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. 3M Aqua-Pure AP101T Whole House Water Filter

    AP101T 3M Aqua-Pure Whole House Water Filtration System

    Fits onto 3/4-inch NPT water lines Learn More
    $103.99 MSRP:  $137.99

    Out of stock

  2. 3M Aqua-Pure AP110-2 Whole House Water Filter Cartridge

    AP110-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
    $20.99 MSRP:  $24.94
  3. 3M Aqua-Pure AP110-2C Whole House Water Filter Cartridge

    AP110-2C 3M Aqua-Pure Whole House Water Filter Cartridge

    Fits 3M Aqua-Pure whole house water filtration systems that accept 20 x 2.5 inch filters Learn More
  4. 3M Aqua-Pure AP110-3 Whole House Water Filter

    AP110-3 3M Aqua-Pure Replacement Water Filter Cartridge

    Fits the 3M Aqua-Pure AP110 Series of whole house water filtration systems Learn More
    $29.99 MSRP:  $34.49
  5. 3M Aqua-Pure AP810 Whole House Water Filter Cartridge

    3M Aqua-Pure AP810 Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $33.99 MSRP:  $46.64
  6. 3M Aqua-Pure AP810-2 Whole House Water Filter Cartridge

    AP810-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
    $52.99 MSRP:  $84.20
  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

    Out of stock

  9. CP5-BBS-D Culligan Level 4 Whole House Filter Replacement Cartridge

    CP5-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
    $17.99
  10. CFS517 Cuno Whole House Filter Replacement Cartridge

    CFS517 Cuno Whole House Filter Replacement Cartridge

    Fits any filtration system that uses the Cuno 8000 Series Replacement Cartridges Learn More
    $76.99 MSRP:  $87.39
  11. CFS8110 Cuno Whole House Filter Replacement Cartridge

    CFS8110 Cuno Whole House Filter Replacement Cartridge

    Fits any filtration system that uses the Cuno 8000 Series Replacement Cartridges Learn More
    $56.99 MSRP:  $61.97
  12. CFS8720 Cuno Whole House Filter Replacement Cartridge

    CFS8720 Cuno Whole House Filter Replacement Cartridge

    Fits any filtration system that uses the Cuno 8000 Series Replacement Cartridges Learn More
    $52.05 MSRP:  $61.97
  13. CFS8720-S Cuno Whole House Filter Replacement Cartridge

    CFS8720-S Cuno Whole House Filter Replacement Cartridge

    Fits any filtration system that uses the Cuno 8000 Series Replacement Cartridges Learn More
    $58.05 MSRP:  $64.39
  14. CFS9720 Cuno Whole House Filter Replacement Cartridge

    CFS9720 Cuno Whole House Filter Replacement Cartridge

    Fits any filtration system that uses the Cuno 9000 Series Replacement Cartridges or the Everpure QL Series filter heads Learn More
  15. P-124B Cuno Whole House Filter Replacement Cartridge

    P-124B Cuno Whole House Water Filter Cartridge

    Fits the Cuno Food Service ScaleGuard Pro Softening Systems SGP-124B and SGP-248B Learn More
    $97.05 MSRP:  $128.79
  16. SWC1350-C Cuno Whole House Filter Replacement Cartridge

    SWC1350-C Cuno Whole House Water Filter Cartridge

    Fits the Cuno Food Service CFS6090-C and CFS6135-C Water Treatment Systems Learn More
    $60.99 MSRP:  $81.64
  17. 4WH-HDGAC-F01 Filtrete Replacement Filter Cartridge
  18. 4WH-HDGR-F01 Filtrete Replacement Filter Cartridge
  19. 4WH-QCTO-F01 Filtrete Replacement Filter Cartridge

    4WH-QCTO-F01 3M Filtrete Replacement Water Filter

    Fits 3M Filtrete High Performance Whole House water filtration systems Learn More
    $96.99 MSRP:  $128.79
  20. 4WH-QS-F01 Filtrete Replacement Filter Cartridge

    4WH-QS-F01 3M Filtrete Replacement Water Filter

    Fits 3M Filtrete High Performance Whole House water filtration systems Learn More
  21. 4WH-STDGR-F02 Filtrete Replacement Filter Cartridge (2-Pack)
  22. HB-10-5W Harmsco Calypso Blue Replacement Filter Cartridge

    HB-10-5W Harmsco Calypso Blue Replacement Filter Cartridge

    Fits any industry standard housing that accepts 4.5-inch by 10-inch replacement filters. Learn More
    $22.99 MSRP:  $24.14
  23. HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    Fits any industry standard housing that accepts 4.5-inch by 20-inch replacement filters. Learn More
    $31.99 MSRP:  $36.79
  24. 22017 Hydrologic Replacement De-Ionization Cartridge

    22017 Hydrologic Deionization Filter Cartridge

    Fits 10 inch by 4.5 inch filtration system housings Learn More
    $54.99 MSRP:  $71.29
  25. 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

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