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. 22110 Hydrologic SmallBoy Replacement Carbon Filter - Green

    22110 Hydrologic SmallBoy Carbon Filter (Green)

    Fits filtration system housings that use 10 inch by 2.5 inch filter Learn More
    $18.99
  2. 36005 Hydrologic SmallBoy De-Chlorinator and Sediment Filter System With Upgraded KDF
  3. 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
  4. AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    Fits standard number 10, slim-line number 10, and other filter housings using 10 x 2.5-inch filters Learn More
    $36.99 MSRP:  $56.39
  5. TIER1-GAC-10 Pentek Undersink Replacement Cartridge by Tier1

    TIER1-GAC-10 Pentek Undersink Replacement Cartridge by Tier1

    Fits standard 9 3/4-inch x 2 1/2-inch replacement filter cartridges. Learn More
    $12.99
  6. FRSS-1.5 Sterilight 1.5 GPM 1/2-inch Flow Restrictor
  7. HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    Fits most standard 10-inch filter housings. Learn More
    $13.99 MSRP:  $19.99
  8. FRSS-1.5 Viqua 1.5 GPM 1/2-inch Flow Restrictor

    FRSS-1.5 Viqua 1.5 GPM 1/2-inch Flow Restrictor

    1/2 x 1/2 inch FNPT fitting Learn More
    $52.99 MSRP:  $90.00
  9. Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge

    Pentek ChlorPlus-10 Whole House Carbon Block Water Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More

    As Low As $18.00 Per Filter

  10. Pentek EP-10 Replacement Water Filter Cartridge

    Pentek EP-10 Filter Cartridge Replacement

    Fits most housings that accept standard 10-inch x 2.5-inch water filter cartridges Learn More

    As Low As $7.80 Per Filter

  11. EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    Fits into most industry standard 10-inch water filtration system housings Learn More

    As Low As $7.50 Per Filter

  12. CBC-10 Pentek Replacement Water Filter

    Pentek CBC-10 Water Filter Replacement Cartridge

    Fits most housings that accept 10-inch x 2.5-inch water filter cartridges Learn More

    As Low As $15.00 Per Filter

  13. D-15 Culligan Whole Comparable House Carbon Water Filter by Tier1

    D-15 Culligan Whole Comparable House Carbon Water Filter by Tier1

    Fits into most industry standard 10-inch water filtration system housings Learn More

    As Low As $0.00 Per Filter

  14. Pentek CFB-PB10 Lead & Cyst Carbon Filter

    Pentek CFB-PB10 Lead & Cyst Carbon Filter

    Perfect for well water applications with the potential for microorganisms Learn More
    $13.99 MSRP:  $17.12
  15. Pentek SCBC-10 Silvered Carbon Block

    Pentek SCBC-10 Silvered Carbon Block

    Standard 10 inch by 2.5 inch size fits many under sink filter housings Learn More
    $22.99 MSRP:  $24.71
  16. W5CIP478 American Plumber Undersink Compact Filter Replacement Cartridge (2-Pack)

    W5CIP478 American Plumber Undersink Compact Filter Replacement Cartridge (2-Pack)

    Fits American Plumber W385-PR Learn More
    $16.99 MSRP:  $17.24
  17. WCC American Plumber Undersink Filter Replacement Cartridge

    WCC American Plumber Undersink Filter Replacement Cartridge

    Fits American Plumber W38-PR and most standard size water filter housings Learn More
    $19.99 MSRP:  $26.44
  18. WGC478 American Plumber Undersink Compact Filter Replacement Cartridge

    WGC478 American Plumber Undersink Compact Filter Replacement Cartridge

    Fits American Plumber WGC478 Learn More
    $13.99 MSRP:  $14.94
  19. WICSA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings

    WICSA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings

    Fits any 1/4-inch water line Learn More
    $15.39 MSRP:  $20.00
  20. CB1 OmniFilter Undersink Filter Replacement Cartridge

    CB1-SS6-S06 OmniFilter Undersink Water Filter Cartridge

    For use in any brand of undersink water filtration systems that use 9 3/4-inch x 2 1/2-inch water filter cartridges Learn More
    $34.99 MSRP:  $47.99
  21. NCP-10 Culligan Whole House Filter Replacement Cartridge

    NCP-10 Culligan 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
  22. RV-500A Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    RV-500A Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    Fits a standard 3/4-inch garden hose Learn More
  23. RV-600A Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    RV-600A Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    Fits a standard 3/4-inch garden hose Learn More
  24. RV-700 Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    RV-700 Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    Fits a standard 3/4-inch garden hose Learn More
    $20.99 MSRP:  $35.64
  25. RV-800 Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    RV-800 Culligan Level 1 Inline RV Pre-Tank Exterior Filter

    Fits a standard 3/4-inch garden hose Learn More
    $29.79 MSRP:  $39.99

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