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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  1. DW-200-R American Plumber Undersink Filter Replacement Cartridge

    DW-200-R American Plumber Undersink Filter Replacement Cartridge

    Fits Cuno AP-200 and PurWater PW-200 housings Learn More
    $19.59 MSRP:  $26.99
  2. RWC-5 American Plumber Undersink Filter Replacement Cartridge

    RWC-5 American Plumber Undersink Filter Replacement Cartridge

    Fits most standard size water filter housings Learn More
  3. ISH-100 Culligan Level 2 Inline Shower Filter for 1/2 inch thread Shower Heads

    ISH-100 Culligan Level 2 Inline Shower Filter for 1/2 inch thread Shower Heads

    Fits any standard 1/2-inch threaded shower arm Learn More
    $26.69 MSRP:  $35.99
  4. ISH-200 Culligan Inline Shower Filter - Chrome

    ISH-200 Culligan Inline Shower Filter - Chrome

    Fits any 1/2-inch thread shower heads Learn More
    $33.19 MSRP:  $44.99
  5. RDSH-C115 Culligan Showerhead

    RDSH-C115 Culligan Showerhead

    Fits any 1/2-inch thread shower heads Learn More
    $38.99 MSRP:  $55.99
  6. RFC-BBS-D Culligan Level 4 Whole House Filter Replacement Cartridge

    RFC-BBS-D Culligan Level 4 Whole House Filter Replacement Cartridge

    Fits Culligan HD-950, and any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $29.99 MSRP:  $34.99
  7. RWC-5 Culligan Level 1 Undersink Filter Replacement Cartridge

    RWC-5 Culligan Level 1 Undersink Filter Replacement Cartridge

    Fits Culligan Fulflo, WC12, LCA, WS-12, and any brand of water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $12.99 MSRP:  $17.24
  8. CFS117-S Cuno Whole House Filter Replacement Cartridge

    CFS117-S Cuno Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $32.05 MSRP:  $40.24
  9. HF40-S Cuno Whole House Filter Replacement Cartridge

    HF40-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
    $105.99 MSRP:  $123.04
  10. HF45-S Cuno Whole House Filter Replacement Cartridge

    HF45-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
    $103.99 MSRP:  $120.39
  11. TW30-1812-100HR Filmtec Reverse Osmosis Membrane (100GPD)

    TW30-1812-100HR Filmtec Reverse Osmosis Membrane (100GPD)

    Fits 100 gallon per day reverse osmosis systems from various brands Learn More
    $39.99 MSRP:  $48.29
  12. TW30-1812-24 Filmtec Reverse Osmosis Membrane

    TW30-1812-24 Filmtec Reverse Osmosis Membrane

    Fits 24 gallon per day reverse osmosis systems from various brands Learn More
    $23.99 MSRP:  $40.24
  13. TW30-1812-36 Filmtec Reverse Osmosis Membrane

    TW30-1812-36 Filmtec Reverse Osmosis Membrane

    Fits 36 gallon per day reverse osmosis systems from various brands Learn More
    $44.39 MSRP:  $62.99
  14. TW30-1812-50 Filmtec Reverse Osmosis Membrane

    TW30-1812-50 Filmtec Reverse Osmosis Membrane (50 GPD)

    Fits 50 gallon per day reverse osmosis systems from various brands Learn More
    $25.99 MSRP:  $51.74
  15. TW30-1812-75 Filmtec Reverse Osmosis Membrane

    TW30-1812-75 Filmtec Reverse Osmosis Membrane

    Fits 75 gallon per day reverse osmosis systems from various brands Learn More
  16. 3US-AF01 Filtrete Undersink Filter Replacement Cartridge

    3US-AF01 Filtrete Undersink Filter Replacement Cartridge

    Fits Filtrete 3US-AS01, 3US-PS01, and Whirlpool WHCF-SUF, WHCF-SUFC water filter systems Learn More
    $27.99 MSRP:  $28.99
  17. 3US-AS01 Filtrete Undersink Filter System
  18. 3US-PF01 Filtrete Undersink Filter Replacement Cartridge

    3US-PF01 Filtrete Undersink Filter Replacement Cartridge

    Fits Filtrete 3US-AS01, 3US-PS01, and Whirlpool WHCF-SUF, WHCF-SUFC water filter systems Learn More
    $35.99 MSRP:  $37.99
  19. GXULQ GE Undersink Filter System

    GXULQ GE Undersink Filter System

    $55.99 MSRP:  $70.14
  20. GXULQR GE Undersink Water Filter Replacement Cartridge

    GXULQR GE Undersink Water Filter Replacement Cartridge

    Fits the GE GXULQ and GNULQ Systems Learn More
    $41.99
  21. K00174 Manitowoc Tri-Liminator Replacement Ice Maker Filter Cartridge

    K00174 Manitowoc Tri-Liminator Ice Maker Filter

    Fits Manitowoc Tri-L ice maker filter systems Learn More
  22. CFBC-20 Pentek Replacement Filter Cartridge

    CFBC-20 Pentek Replacement Water Filter Cartridge

    Fits into most standard water filtration system housings that accept 20-inch x 2.5-inch cartridges Learn More
    $23.49 MSRP:  $29.31
  23. FLOPLUS-10BB Pentek Replacement Filter Cartridge

    FLOPLUS-10BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $44.99 MSRP:  $48.52
  24. FLOPLUS-20 Pentek Replacement Filter Cartridge

    FLOPLUS-20 Pentek Replacement Filter Cartridge

    Fits most housings that accept standard 20-inch x 2.5-inch water filter cartridges Learn More
    $28.99 MSRP:  $31.84
  25. GAC-20 Pentek Replacement Filter Cartridge

    GAC-20 Pentek Replacement Filter Cartridge

    Fits most housings that accept standard 20-inch x 2.5-inch water filter cartridges Learn More
    $18.49 MSRP:  $29.99

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