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. 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
  2. Pentek EP-20 Replacement Water Filter Cartridge

    Pentek EP-20 Water Filter Cartridge Replacements

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

    As Low As $15.50 Per Filter

  3. 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

  4. EP5-20 Tier1 Carbon Block Water Filter

    EP5-20 Tier1 Carbon Block Water Filter

    Sized 20 x 2.5 inches Learn More

    As Low As $11.04 Per Filter

  5. KX-MATRIKX-1-20 Matrikx Comparable Whole House Carbon Water Filter by Tier1

    KX-MATRIKX-1-20 Matrikx Comparable Whole House Carbon Water Filter by Tier1

    Fits filtration system housings that accepts 20 x 2.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  6. CR1-20 KX MatrikX Comparable Whole House Carbon Water Filter by Tier1

    CR1-20 KX MatrikX Comparable Whole House Carbon Water Filter by Tier1

    Fits filtration system housings that accepts 20 x 2.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  7. CHLORPLUS-20 Pentek Comparable Whole House Carbon Water Filter by Tier1

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

    Fits filtration system housings that accepts 20 x 2.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  8. FLOPLUS-20 Pentek Comparable Whole House Carbon Water Filter by Tier1

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

    Fits filtration system housings that accepts 20 x 2.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  9. CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $15.69 MSRP:  $23.99
  10. CFBC-20 Pentek Replacement Filter Cartridge

    CFBC-20 Pentek Replacement Water Filter Cartridge

    Fits into most standard water filtration system housings that accept 20-inch x 2.5-inch cartridges Learn More
    $23.49 MSRP:  $29.31
  11. FLOPLUS-20 Pentek Replacement Filter Cartridge

    FLOPLUS-20 Pentek Replacement Filter Cartridge

    Fits most housings that accept standard 20-inch x 2.5-inch water filter cartridges Learn More
    $28.99 MSRP:  $31.84
  12. KDF55-20 Tier1 Replacement Filter Cartridge

    KDF55-20 Tier1 Replacement Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $87.99 MSRP:  $93.34
  13. MATRIKX-5-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-5-20 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
    $43.99
  14. CBC-20 Pentek Replacement Filter Cartridge

    CBC-20 Pentek Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $32.77
  15. CFB-Plus20 Pentek Replacement Filter Cartridge

    CFB-Plus20 Pentek Replacement Water Filter Cartridge

    Fits into most standard water filtration system housings that accept 20-inch x 2.5-inch filter cartridges Learn More
    $17.89 MSRP:  $32.99
  16. CQE-RC-04014 Crystal Quest Carbon Block Water Filter Cartridge

    CQE-RC-04014 Crystal Quest Carbon Block Water Filter Cartridge

    Fits Crystal Quest countertop, undersink and refrigerator water filtration systems Learn More
    $39.99
  17. CB-25-2001 Hydronix Carbon Water Filter Replacement

    CB-25-2001 Hydronix Carbon Water Filter Replacement

    Sized at 20 x 2.5 inches. 1 micron. Learn More
    $18.99 MSRP:  $32.99
  18. CBC-20 Tier1 Water Filter Cartridge

    CBC-20 Tier1 Water Filter Cartridge

    Fits filtration system housings that accepts 20 x 2.5 inch cartridges Learn More
    $25.99 MSRP:  $32.77
  19. KDF85-20 Tier1 Water Filter

    KDF85-20 Tier1 Water Filter

    Sized at 20 x 2.5 inches, this filter will fit into all #20 Standard or Slimline water filtration system housings Learn More
    $102.99 MSRP:  $121.89

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