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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. ECP5-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    ECP5-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More
    $16.99
  2. 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1

    155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $4.99
  3. AP110 Aquapure Comparable Whole House Sediment Water Filter by Tier1

    AP110 Aquapure Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $8.99 Retail Price:  $14.99
  4. FXUSC GE Comparable Whole House Sediment Water Filter 2-Pack by Tier1

    FXUSC GE Comparable Whole House Sediment Water Filter by Tier1 (2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More
    $9.99 Retail Price:  $12.34
  5. AP810 Aquapure Comparable Whole House Sediment Water Filter by Tier1

    AP810 Aquapure Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More
    $19.99
  6. CP5-BBS-D Culligan Comparable Whole House Water Filter by Tier1

    CP5-BBS-D Culligan Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More
    $14.99 Retail Price:  $21.99
  7. CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  8. CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1

    CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $5.99 Retail Price:  $9.99
  9. CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1

    CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $5.99 Retail Price:  $9.99
  10. R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More
    $14.99 Retail Price:  $17.34
  11. RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  12. S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  13. CHLORPLUS-10 Pentek Whole House Filter Replacement Cartridge (12-Pack)

    CHLORPLUS-10 Pentek Whole House Filter Replacement Cartridge (12-Pack)

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

    $215.99

  14. CW-MF Pentek Whole House Filter Replacement Cartridge (30-Pack)

    CW-MF Pentek Whole House Filter Replacement Cartridge (30-Pack)

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

    $167.99

  15. CW-MF Pentek Whole House Filter Replacement Cartridge (6-Pack)

    CW-MF Pentek Whole House Filter Replacement Cartridge (6-Pack)

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

    $40.99

  16. ECP5-BB Pentek Whole House Filter Replacement Cartridge (12-Pack)

    ECP5-BB Pentek Whole House Filter Replacement Cartridge (12-Pack)

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

    $169.99

  17. ECP5-BB Pentek Whole House Filter Replacement Cartridge (20-Pack)

    ECP5-BB Pentek Whole House Filter Replacement Cartridge (20-Pack)

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

    $254.99

  18. Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge

    CHLORPLUS-10 Pentek Whole House 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

  19. Pentek CW-MF Whole House Water Filter Replacement Cartridge

    CW-MF Pentek Whole House 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 $5.60 Per Filter

  20. ECP5-BB Pentek Whole House Water Filter

    ECP5-BB Pentek Whole House Filter Replacement Cartridge

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

    As Low As $12.75 Per Filter

  21. Pentek ECP50-BB Whole House Water Filter Replacement Cartridge

    ECP50-BB Pentek Whole House Filter Replacement Cartridge

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

    As Low As $19.67 Per Filter

  22. EPM-20 Pentek Whole House Water Filter

    EPM-20 Pentek Whole House Filter Replacement Cartridge

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

    As Low As $12.75 Per Filter

  23. W20CLA American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W20CLA American Plumber Whole House Sediment Water Filter Cartridge (2-Pack)

    Built to fit into American Plumber W34-PR, WC34-PR and WVC34 whole house water filtration systems, in addition to most standard size water filtration system housings Learn More
    $12.99 Retail Price:  $15.34
  24. W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $13.99 Retail Price:  $16.34
  25. W30PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W30PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $17.99 Retail Price:  $18.04

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