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

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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. CL6ROT33-A Omnipure GAC Inline Water Filter

    CL6ROT33-A Omnipure GAC Inline Water Filter

    Ideal for use in water coolers, drinking fountains, under sink systems, ice machines, and reverse osmosis systems Learn More
  2. WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    Fits most standard 10-inch x 2.5-inch housings Learn More
    $10.99 MSRP:  $14.99
  3. DuPont WFPTC100X Water Pitcher Replacement Cartridge High Protection

    DuPont WFPTC100X Water Pitcher Replacement Cartridge High Protection

    Fits the DUPONT-WPT100XW, DUPONT-WFPT075X, DUPONT-WFPT200X DuPont Water Filter Pitchers Learn More
    $10.99 MSRP:  $15.99
  4. The Pentek C1 comparable Whole House Carbon Water Filter by Tier1

    Pentek C1 Comparable Carbon Block Water Filter by Tier1

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

    As Low As $9.83 Per Filter

  5. WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1

    WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More

    As Low As $0.00 Per Filter

  6. SWC-25-2005 Hydronix Comparable String Wound Sediment Water Filter (5 micron) by Tier1
  7. SWC-25-2005 Hydronix Comparable String Wound Sediment Water Filter (5 micron) by Tier1
  8. SWC-25-2010 Hydronix Comparable String Wound Sediment Water Filter (5 micron) by Tier1
  9. SB-3 Squeezable Filtered Sport Bottle (27 oz.)

    SB-3 WaterWay Squeezable Filtered Sport Bottle (27 oz.)

    Comes complete with filter Learn More
    $11.39 MSRP:  $28.99
  10. AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    For use with Viqua UltraViolet Disinfection Systems requiring 10 x 2.5-inch filter pre-treatment Learn More
    $11.39 MSRP:  $16.99
  11. EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    Fits standard 20 x 2.5-inch housings Learn More
    $11.99 MSRP:  $20.99
  12. FXWTC GE Comparable Whole House Water Filter 2-Pack by Tier1

    FXWTC GE Comparable Whole House Water Filter by Tier1 (2-Pack)

    Fits GE FXWTC, FXUSC, FXWSC and FWPC Learn More
    $11.99 MSRP:  $15.99
  13. AP-GRMB-05PP-20UB Whole House Replacement Filter by 3M Aqua-Pure

    3M Aqua-Pure AP-GRMB-05PP-20 Whole House Water Filter Replacement

    Fits most standard 20-inch x 2.5-inch housings Learn More
    $11.99 MSRP:  $14.34
  14. AP-GRMB-10PP-20UB Whole House Replacement Cartridge by 3M Aqua-Pure

    AP-GRMB-10PP-20UB Whole House Replacement Filter by 3M Aqua-Pure

    Fits most standard 20-inch x 2.5-inch housings Learn More
    $11.99 MSRP:  $14.34
  15. AP-GRMB-20PP-20UB Whole House Water Filter Replacement Cartridge

    3M Aqua-Pure AP-GRMB-20PP-20 Whole House Water Filter Replacement

    Fits most standard 20 inch x 2 1/2 inch housings Learn More
    $11.99 MSRP:  $14.34
  16. AP-GRMB-50PP-20UB Whole House Water Filter Replacement Cartridge

    3M Aqua-Pure AP-GRMB-50PP-20UB Whole House Water Filter Replacement

    Fits most standard 20 inch x 2 1/2 inch housings Learn More
    $11.99 MSRP:  $14.34
  17. K2528-KK Omnipure GAC Inline Water Filter

    K2528-KK Omnipure GAC Inline Water Filter

    Fits standard 3/8-inch water lines Learn More
    $11.99 MSRP:  $17.99
  18. Pentek EP-10 Replacement Water Filter Cartridge

    Pentek EP-10 Filter Cartridge Replacement

    Fits most housings that accept standard 10-inch x 2.5-inch water filter cartridges Learn More

    As Low As $7.80 Per Filter

  19. Pentek P1-20 Whole House Water Filter Replacement Cartridge

    Pentek P1-20 Sediment Whole House Filter Replacement Cartridge

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

    As Low As $9.75 Per Filter

  20. P5-10BB Tier1 Sediment Water Filter

    P5-10BB Tier1 Sediment Water Filter

    Fits filtration system housings that accept 10 x 4.5 inch cartridges Learn More

    As Low As $10.83 Per Filter

  21. TO1SS OmniFilter Whole House Water Filter

    TO1SS OmniFilter Whole House Water Filter Replacement Cartridge

    Designed to fit into any brand of whole house water filtration system that accepts standard 9 3/4 x 2 1/2 inch cartridges Learn More

    As Low As $9.67 Per Filter

  22. W5CIP American Plumber Whole House Carbon Water Filter by Tier1

    W5CIP American Plumber Whole House Carbon Water Filter by Tier1

    Fits GE FXWTC, FXUSC, FXWSC and FWPC Learn More

    As Low As $0.00 Per Filter

  23. W20CLHD American Plumber Whole House Sediment Filter by Tier1

    W20CLHD American Plumber Whole House Sediment Filter by Tier1

    Fits most 10-inch standard housings Learn More

    As Low As $0.00 Per Filter

  24. ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most 10-inch standard housings Learn More

    As Low As $0.00 Per Filter

  25. D-10 Twin Culligan Comparable Whole House Carbon Water Filter by Tier1

    D-10 Twin Culligan Comparable Whole House Carbon Water Filter by Tier1

    Fits GE FXWTC, FXUSC, FXWSC and FWPC Learn More

    As Low As $0.00 Per Filter

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