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. WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System

    WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System

    For use with DuPont WFPFC whole house filter cartridges Learn More
  2. HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    Fits any industry standard housing that accepts 4.5-inch by 20-inch replacement filters. Learn More
    $31.99 MSRP:  $36.79
  3. 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 MSRP:  $32.19
  4. 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
    $31.99 MSRP:  $32.19
  5. CFS117-S Cuno Whole House Filter Replacement Cartridge

    CFS117-S Cuno Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $32.05 MSRP:  $40.24
  6. 4WH-HDGAC-F01 Filtrete Replacement Filter Cartridge
  7. CQE-RC-04034 Crystal Quest Reusable Pleated Water Filter Cartridge

    CQE-RC-04034 Crystal Quest Reusable Pleated Water Filter Cartridge

    Fits Crystal Quest countertop, undersink and refrigerator water filtration systems Learn More
    $32.99 MSRP:  $50.59
  8. 3M Aqua-Pure AP810 Whole House Water Filter Cartridge

    3M Aqua-Pure AP810 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
    $33.99 MSRP:  $46.64
  9. 3M Aqua-Pure APS117 Whole House Water Filter Replacement Cartridge

    APS117 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $33.99 MSRP:  $40.81
  10. E5722-P Omnipure Carbon Block Water Filter

    E5722-P Omnipure Carbon Block Water Filter

    Fits systems that use the Everpure 4CB5-S water filter cartridge Learn More
    $33.99 MSRP:  $49.99
  11. HAC-10-LR-W Harmsco Chlorine and Lead Removal Whole House Filter

    HAC-10-LR-W Harmsco Chlorine and Lead Removal Whole House Filter

    Fits filter housings that are compatible with 9-3/4 x 2-3/4 inch filters Learn More
    $34.05 MSRP:  $48.29
  12. RVF-10 Culligan RV Pre-Tank Exterior Filter

    RVF-10 Culligan RV Pre-Tank Exterior Filter

    Fits a standard 3/4-inch garden hose Learn More
    $34.99 MSRP:  $38.51
  13. WP5BB20P Pentek Replacement Filter Cartridge

    WP5BB20P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $34.99 MSRP:  $42.54
  14. US-EZ-1 Culligan Level 1 Easy-Change Undersink Filter System
  15. 3M Aqua-Pure AP217 Under Sink Water Filter

    3M Aqua-Pure AP217 Undersink Filter Replacement Cartridge

    Fits 3M Aqua-Pure undersink water filter systems Learn More
    $36.99 MSRP:  $86.53
  16. AP327 3M Aqua-Pure Water Filter Replacement Cartridge

    AP327 3M Aqua-Pure Undersink Filter Replacement Cartridge

    Fits 3M Aqua-Pure undersink water filter systems Learn More
    $37.99
  17. EP-30 Pentek Replacement Filter Cartridge

    EP-30 Pentek Replacement Water Filter Cartridge

    Built to fit into water filtration system housings that use 30-inch x 2.5-inch filter cartridges Learn More
    $37.99 MSRP:  $46.10
  18. CQE-RC-04035 Crystal Quest Carbon Block Water Filter Cartridge

    CQE-RC-04035 Crystal Quest Carbon Block Water Filter Cartridge

    Fits Crystal Quest countertop, undersink and refrigerator water filtration systems Learn More
    $37.99
  19. CS-51 Cuno Inline Filter

    CS-51 Cuno Inline Filter

    Fits Cuno Food Service 450 series filter systems, including the CS-451 Learn More
    $39.99 MSRP:  $42.34
  20. CQE-RC-04014 Crystal Quest Carbon Block Water Filter Cartridge

    CQE-RC-04014 Crystal Quest Carbon Block Water Filter Cartridge

    Fits Crystal Quest countertop, undersink and refrigerator water filtration systems Learn More
    $39.99

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