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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. AF-20-3690-BB Aries Replacement Whole House Fluoride Removal Filter

    AF-20-3690-BB Aries Whole House Fluoride Removal Filter

    Fits most housings that accept 20 inch x 4.5 filter cartridges Learn More
    $136.99 Retail Price:  $171.99
  2. RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  3. PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  4. AF-10-2010 Aries GAC/KDF Water Filter Cartridge

    AF-10-2010 Aries GAC/KDF Water Filter Cartridge

    Fits standard 10 x 2.5 inch residential and industrial housings Learn More
    $16.99 Retail Price:  $22.99
  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 Retail Price:  $27.99
  6. DGD-7525 Pentek Whole House Replacement Sediment Filter (12-Pack)

    DGD-7525 Pentek Whole House Replacement Sediment Filter Cartridge (12-Pack)

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

    $153.99

  7. DGD-7525-20 Pentek Whole House Replacement Sediment Filter (6-Pack)

    DGD-7525-20 Pentek Whole House Replacement Sediment Filter Cartridge (6-Pack)

    Fits most housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    $122.99

  8. DGD-7525 Pentek Whole House Replacement Sediment Filter (20-Pack)

    DGD-7525 Pentek Whole House Replacement Sediment Filter Cartridge (20-Pack)

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

    $239.99

  9. DGD-7525 Pentek Whole House Replacement Sediment Filter (6-Pack)

    DGD-7525 Pentek Whole House Replacement Sediment Filter Cartridge (6-Pack)

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

    $81.99

  10. DGD-7525-20 Pentek Whole House Water Filter

    DGD-7525-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    As Low As $20.50 Per Filter

  11. DGD-7525 Pentek Whole House Sediment Filter

    DGD-7525 Pentek Whole House Replacement Sediment Filter Cartridge

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

    As Low As $12.00 Per Filter

  12. Harmsco PO-25-G1PS-EA Polypropylene Filter Bag

    Harmsco PO-25-G1PS-EA Polypropylene Filter Bag

    Fits the Harmsco BCB-1-1.5-EXT extended area filter bag housing Learn More
    $18.99 Retail Price:  $21.34
  13. Hydronix SDC-25-3025 Polypropylene Sediment Filter

    Hydronix SDC-25-3025 Polypropylene Sediment Filter

    Standard 30 inch by 2.5 inch size and double open end design fits many common filter housings. Also available in a variety of micron ratings and end cap styles. Learn More
    $9.99 Retail Price:  $10.91
  14. Hydronix SDC-25-4025 Polypropylene Sediment Filter

    Hydronix SDC-25-4025 Polypropylene Sediment Filter

    Standard 40 inch by 2.5 inch size fits many standard size filter housings Learn More
    $12.99 Retail Price:  $14.34
  15. Pentek BPHE-410-25 Polypropylene High Efficiency Filter Bag

    Pentek BPHE-410-25 Polypropylene High Efficiency Filter Bag

    Fits the Pentek PBH-410 series filter bag housing Learn More
    $4.99 Retail Price:  $6.08
  16. Pentek PO25G4S Polypropylene Filter Bag

    Pentek PO25G4S Polypropylene Filter Bag

    Standard #4 size with 4 inch diameter by 7 inch length fits many familiar bag filter housings Learn More
    $5.99 Retail Price:  $8.34
  17. W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $13.99 Retail Price:  $16.34
  18. WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge

    WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge

    Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings Learn More
    $36.99 Retail Price:  $40.24
  19. WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    Fits American Plumber W2010-PR and W2015-PR and most other heavy duty water filter housings Learn More
    $71.99 Retail Price:  $78.19
  20. AP111 3M Aqua-Pure Whole House Filter Replacement Cartridge

    AP111 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
  21. 3M Aqua-Pure AP111-2 Whole House Water Filter

    AP111-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
  22. 3M Aqua-Pure AP811 Whole House Water Filter Cartridge

    AP811 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $37.99 Retail Price:  $43.69
  23. 3M Aqua-Pure AP811-2 Whole House Water Filter

    AP811-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
    $60.99 Retail Price:  $66.69
  24. 3M Aqua-Pure AP817 Whole House Water Filter Cartridge

    AP817 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $49.99
  25. 3M Aqua-Pure AP817-2 Whole House Water Filter Cartridge

    AP817-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
    $88.99 Retail Price:  $112.69

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