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. P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  2. 35430 Brita Grand Pitcher Orange

    35430 Brita Grand Pitcher Orange

    $41.99 MSRP:  $45.99
  3. Pentair NEPP2-40DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP2-40DB Pureflex Pleated Polypropylene Cartridge

    Fits standard filter housings that accept 40 x 2.5-inch filters Learn More
    $41.99 MSRP:  $52.99
  4. CB6 OmniFilter Comparable Whole House Carbon Water Filter by Tier1

    CB6 OmniFilter Comparable Whole House Carbon Water Filter by Tier1

    Fits filtration system housings that accepts 10 x 4.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  5. KX-MATRIKX-1-HD10 KX Matrikx Comparable Whole House Carbon Water Filter By Tier1

    KX-MATRIKX-1-HD10 KX Matrikx Comparable Whole House Carbon Water Filter By Tier1

    Fits filtration system housings that accepts 10 x 4.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  6. FLOPLUS-10BB Pentek Comparable Whole House Carbon Water Filter by Tier1

    FLOPLUS-10BB Pentek Comparable Whole House Carbon Water Filter by Tier1

    Fits filtration system housings that accepts 10 x 4.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  7. DuPont WFFS150XCH Chrome Counter Top Faucet System
  8. TFM-50-A Tier1 Reverse Osmosis Membrane

    TFM-50-A Tier1 Reverse Osmosis Membrane

    Fits select Culligan reverse osmosis systems Learn More
  9. 1-40100-2-RES Seychelle Dual Filter and Reservoir

    1-40100-2-RES Seychelle Dual Filter and Reservoir

    Fits Seychelle Gen 1 (older) pitcher style Learn More
    $45.99 MSRP:  $49.95
  10. TW30-1812-50 Watts Comparable Reverse Osmosis Membrane by Tier1

    TW30-1812-50 Watts Comparable Reverse Osmosis Membrane by Tier1

    Fits select Culligan reverse osmosis systems Learn More
  11. TF-1812-50 Axeon Comparable Reverse Osmosis Membrane by Tier1

    TF-1812-50 Axeon Comparable Reverse Osmosis Membrane by Tier1

    Fits select Culligan reverse osmosis systems Learn More
  12. WS01-WH Filtrete Water Station Filtered Water Bottle Filling Station
  13. EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek 20-inch Big Blue and other heavy-duty filter housings Learn More

    As Low As $43.66 Per Filter

  14. EP-20BB Pentek Comparable Carbon Block Water Filter by Tier1

    EP-20BB Pentek Comparable Carbon Block Water Filter by Tier1

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More

    As Low As $36.00 Per Filter

  15. MAXETW-FF20 Watts Comparable C-MAX Whole House Water Filter Cartridge by Tier1

    MAXETW-FF20 Watts Comparable C-MAX Whole House Water Filter Cartridge by Tier1

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  16. CB-45-2010 Hydronix Comparable Replacement Filter Cartridge by Tier1

    CB-45-2010 Hydronix Comparable Replacement Filter Cartridge by Tier1

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  17. RFC-20BB Whole House Filter Replacement Cartridge by Tier1

    RFC-20BB Whole House Filter Replacement Cartridge by Tier1

    Fits most 20X4.5 housings Learn More
    $48.99 MSRP:  $56.99
  18. 602733 Viqua Quartz Sleeve for 602806 UV Lamp

    602733 Viqua Quartz Sleeve for 602806 UV Lamp

    For use with Viqua ultraviolet disinfection systems using the 602806 UV lamp Learn More
    $49.00 MSRP:  $64.00
  19. FQK2J GE Undersink Water Filter Set

    FQK2J GE Undersink Water Filter Set

    Fits GE SmartWater undersink filter systems Learn More
    $49.98 MSRP:  $49.99
  20. C2-02 Viqua Carbon Whole House Filter

    C2-02 Viqua Carbon Whole House Filter

    Fits most 20 x 4.5-inch filter housings including the Viqua IHS12-D4 and IHS22-D4 water disinfection systems. Learn More
    $49.99 MSRP:  $89.00
  21. Pentair NEPP12-40DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP12-40DB Pureflex Pleated Polypropylene Cartridge

    Fits standard filter housings that accept 40 x 2.5-inch filters Learn More
    $49.99 MSRP:  $61.99
  22. 10-212 Pentek UV Lamp

    10-212 Pentek UV Lamp

    Fits the Pentek UVS-110 UltraViolet Filtration System Learn More
    $49.69 MSRP:  $64.99
  23. 67300 Aquamira Home Emergency Drinking Water Kit
  24. APHOSF-RC 3M Aqua-Pure High-Output Shower Filter Cartridge

    APHOSF-RC 3M Aqua-Pure High-Output Shower Filter Cartridge

    Fits 3M Aqua-Pure high-output filtered showerheads Learn More
  25. 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

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