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. F-201R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)

    InSinkErator F-201R Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)

    Fits the InSinkErator F-201 Water Filtration System, and all Series 1100 and 2200 Instant Hot Water Dispensers Learn More
    $67.99 MSRP:  $70.00
  2. F-601R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)

    InSinkErator F-601R Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)

    Fits the InSinkErator F-201 Water Filtration System, and all Series 1100 and 2200 Instant Hot Water Dispensers Learn More
    $130.99 MSRP:  $134.42
  3. Everpure H-54 Water Filter Replacement Cartridge (EV9730-06)
  4. 3M Aqua-Pure APDWS1000 Undersink Water Filter System

    APDWS1000 Undersink Water Filter System by 3M Aqua-Pure

    Fits most standard water lines Learn More
    $406.99 MSRP:  $547.99
  5. WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge

    WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge

    Fits WFDW120009W DuPont Universal Drinking Water Filter System and other brands of 10-inch standard-size filter systems Learn More
    $33.99 MSRP:  $45.85
  6. CB6 Multipure Aquaversa Comparable Water Filter: HDG-CB6-14 HydroGuard

    CB6 Comparable Water Filter: HDG-CB6-14 HydroGuard

    Fits water filtration systems that use the CB6 Multpure Aquaversa replacement filter Learn More
    $30.89 MSRP:  $45.99
  7. P-250 Pentek Comparable Under Sink Water Filter Set Tier1

    P-250 Pentek Comparable Under Sink Water Filter Set by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More
    $21.99 MSRP:  $41.99
  8. D-250A Culligan Comparable Under Sink Water Filter Set by Tier1

    D-250A Culligan Comparable Under Sink Water Filter Set by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More

    As Low As $0.00 Per Filter

  9. P-250 Pentek Comparable Under Sink Water Filter Set by Tier1

    P-250 Pentek Comparable Under Sink Water Filter Set by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More

    As Low As $0.00 Per Filter

  10. P-250A Pentek Comparable Under Sink Filter Set by Tier1

    P-250A Pentek Comparable Under Sink Filter Set by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More

    As Low As $0.00 Per Filter

  11. WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1

    WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More

    As Low As $0.00 Per Filter

  12. WHKF-DB2 Whirlpool Comparable Under Sink Water Filter by Tier1

    WHKF-DB2 Whirlpool Comparable Under Sink Water Filter by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More

    As Low As $0.00 Per Filter

  13. W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge

    W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge

    Fits Doulton HIP, HIS and HCPS housings (NOT gravity-fed) Learn More
    $54.59 MSRP:  $73.99
  14. 600R American Plumber Undersink Filter Replacement Cartridge

    600R American Plumber Undersink Water Filter Cartridge

    Built to fit into American Plumber WIC-600 and DW-600 undersink water filtration systems Learn More
    $31.99 MSRP:  $35.06
  15. WIC-600 American Plumber Undersink Filter System

    WIC-600 American Plumber Undersink Filter System

    Fits any 1/4-inch water line Learn More
    $55.99 MSRP:  $58.34
  16. AP-DW80/90 3M Aqua-Pure Water Filter Set

    AP-DW80/90 3M Aqua-Pure Pre and Post Filter Set

    Fits 3M Aqua-Pure water filter systems Learn More
    $116.99 MSRP:  $173.90
  17. C-COMPLETE 3M Aqua-Pure Undersink Water Filter

    C-COMPLETE 3M Aqua-Pure Undersink Water Filter Cartridge

    Fits the 3M Aqua-Pure Easy Complete Drinking Water Filtration System Learn More
    $69.09 MSRP:  $92.99
  18. 1000R-D Culligan Level 3 Undersink RV and Marine Icemaker and Drinking Water Filter

    1000R-D Culligan Level 3 Undersink RV and Marine Icemaker and Drinking Water Filter

    Fits Culligan SY1000, SY-1000s, IC-1000, RV-1000, SY-750s, IC-750, and RV-750 filter systems Learn More
    $29.79 MSRP:  $43.99
  19. D-250A Culligan Undersink Filter Replacement Cartridge Set

    D-250A Culligan Undersink Filter Replacement Cartridge Set

    Fits the Culligan SY-2300, SY-2300S and SY-2650 systems and any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $31.99 MSRP:  $46.99
  20. D-40 Culligan Level 4 Undersink Water Filter Replacement Cartridge

    D-40 Culligan Level 4 Undersink Water Filter Replacement Cartridge

    Fits Culligan US-550, US-600, US-600A, and any brand of water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $34.99 MSRP:  $50.99
  21. RC-EZ-3 Culligan Level 3 Easy-Change Inline Filter Replacement Cartridge

    RC-EZ-3 Culligan Level 3 Easy-Change Inline Filter Replacement Cartridge

    Fits Culligan Easy-Change filter systems including IC-EZ-3, US-EZ-3, and RV-EZ-3 Learn More
    $24.99 MSRP:  $31.04
  22. RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    Fits Culligan Easy-Change filter systems including IC-EZ-4, US-EZ-4, and RV-EZ-4 Learn More
    $45.19 MSRP:  $78.99
  23. SY-1000 Culligan Water Filtration System

    SY-1000 Culligan Water Filtration System

    Fits standard 1/4-inch water lines Learn More
  24. US-EZ-3 Culligan Level 3 Easy-Change Undersink Filter System
  25. US-EZ-4 Culligan Level 4 Easy-Change Undersink Filter System

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