Discount Water Filters and Air Filters at Discount Filter Store.com

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Water Filtration Systems, Filters, & Parts

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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Items 1 to 25 of 31 total

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  1. P5-20 Pentek Comparable Whole House Sediment Water Filter by Tier1

    P5-20 Pentek Comparable Whole House Sediment Water Filter by Tier1

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

    As Low As $4.50 Per Filter

  2. S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1

    S1A-D Culligan Comparable Whole House Sediment Water Filter by Tier1(2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More
    $5.99 MSRP:  $12.99
  3. RS1SS OmniFilter Comparable Whole House Water Filter by Tier1

    RS1SS OmniFilter Comparable Whole House Water Filter by Tier1

    Fits OmniFilter RS1-SS and GE FXWPC Learn More
  4. P5-30 30 X 2.5 Spun Wound Polypropylene Replacement Filter by Tier1 (5 micron)

    P5-30 30 X 2.5 Spun Wound Polypropylene Replacement Filter by Tier1 (5 micron)

    Fits most filtration system housings that accept 30-inch x 2.5-inch water filter cartridges Learn More
    $6.95
  5. W20CLA American Plumber Comparable Whole House Water Filter by Tier1

    W20CLA American Plumber Comparable Whole House Water Filter by Tier1 (2-Pack)

    Standard 10 inch by 2.5 inch size fits many standard size filter housings Learn More
  6. Pentek CW-MF Whole House Water Filter Replacement Cartridge

    CW-MF Pentek 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

    As Low As $4.83 Per Filter

  7. S1 Pentek Comparable Whole House Water Filter by Tier1

    S1 Pentek Comparable Whole House Water Filter by Tier1

    Fits PENTEK-S1 and GE FXWPC Learn More

    As Low As $6.83 Per Filter

  8. Pentek S1 Pleated Whole House Sediment Filter

    Pentek S1 Sediment Whole House Water Filter Cartridge Replacement

    Fits any standard water filtration system housing that uses 9 3/4-inch x 2 1/2-inch cartridges Learn More

    As Low As $7.00 Per Filter

  9. 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
    $8.99 MSRP:  $10.91
  10. Pentek PD-10-20 Comparable Sediment Water Filter by Tier1

    Pentek PD-10-20 Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More

    As Low As $5.84 Per Filter

  11. SPC-25-2005 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    SPC-25-2005 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    20 inches by 2.5 inches, 5 micron. Fits into systems that use Liquatec SPF-25-2005, Pentek 255486-43 and Watts FM-5-20 water filters Learn More
    $9.99 MSRP:  $20.99
  12. SPC-25-2020 Hydronic Comparable Pleated Sediment Water Filter by Tier1

    SPC-25-2020 Hydronic Comparable Pleated Sediment Water Filter by Tier1

    20 inches by 2.5 inches, 20 micron. Fits into systems that use Liquatec SPF-25-2020, Pentek 255487-43 and Watts FM-20-20 water filters Learn More
    $9.99 MSRP:  $20.99
  13. SPC-25-2005 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    SPC-25-2005 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    20 inches by 2.5 inches, 5 micron. Fits into systems that use Liquatec SPF-25-2005, Pentek 255486-43 and Watts FM-5-20 water filters Learn More

    As Low As $0.00 Per Filter

  14. SPC-25-2010 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    SPC-25-2010 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    20 inches by 2.5 inches, 5 micron. Fits into systems that use Liquatec SPF-25-2005, Pentek 255486-43 and Watts FM-5-20 water filters Learn More

    As Low As $0.00 Per Filter

  15. SPC-25-2020 Hydronic Comparable Pleated Sediment Water Filter by Tier1

    SPC-25-2020 Hydronic Comparable Pleated Sediment Water Filter by Tier1

    20 inches by 2.5 inches, 20 micron. Fits into systems that use Liquatec SPF-25-2020, Pentek 255487-43 and Watts FM-20-20 water filters Learn More

    As Low As $0.00 Per Filter

  16. WP-30 Pentek Whole House Filter Replacement Cartridge

    WP-30 Pentek 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
    $6.99 MSRP:  $8.15
  17. WP-5 Pentek Replacement Filter Cartridge

    WP-5 Pentek Replacement Filter Cartridge

    Fits most standard housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $6.99 MSRP:  $8.84
  18. CW-50 Pentek Whole House Filter Replacement Cartridge

    CW-50 Pentek 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
    $6.99 MSRP:  $10.34
  19. S1A Culligan Level 2 Whole House Filter Replacement Cartridge (2-Pack)

    S1A-D Culligan Level 2 Whole House Filter Replacement Cartridge (2-Pack)

    Fits Culligan HF-150, HF-160, HF-360, HF-365, and any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $7.99 MSRP:  $10.80
  20. ECP50-10 Pentek Replacement Filter Cartridge

    ECP50-10 Pentek Replacement Filter Cartridge

    Fits most housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $7.99 MSRP:  $8.15
  21. R30-478 Pentek Undersink Filter Replacement Cartridge

    R30-478 Pentek Undersink Filter Replacement Cartridge

    Fits Pentek housings that use compact 4 7/8-inch x 2 5/8-inch replacement filter cartridges Learn More
    $8.99 MSRP:  $12.75
  22. ECP5-10 Pentek Undersink Filter Replacement Cartridge

    ECP5-10 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $9.19 MSRP:  $13.99
  23. SDC-25-2005 Hydronix Comparable Whole House Replacement Sediment Filter Cartridge by Tier1
  24. 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
    $6.99 MSRP:  $8.27
  25. S1-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1

    S1-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More

    As Low As $5.00 Per Filter

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