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. AF-20-3690-BB Aries Replacement Whole House Fluoride Removal Filter

    AF-20-3690-BB Aries Whole House Fluoride Removal Filter

    Fits most housings that accept 20 inch x 4.5 filter cartridges Learn More
    $126.05 MSRP:  $171.99
  2. RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  3. PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  4. AF-10-2010 Aries GAC/KDF Water Filter Cartridge

    AF-10-2010 Aries GAC/KDF Water Filter Cartridge

    Fits standard 10 x 2.5 inch residential and industrial housings Learn More
    $16.99 MSRP:  $22.99
  5. AF-10-1053 Aries Specialty Cartridge Hydrogen Sulfide Removal

    AF-10-1053 Aries Specialty Cartridge 10-inch x 2.5-inch Hydrogen Sulfide Removal

    Fits standard 10 x 2.5-inch filter housings Learn More
    $18.99 MSRP:  $22.99
  6. AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC

    AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC

    Fits standard 10 x 2.5-inch filter housings Learn More
    $31.99
  7. RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    Fits standard slim 10 x 2.5-inch water filter housings Learn More
    $23.99 MSRP:  $27.99
  8. Aries AF-10-2115 KDF/Granular Activated Carbon

    Aries AF-10-2115 KDF/Granular Activated Carbon

    Fits systems that take 10 x 2-1/2 inch replacements Learn More
    $39.99 MSRP:  $49.00
  9. DGD-7525-20 Pentek Whole House Water Filter

    DGD-7525-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    As Low As $21.00 Per Filter

  10. DGD-7525 Pentek Whole House Sediment Filter

    Pentek DGD-7525 Whole House Sediment Water Filter Cartridge Replacement

    Fits most housings that accept 10-inch x 4.5-inch water filter cartridges Learn More

    As Low As $12.00 Per Filter

  11. Pentek WP25BB97P Whole House Water Filter Replacement Cartridge

    WP25BB97P Pentek Whole House Filter Replacement Cartridge

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

    As Low As $17.00 Per Filter

  12. Pentek WPX25BB97P Whole House Water Filter Replacement Cartridge

    WPX25BB97P Pentek Whole House Filter Replacement Cartridge

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

    As Low As $18.83 Per Filter

  13. FXHTC GE Comparable Whole House Radial Flow Carbon Water Filter by Tier1

    FXHTC GE Comparable Whole House Radial Flow Carbon Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

  14. WRC25HD American Plumber Comparable Whole House Carbon Water Filter by Tier1

    WRC25HD American Plumber Comparable Whole House Radial Flow Carbon Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

  15. W25P American Plumber Comparable Whole House Sediment Water Filter by Tier1
  16. The WGCHD American Plumber Comparable Whole House Radial Flow Carbon Water Filter by Tier1

    WGCHD American Plumber Comparable Whole House Radial Flow Carbon Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

  17. AP-GRMB-20PP-10UB Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  18. SDC-25-1020 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  19. GX20-9-78 Hytrex Comparable Whole House Sediment Water Filter by Tier1
  20. P25 Pentek Comparable Whole House Sediment Filter by Tier1
  21. PS20-10C Pentek Comparable Whole House Sediment Water Filter by Tier1
  22. PX20-9-78 Purtrex Comparable Whole House Sediment Water Filter by Tier1
  23. AP817 3M Aqua-Pure Comparable Whole House Carbon Water Filter by Tier 1

    AP817 3M Aqua-Pure Comparable Whole House Carbon Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

  24. RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1

    RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

  25. RFC-BB Pentek Comparable Whole House Carbon Water Filter by Tier1

    RFC-BB Pentek Comparable Whole House Carbon Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

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