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. KX-MATRIKX-1-HD20 Technologies MatrikX Whole House Carbon Filter By Tier1

    KX-MATRIKX-1-HD20 Technologies MatrikX Whole House Carbon Filter By Tier1

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

    As Low As $0.00 Per Filter

  2. MATRIKX-5-HD20 KX Technologies MatrikX Comparable Whole House Carbon Filter by Tier1

    MATRIKX-5-HD20 KX Technologies MatrikX Comparable Whole House Carbon Filter by Tier1

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

    As Low As $0.00 Per Filter

  3. FLOPLUS-20BB Pentek Comparable Whole House Carbon Water Filter by Tier1

    FLOPLUS-20BB Pentek Comparable Whole House Carbon Water Filter by Tier1

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

    As Low As $0.00 Per Filter

  4. Cuno HF90-S Replacement Filter Cartridge

    Cuno HF90-S Replacement Filter Cartridge

    Fits the Cuno NH3 filter head and the ICE190-S filter system Learn More
    $185.99 MSRP:  $243.79
  5. WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge

    WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge

    Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings Learn More
    $35.99 MSRP:  $39.99
  6. WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    Fits American Plumber W2010-PR and W2015-PR and most other heavy duty water filter housings Learn More
    $69.99 MSRP:  $78.19
  7. 3M Aqua-Pure AP903 Water Filter System

    AP903 3M Aqua-Pure Water Filtration System

    Fits standard 1-inch pipe Learn More
    $239.99 MSRP:  $342.69
  8. 3M Aqua-Pure AP910R Water Filter

    AP910R 3M Aqua-Pure Replacement Filter Cartridge

    Fits the 3M Aqua-Pure AP902 Water Filtration System Learn More
    $118.99 MSRP:  $128.79
  9. 3M Aqua-Pure AP917R Water Filter Cartridge

    AP917R 3M Aqua-Pure Replacement Filter Cartridge

    Fits the 3M Aqua-Pure AP903 Water Filtration System Learn More
  10. CQE-WH-01132 Crystal Quest 2.0 Whole House Nitrate Filter System

    CQE-WH-01132 Crystal Quest 2.0 Whole House Nitrate Filter System

    Fits standard 3/4-inch or 1-inch water lines Learn More
    $1,659.99 MSRP:  $1911.29
  11. CQE-WH-01215 Crystal Quest Multi 1.5 Whole House Iron Hydrogen Sulfide Filter System

    CQE-WH-01215 Crystal Quest Multi 1.5 Whole House Iron Hydrogen Sulfide Filter System

    Fits standard 3/4-inch or 1-inch water lines Learn More
    $2,599.99 MSRP:  $2992.29
  12. HF8-S Cuno Whole House Filter Replacement Cartridge

    HF8-S Cuno Whole House Water Filter Cartridge

    Fits the Cuno Food Service SF18-S for high-temperature equipment Learn More
    $50.99 MSRP:  $62.09
  13. HF95 Cuno Whole House Filter Replacement Cartridge

    HF95 Cuno Whole House Water Filter Cartridge

    Fits the Cuno Food Service High Flow Series filtration system Learn More
    $197.99 MSRP:  $229.99
  14. HF95-S Cuno Whole House Water Filter Cartridge

    HF95-S Cuno Whole House Water Filter Cartridge

    Fits the Cuno Food Service High Flow Series Models including all SGP, ESP, BREW, BEV, and ICE filtration systems Learn More
    $195.99 MSRP:  $227.69
  15. 22070 Hydrologic BigBoy Replacement Carbon Filter

    22070 Hydrologic BigBoy Replacement Carbon Filter

    Fits into water filtration housing systems that accept 20 x 4.5 inch filter cartridges Learn More
    $88.99 MSRP:  $123.04
  16. MATRIKX-1-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-1-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More
    $39.99 MSRP:  $51.74
  17. FLOPLUS-20BB Pentek Replacement Filter Cartridge

    FLOPLUS-20BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $78.99 MSRP:  $95.99
  18. MATRIKX-1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More
    $99.99
  19. RS19 OmniFilter Reusable Screen Filter Cartridge

    RS19 OmniFilter Reusable Screened Water Filter Cartridge

    150 micron filter that fits into most industry standard size 10-inch water filtration system housings Learn More
    $14.49 MSRP:  $20.99
  20. TO8 OmniFilter Whole House Replacement Filter Cartridge

    TO8 OmniFilter Whole House Replacement Water Filter Cartridge

    Fits into most 10-inch water filtration system housings Learn More
    $34.99 MSRP:  $44.84
  21. CBC20-BB Pentek Replacement Filter Cartridge

    CBC20-BB Pentek Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $114.17
  22. CBC-BB Pentek Whole House Filter Replacement Cartridge

    CBC-BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek Big Blue and other heavy-duty filter housings Learn More
    $60.59
  23. CFB-PLUS20BB Pentek Replacement Water Filter Cartridge

    CFB-PLUS20BB Pentek Replacement Water Filter Cartridge

    Fits into most Big Blue water filtration system housings that accept 20-inch x 4.5-inch filter cartridges Learn More
    $45.39 MSRP:  $67.99
  24. 3M Aqua-Pure AP902 Whole House Water Filter

    AP902 3M Aqua-Pure Whole House Water Filtration System

    Fits multiple styles of water filter cartridge, based on your water quality Learn More
    $204.99 MSRP:  $238.04
  25. CQE-RC-04016 Crystal Quest Multi Stage PLUS Water Filter Cartridge

    CQE-RC-04016 Crystal Quest Multi Stage PLUS Water Filter Cartridge

    For use primarily in Crystal Quest low flow countertop and undersink filtration systems. Also fits select refrigerator water filtration systems. Sized 2 7/8 inches by 20 inches. Learn More
    $143.19 MSRP:  $176.99

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