Discount Water Filters and Air Filters at Discount Filter Store.com

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Water Filtration Systems, Filters, & Parts

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. AF-20-2015-BB Tier1 Aries Comparable KDF and Carbon Water Filter

    AF-20-2015-BB Tier1 Aries Comparable KDF and Carbon Water Filter

    Fits water filtration systems that accept 20 x 4.5 inch cartridges, including the #20 Big Blue and Big Boy housings by Pentek Learn More
    $121.99
  3. 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
  4. P10-30 Spun Wound Polypropylene Replacement Filter by Tier1 (10 micron)

    PD-10-30 Pentek Comparable Spun Wound Polypropylene Replacement Filter by Tier1 (10 micron)

    Made to fit housings sized 30 x 2.5 inches Learn More
    $13.99 MSRP:  $19.99
  5. Hydronix SDC-25-4010 Polypropylene Sediment Filter

    Hydronix SDC-25-4010 Polypropylene Sediment Filter

    Standard 40 inch by 2.5 inch size fits many standard size filter housings Learn More
    $19.99
  6. SDC-25-4010 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  7. Culligan Pre-Reverse Osmosis Carbon Block Comparable Filter by Tier1

    Culligan Pre-Reverse Osmosis Carbon Block Comparable Filter by Tier1

    Fits Culligan Aqua Cleer and H Series reverse osmosis systems, including the H-5, H-8, H-82, H-83, AC-15, AC-30 and AC-50 Learn More
    $10.99 MSRP:  $20.99
  8. CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1

    CW-F-D Culligan Comparable Whole House Sediment Water Filter by Tier1 (2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More
    $7.99 MSRP:  $12.99
  9. EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    Fits standard 20 x 2.5-inch housings Learn More
    $11.99 MSRP:  $20.99
  10. EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    Fits most standard 20 x 4.5-inch housings Learn More
    $36.99 MSRP:  $48.99
  11. AP-GRMB-10PP-20UB Whole House Replacement Cartridge by 3M Aqua-Pure

    AP-GRMB-10PP-20UB Whole House Replacement Filter by 3M Aqua-Pure

    Fits most standard 20-inch x 2.5-inch housings Learn More
  12. WFPF13003B DuPont Universal Whole House Filtration System

    WFPF13003B DuPont Universal Whole House Filtration System

    For use with DuPont WFPFC whole house filter cartridges Learn More
  13. APRC1-P AquaPatrol Ice Machine Replacement Water Filter

    APRC1-P AquaPatrol Ice Machine Replacement Water Filter

    Fits the Scotsman ADS-AP1 AquaPatrol Water Filtration System Learn More
    $58.05 MSRP:  $94.99

    Out of stock

  14. C2-02 Viqua Carbon Whole House Filter

    C2-02 Viqua Carbon Whole House Filter

    Fits most 20 x 4.5-inch filter housings including the Viqua IHS12-D4 and IHS22-D4 water disinfection systems. Learn More
    $49.99 MSRP:  $89.00
  15. EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (6-Pack)

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (6-Pack)

    Fits most standard 10-inch housings Learn More

    $96.99

  16. Pentair HEPP10-40DB Pureflex High Efficiency

    Pentair HEPP10-40DB Pureflex High Efficiency

    Fits standard filter housings that accept 40 x 2.5-inch filters Learn More
    $93.99 MSRP:  $113.99

    Out of stock

  17. Pentair HEPP10-30DB Pureflex High Efficiency Cartridge

    Pentair HEPP10-30DB Pureflex High Efficiency Cartridge

    Fits standard filter housings that accept 30 x 2.5-inch filters Learn More
    $107.99 MSRP:  $130.99

    Out of stock

  18. Pentair NEPP12-40DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP12-40DB Pureflex Pleated Polypropylene Cartridge

    Fits standard filter housings that accept 40 x 2.5-inch filters Learn More
    $49.99 MSRP:  $61.99

    Out of stock

  19. SDC-45-2010 Hydronix Water Filter Cartridge

    SDC-45-2010 Hydronix Sediment Water Filter Cartridge

    10 micron filter fits into water filtration systems that use 20-inch x 4.5-inch filter replacements Learn More

    As Low As $19.16 Per Filter

  20. EPM-20 Pentek Whole House Water Filter

    Pentek EPM-20 Whole House Water Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More

    As Low As $12.00 Per Filter

  21. EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek 20-inch Big Blue and other heavy-duty filter housings Learn More

    As Low As $43.66 Per Filter

  22. Pentek EPM-BB Replacement Water Filter Cartridge

    Pentek EPM-BB Water Filter Cartridge Replacement

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

    As Low As $23.00 Per Filter

  23. Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More

    As Low As $13.00 Per Filter

  24. NCP-20BB Pentek Whole House Filter Replacement

    NCP-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek Big Blue and most standard 20-inch heavy duty housings that use 20-inch x 4 1/2-inch replacement filter cartridges Learn More

    As Low As $33.33 Per Filter

  25. NCP-BB Pentek Whole House Water Filter

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