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. CFBC-10 Pentek Whole House Carbon Block Water Filter

    CFBC-10 Pentek Whole House Carbon Block Water Filter

    Fits in housings that accept 10 x 2-1/2 inch replacement filters Learn More
    $13.99
  2. Pentek 255579-43 Inline Sediment Water Filter Replacement

    Pentek 255579-43 Inline Sediment Water Filter Replacement

    Fits directly into 1/4-inch copper or plastic water lines Learn More
    $14.29 MSRP:  $21.99
  3. CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    Fits most standard 10-inch x 2.5-inch housings Learn More
    $15.39 MSRP:  $23.99
  4. 255541-43 Pentek Inline Water Filter Replacement
  5. RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    Fits standard slim 10 x 2.5-inch water filter housings Learn More
    $23.99 MSRP:  $27.99
  6. 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

  7. 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 $8.46 Per Filter

  8. EP-10 Pentek Comparable Carbon Block Water Filter by Tier1

    EP-10 Pentek Comparable Carbon Block Water Filter by Tier1

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

    As Low As $7.50 Per Filter

  9. Pentek WS-10 Water Softening Water Filter

    Pentek WS-10 Water Softening Filter

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

    As Low As $19.66 Per Filter

  10. 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

  11. TS-101L Pentek Comparable Granular Activated Carbon Inline Water Filter by Tier1

    TS-101L Pentek Comparable Granular Activated Carbon Inline Water Filter by Tier1

    Fits standard 1/4-inch water lines Learn More

    As Low As $0.00 Per Filter

  12. IC-101L Pentek Comparable Granular Activated Carbon Inline Water Filter by Tier1
  13. RFC-93 Whole House Filter Replacement Cartridge by Tier1

    RFC-93 Whole House Filter Replacement Cartridge by Tier1

    Fits most 10x2.5 housings Learn More
    $17.99
  14. Pentek QC10-CB1R Carbon Block Quick Change Filter

    Pentek QC10-CB1R Carbon Block Quick Change Filter

    Proprietary design fits Pentek QC systems exclusively Learn More
  15. GAC-5 Pentek Replacement Filter Cartridge

    GAC-5 Pentek Replacement Filter Cartridge

    Fits most housings that accept standard 5-inch x 2.5-inch water filter cartridges Learn More
    $14.99
  16. GS-6RO-B Pentek Inline Filter Replacement Cartridge

    GS-6RO-B Pentek Inline Water Filter Cartridge

    Fits 1/4-inch water lines with 1/4-inch MPT Learn More
  17. IC-101L Pentek Inline Filter

    IC-101L Pentek Inline Filter

    Fits standard 1/4-inch water lines Learn More
    $12.99
  18. P-250 Pentek Undersink Filter Set

    P-250 Pentek Undersink Filter Set

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More
    $33.99 MSRP:  $44.99
  19. P-250A Pentek Undersink Filter Set

    P-250A Pentek Undersink Filter Set

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More
    $33.99
  20. QC10-CB1 Pentek Undersink Quick-Change Filter System
  21. QC10-CBR-JG14 Pentek Undersink Quick-Change Filter System
  22. QC10-CBR-THREADED Pentek Undersink Quick-Change Filter System
  23. QC10-CBRR Pentek Undersink Quick-Change Replacement Filter Cartridge

    QC10-CBRR Pentek Undersink Quick-Change Replacement Filter Cartridge

    Fits any Pentek Quick-Change Series filter heads Learn More
    $22.99 MSRP:  $36.79
  24. QC10-EP Pentek Undersink Quick-Change Filter System
  25. QC10-EPR Pentek Undersink Quick-Change Replacement Filter Cartridge

    QC10-EPR Pentek Quick-Change Replacement Water Filter Cartridge

    Fits any Pentek Quick-Change Series water filtration system heads Learn More
    $24.69 MSRP:  $34.99

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