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. HF8-S Cuno Whole House Filter Replacement Cartridge

    HF8-S Cuno Whole House Water Filter Cartridge

    Fits the Cuno Food Service SF18-S for high-temperature equipment Learn More
  2. 153070 Pentek Filter Housing Sump

    153070 Pentek Filter Housing Sump

    Fits the cap of #20 Big Blue (not clear) housings of any inlet or outlet size Learn More
    $51.99 MSRP:  $57.95
  3. 3G-STANDARD-20-CLEAR-PR20 Pentek Whole House 20 inch Filter Housing
  4. Pentek 166142 Big White 20-inch x 4.5-inch Filter Housing

    Pentek 166142 Big White 20-inch x 4.5-inch Filter Housing

    Receives any standard 20-inch by 4.5-inch filter cartridge Learn More
    $51.99 MSRP:  $65.54
  5. CFS8720 Cuno Whole House Filter Replacement Cartridge

    CFS8720 Cuno Whole House Filter Replacement Cartridge

    Fits any filtration system that uses the Cuno 8000 Series Replacement Cartridges Learn More
    $52.05 MSRP:  $61.97
  6. 3M Aqua-Pure AP810-2 Whole House Water Filter Cartridge

    AP810-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
    $52.99 MSRP:  $84.20
  7. 166227 Pentek Big White 3/4-inch #20 Housing Assembly
  8. BFS-201 Pentek Slim Line Filter Housing with Pressure Relief Valve

    BFS-201 Pentek Slim Line Filter Housing with Pressure Relief Valve

    Fits standard 3/8-inch water lines Learn More
    $53.99 MSRP:  $56.80
  9. 3WH-HD-S01 Filtrete Whole House Sump System
  10. 22017 Hydrologic Replacement De-Ionization Cartridge

    22017 Hydrologic Deionization Filter Cartridge

    Fits 10 inch by 4.5 inch filtration system housings Learn More
    $54.99 MSRP:  $71.29
  11. FM-BB-20-1A Watts Pleated Water Filter Cartridge
  12. 3M Aqua-Pure AP814-2 Whole House Water Filter

    AP814-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
  13. CFS8110 Cuno Whole House Filter Replacement Cartridge

    CFS8110 Cuno Whole House Filter Replacement Cartridge

    Fits any filtration system that uses the Cuno 8000 Series Replacement Cartridges Learn More
    $56.99 MSRP:  $61.97
  14. 1-500-F Rusco Polyester Screened Spin-Down Water Filtration System

    1-500-F Rusco Polyester Screened Spin-Down Water Filtration System

    500 mesh, 30 micron and built to fit a one inch pipe Learn More
    $57.99 MSRP:  $68.99
  15. FLOPLUS 20BB Comparable Water Filter Cartridge by Tier1

    CBC-20BB Pentek Replacement Filter Cartridge by Tier1

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More
    $57.99 MSRP:  $136.99
  16. RFC20-BB Pentek Carbon Filter Replacement Cartridge

    RFC20-BB Pentek Replacement Filter Cartridge

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

    As Low As $52.16 Per Filter

  17. CFS8720-S Cuno Whole House Filter Replacement Cartridge

    CFS8720-S Cuno Whole House Filter Replacement Cartridge

    Fits any filtration system that uses the Cuno 8000 Series Replacement Cartridges Learn More
    $58.05 MSRP:  $64.39
  18. 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
    $58.99 MSRP:  $66.69
  19. 4WH-QS-F01 Filtrete Replacement Filter Cartridge

    4WH-QS-F01 3M Filtrete Replacement Water Filter

    Fits 3M Filtrete High Performance Whole House water filtration systems Learn More
  20. PGE-2 Water Sentinel ProGuard Swamp Cooler Replacement Filter Cartridge

    PGE-2 Water Sentinel ProGuard Swamp Cooler Replacement Filter Cartridge

    Fits right inside your swamp cooler's water pan Learn More
    $59.99 MSRP:  $73.99
  21. W10-PR American Plumber Whole House Filter System
  22. HSH-C135 Culligan Handheld Filtered Shower Head with Massage

    HSH-C135 Culligan Handheld Filtered Shower Head with Massage

    Fits any standard 1/2-inch threaded shower arm Learn More
    $50.29 MSRP:  $67.99
  23. EV9611-00 Everpure 4H Replacement Filter Cartridge

    EV9611-00 Everpure 4H Replacement Filter Cartridge

    Fits Everpure filter heads including models QL1, QL2, QL3, and QL3B Learn More
    $50.69 MSRP:  $94.99
  24. C-LC 3M Aqua-Pure Undersink Water Filter

    C-LC 3M Aqua-Pure Undersink Water Filter Cartridge

    Fits the 3M Aqua-Pure Easy Drinking Water System, Easy LC and Easy LP Replacement Systems Learn More
    $50.99 MSRP:  $65.54
  25. CB3 OmniFilter Undersink Filter Replacement Cartridge

    CB3-SS6-06 OmniFilter Undersink Filter Replacement Cartridge

    Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $50.99

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