA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings

    WICA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings

    Fits any 1/4-inch water line Learn More
    $14.09 MSRP:  $18.50
  7. WICSA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings

    WICSA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings

    Fits any 1/4-inch water line Learn More
    $15.39 MSRP:  $20.00
  8. 3M Aqua-Pure APIL3R Inline Water Filter

    APIL3R 3M Aqua-Pure Inline Water Filter Cartridge

    Fits the 3M Aqua-Pure APIL3 inline water filtration system Learn More
  9. IC-100A Culligan Level 1 Disposable Inline Filter
  10. RC-EZ-1 Culligan Level 1 Easy-Change Inline Filter Replacement Cartridge

    RC-EZ-1 Culligan Level 1 Easy-Change Inline Filter Replacement Cartridge

    Fits Culligan Easy-Change filter systems including IC-EZ-1, US-EZ-1, and RV-EZ-1 Learn More
    $15.99 MSRP:  $22.99
  11. RC-EZ-3 Culligan Level 3 Easy-Change Inline Filter Replacement Cartridge

    RC-EZ-3 Culligan Level 3 Easy-Change Inline Filter Replacement Cartridge

    Fits Culligan Easy-Change filter systems including IC-EZ-3, US-EZ-3, and RV-EZ-3 Learn More
    $24.99 MSRP:  $31.04
  12. RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    Fits Culligan Easy-Change filter systems including IC-EZ-4, US-EZ-4, and RV-EZ-4 Learn More
    $45.19 MSRP:  $78.99
  13. US-600 Culligan Slim Undersink Filter System
  14. HC111-S Cuno Replacement Filter Cartridge

    HC111-S Cuno Replacement Filter Cartridge

    Fits the Cuno VB2 and HC111-S filter systems Learn More
    $37.99 MSRP:  $54.99
  15. DD-7098 Daewoo Inline Filter

    DD-7098 Daewoo Inline Filter

    Fits Daewoo, Bosch, Siemens, and other refrigerator brands with an external inline water filter Learn More
    $31.89 MSRP:  $40.99
  16. GS-10RO-H-38 Desal Reverse Osmosis Carbon Post Filter

    GS-10RO-H-38 Desal Reverse Osmosis Carbon Post Filter

    Fits the GE Merlin Reverse Osmosis System Learn More
    $18.99 MSRP:  $27.99
  17. TFM-50EB Desal Encapsulated Reverse Osmosis Membrane

    TFM-50EB Desal Encapsulated Reverse Osmosis Membrane

    Fits commercial reverse osmosis systems that accept 50 gallon per day encapsulated membranes Learn More
  18. TFM-75EB Desal Encapsulated Reverse Osmosis Membrane

    TFM-75EB Desal Encapsulated Reverse Osmosis Membrane

    Fits commercial reverse osmosis systems that accept 75 gallon per day encapsulated membranes Learn More
    $74.99 MSRP:  $114.99
  19. TLC-150EB Desal Encapsulated Reverse Osmosis Membrane

    TLC-150EB Desal Encapsulated Reverse Osmosis Membrane

    Fits commercial reverse osmosis systems that accept 150 gallon per day encapsulated membranes Learn More
  20. EV9256-20 Everpure QL1 Single Filter Head with Bracket and 1/4 inch Quick-Connect Fittings

    EV9256-20 Everpure QL1 Single Water Filter Head

    Fits Everpure water filter cartridges exclusively. Comes with Bracket and 1/4 inch Quick-Connect Fittings. Learn More
    $36.49 MSRP:  $52.99
  21. H-300 Everpure Under Sink Filter System

    H-300 Everpure Under Sink Filter System

    $310.99 MSRP:  $373.74
  22. GXRLQK GE SmartWater Inline Filter System

    GXRLQK GE SmartWater Inline Filter System

    Fits any 1/4-inch plastic or copper water line Learn More
    $37.59 MSRP:  $54.99
  23. FQK1K GE SmartWater Inline Filter Replacement Cartridge

    FQK1K GE SmartWater Inline Filter Replacement Cartridge

    Fits the GE SmartWater GXRLQK filter system as well as GXK185K, GXRLQR, GX1S50R Learn More
    $36.49 MSRP:  $44.99 As low as: $36.49
  24. GXRTDR GE SmartWater Inline Filter Cartridge

    GXRTDR GE SmartWater Inline Filter Cartridge

    Fits any 1/4-inch plastic or copper water line Learn More
    $20.99 MSRP:  $30.99 As low as: $20.99
  25. ICF-10Q Hydronix Inline Coconut Carbon Filter

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