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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.

Items 1 to 25 of 26 total

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  1. PS1-20C Pentek Sediment Water Filter

    PS1-20C Pentek Sediment Water Filter

    Fits standard filter housings using 20 x 2.5-inch filters Learn More
    $8.99 Retail Price:  $13.55
  2. C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1

    C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1

    Fits most standard 20 x 2.5-inch housings Learn More
  3. C1-20 Pentek Comparable Whole House Water Filter by Tier1 (2-Pack)

    C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1 (2-Pack)

    Fits most standard 20 x 2.5-inch housings Learn More

    $28.99

  4. C1-20 Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)

    C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1 (4-Pack)

    Fits most standard 20 x 2.5-inch housings Learn More

    $54.99

  5. Pentair NEPP12-20DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP12-20DB Pureflex Pleated Polypropylene Cartridge

    Fits standard filter housings that accept 20 x 2.5-inch filters Learn More
    $77.99 Retail Price:  $94.99
  6. Pentair NEPP2-20DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP2-20DB Pureflex Pleated Polypropylene Cartridge

    Fits standard filter housings that accept 20 x 2.5-inch filters Learn More
    $62.99 Retail Price:  $77.99
  7. ECP5-20 Pentek Replacement Filter Cartridge (20-Pack)

    ECP5-20 Pentek Replacement Filter Cartridge (20-Pack)

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More

    $224.99

  8. ECP5-20 Pentek Replacement Filter Cartridge (6-Pack)

    ECP5-20 Pentek Replacement Filter Cartridge (6-Pack)

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More

    $76.99

  9. Pentek ECP20-20 Replacement Water Filter Cartridge

    ECP20-20 Pentek Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More

    As Low As $11.25 Per Filter

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

    NCP-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 $13.00 Per Filter

  11. Pentek P1-20 Whole House Water Filter Replacement Cartridge

    P1-20 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 $9.75 Per Filter

  12. P5-20 Tier1 Sediment Water Filter

    P5-20 Tier1 Whole House Sediment Water Filter

    Sized 20 x 2.5 inches Learn More

    As Low As $6.00 Per Filter

  13. 3M Aqua-Pure AP111-2 Whole House Water Filter

    AP111-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
  14. PD-1-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-1-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $11.72
  15. PD-10-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-10-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $12.99 Retail Price:  $15.34
  16. PD-25-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-25-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $12.99
  17. PD-5-20 Pentek Whole House Filter Replacement Cartridge

    PD-5-20 Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More
    $10.99 Retail Price:  $12.98
  18. PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $12.98
  19. PS20-20C Pentek Whole House Replacement Sediment Filter Cartridge

    PS20-20C Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $13.34
  20. PS5-20C Pentek Whole House Replacement Sediment Filter Cartridge

    PS5-20C Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $9.99 Retail Price:  $10.57
  21. FPMB20-20 Watts Flo-Pro Whole House Replacement Filter Cartridge

    FPMB20-20 Watts Flo-Pro Whole House Water Filter Cartridge

    Fits water filtration system housing that accept a 20-inch x 2.5-inch filter Learn More
    $9.99 Retail Price:  $12.34
  22. FPMB5-20 Watts Flo-Pro Replacement Filter Cartridge

    FPMB5-20 Watts Flo-Pro Water Filter Cartridge

    Fits water filtration system housing that accept a 20-inch x 2 1/2-inch filter Learn More
    $5.99 Retail Price:  $6.89
  23. MATRIKX-CR1-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-CR1-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More
    $34.99 Retail Price:  $36.34
  24. C1-20 Pentek Replacement Filter Cartridge

    C1-20 Pentek Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $17.99 Retail Price:  $20.34
  25. SDC-25-2001 Hydronix Sediment Water Filter Cartridge

    SDC-25-2001 Hydronix Sediment Water Filter Cartridge

    2.5 inches by 20 inches, fits systems that use Liquatec SDF-25-2001, Pentek 155304-43, Pentek P1-20 and Watts FPMB1-20 water filters Learn More
    $7.99 Retail Price:  $8.04

Items 1 to 25 of 26 total

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