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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. P5-10 Tier1 Sediment Water Filter (4-pack)

    P5-10 Tier1 Sediment Water Filter (4-pack)

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

    $17.99

  2. P5-20BB Tier1 Whole House Sediment Water Filter (2-Pack)

    P5-20BB Tier1 Whole House Sediment Water Filter (2-Pack)

    Fits filtration system housings that accept 20 x 4.5 inch cartridges Learn More

    $25.49

  3. P5-10 Tier1 Sediment Water Filter

    P5-10 Tier1 Sediment Water Filter

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

    As Low As $3.00 Per Filter

  4. 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 $4.50 Per Filter

  5. P5-20BB Tier1 Sediment Water Filter

    P5-20BB Tier1 Whole House Sediment Water Filter

    Fits filtration system housings that accept 20 x 4.5 inch cartridges Learn More

    As Low As $11.00 Per Filter

  6. Pentek WP5BB97P Replacement Water Filter Cartridge

    WP5BB97P Pentek Replacement Filter Cartridge

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

    As Low As $17.50 Per Filter

  7. Pentek S1-BB Replacement Water Filter Cartridge

    Pentek S1-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 $5.40 Per Filter

  8. 4373529 Whirlpool Undersink Filter Replacement Cartridge

    4373529 Whirlpool Undersink Filter Replacement Cartridge

    Fits Whirlpool WSC100 filter system Learn More
    $43.99 MSRP:  $50.59
  9. 4373574 Whirlpool Undersink Filter Kit

    4373574 Whirlpool Undersink Filter Kit

    Fits Whirlpool WSC300 and WSC200 filter systems Learn More
  10. 4373575 Whirlpool Undersink Filter Kit

    4373575 Whirlpool Undersink Filter Kit

    Fits Whirlpool WSR413 and WSC200YW filter systems Learn More
    $59.99 MSRP:  $74.74
  11. WP-5BB97P Pentek Replacement Filter Cartridge

    WP-5BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $18.99
  12. WP1BB97P Pentek Replacement Filter Cartridge

    WP1BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $17.99
  13. WPX100BB97P Pentek Replacement Filter Cartridge

    WPX100BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $18.99 MSRP:  $24.14
  14. WPX50BB97P Pentek Replacement Filter Cartridge

    WPX50BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $19.99 MSRP:  $24.14
  15. WATER-FACTORY-SYSTEMS-47-55707G2

    WATER-FACTORY-SYSTEMS-47-55707G2

    $34.99 MSRP:  $73.99
  16. WATER-FACTORY-SYSTEMS-47-55711G2

    WATER-FACTORY-SYSTEMS-47-55711G2

    $40.99 MSRP:  $52.89
  17. WHIRLPOOL-WHAB-6009

    WHIRLPOOL-WHAB-6009

    $36.99 MSRP:  $77.99
  18. Whirlpool WHAB-6010 Replacement Unit B Filter Cartridge
  19. WHIRLPOOL-WHKF-DB1
  20. WHIRLPOOL-WHKF-DB2
  21. WHKF-DWHBB Whirlpool Filter Housing with Pressure Relief Valve - Clear
  22. WHIRLPOOL-WHKF-GAC
  23. WHKF-IMPLUS Whirlpool Inline Filter System
  24. WHIRLPOOL-WHKF-IMTO

    WHIRLPOOL-WHKF-IMTO

    $11.99 MSRP:  $14.94
  25. WHIRLPOOL-WHKF-WHPL

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