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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. 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. 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
    $14.99 Retail Price:  $17.34
  3. CB-45-2010 Hydronix Replacement Filter Cartridge

    CB-45-2010 Hydronix Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $36.99 Retail Price:  $49.44
  4. 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
  5. HDG-SED-ACS Hydronix Replacement Filter Cartridge

    HDG-SED-ACS Hydronix Replacement Filter Cartridge

    Fits Culligan Reverse Osmosis system models AC15, AC30, LC50, and H83, and others Learn More
    $6.99 Retail Price:  $8.04
  6. ICF-10 Hydronix Inline Coconut Carbon Filter

    ICF-10 Hydronix Inline Coconut Carbon Filter

    $7.99 Retail Price:  $9.19
  7. ICF-10Q Hydronix Inline Coconut Carbon Filter

    ICF-10Q Hydronix Inline Coconut Carbon Filter

    $6.99 Retail Price:  $10.34
  8. ICF-10Q38 Hydronix Inline Coconut Carbon Filter
  9. ICF-2512 Hydronix Inline Coconut Carbon Filter

    ICF-2512 Hydronix Inline Coconut Carbon Filter

    $23.99 Retail Price:  $26.34
  10. ICF-6 Hydronix Inline Coconut Carbon Filter

    ICF-6 Hydronix Inline Coconut Carbon Filter

    $5.99 Retail Price:  $9.19
  11. ICF-6Q Hydronix Inline Coconut Carbon Filter

    ICF-6Q Hydronix Inline Coconut Carbon Filter

    $6.99 Retail Price:  $10.34
  12. ISF-10 Hydronix Sediment Inline Filter

    ISF-10 Hydronix Sediment Inline Filter

    $6.99 Retail Price:  $10.34
  13. ISF-2512 Hydronix Sediment Inline Filter

    ISF-2512 Hydronix Sediment Inline Filter

    $8.99 Retail Price:  $12.64
  14. SDC-25-1005 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-25-1005 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $6.99 Retail Price:  $9.34
  15. SDC-25-1020 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-25-1020 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $5.99
  16. SDC-25-2005 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-25-2005 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $7.99 Retail Price:  $8.27
  17. SDC-25-2010 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-25-2010 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $9.99 Retail Price:  $12.34
  18. SDC-25-2020 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-25-2020 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $8.99 Retail Price:  $11.34
  19. SDC-25-3005 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-25-3005 Hydronix Whole House Sediment Filter Cartridge

    Fits most filtration system housings that accept 30-inch x 2.5-inch water filter cartridges Learn More
    $12.99
  20. SDC-45-1001 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-45-1001 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $14.99 Retail Price:  $17.34
  21. SDC-45-1005 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-45-1005 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $14.99 Retail Price:  $17.34
  22. SDC-45-1010 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-45-1010 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $15.99 Retail Price:  $18.34
  23. SDC-45-2050 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-45-2050 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $21.99 Retail Price:  $27.59
  24. SPC-45-2005 Hydronix Whole House Replacement Sediment Filter Cartridge

    SPC-45-2005 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $22.99 Retail Price:  $29.89
  25. S1-BB Pentek Replacement Filter Cartridge

    S1-BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $15.99 Retail Price:  $18.34

Items 1 to 25 of 142 total

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