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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.

23 Item(s)

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  1. CB-25-1005 Hydronix Replacement Filter Cartridge

    CB-25-1005 Hydronix Replacement Filter Cartridge

    Fits most housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $9.99
  2. HDG-CB-AC10 Hydronix Reverse Osmosis Filter

    HDG-CB-AC10 Hydronix Reverse Osmosis Filter

    Fits Culligan Reverse Osmosis system models AC15, AC30, LC50, and H83, and others Learn More
    $7.99 Retail Price:  $9.19
  3. MATRIKX-1-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-1-HD10 KX Technologies MatrikX 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
    $40.99 Retail Price:  $51.74
  4. MATRIKX-1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $18.99
  5. MATRIKX-1-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-1-20 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
    $30.99
  6. MATRIKX-1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More
    $102.99
  7. MATRIKX-5-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-5-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
  8. 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
  9. MATRIKX-5-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-5-HD10 KX Technologies MatrikX 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
    $41.99 Retail Price:  $52.89
  10. MATRIKX-5-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-5-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More
  11. MATRIKX-CR1-10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-CR1-10 KX Technologies MatrikX 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
    $15.99 Retail Price:  $20.34
  12. 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
  13. MATRIKX-CTO2-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-CTO2-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $12.99
  14. MATRIKX-CTO2-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-CTO2-20 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
    $31.99 Retail Price:  $32.19
  15. MATRIKX-CTO2-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-CTO2-HD10 KX Technologies MatrikX 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
    $32.99
  16. MATRIKX-CTO2-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-CTO2-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More
    $70.99
  17. MATRIKX-Pb1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-Pb1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $19.99 Retail Price:  $22.34
  18. MATRIKX-Pb1-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-Pb1-20 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

    Regular Price: $37.99

    Special Price: $29.05

  19. MATRIKX-Pb1-HD10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-PB1-HD10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

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

    Regular Price: $63.99

    Special Price: $45.05

  20. MATRIKX-Pb1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-Pb1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More
    $127.99
  21. PLEKX-10-10 KX Technologies PlekX Whole House Filter Replacement Cartridge

    PLEKX-10-10 KX Technologies PlekX 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
    $13.99 Retail Price:  $15.34
  22. 01-250-125-050 KX Technologies Replacement Filter Cartridge

    01-250-125-050 KX Technologies Replacement Filter Cartridge

    Fits most standard housings that accept 5-inch filters Learn More
  23. 32-250-125-050 KX Technologies Replacement Filter Cartridge

    32-250-125-050 KX Technologies Replacement Filter Cartridge

    Fits most standard housings that accept 5-inch filters Learn More
    $10.99

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