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. 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
    $69.99 MSRP:  $78.19
  2. CFS01S Cuno Whole House Filter Housing

    CFS01S Cuno Whole House Water Filter Housing

    $132.05 MSRP:  $152.94

    Out of stock

  3. CFS02S Cuno Whole House Filter Housing
  4. CFS11S Cuno Whole House Filter Housing

    CFS11S Cuno Whole House Filter Housing

    $95.99 MSRP:  $101.19

    Out of stock

  5. HF60-S Cuno Whole House Filter Replacement Cartridge

    HF60-S Cuno Whole House Filter Replacement Cartridge

    Fits the Cuno Food Service High Flow Series Models including all SGP, ESP, BREW, BEV, and ICE Systems Learn More
    $138.99 MSRP:  $160.99

    Out of stock

  6. HF65 Cuno Whole House Filter Replacement Cartridge

    HF65 Cuno Whole House Filter Replacement Cartridge

    Fits the Cuno Food Service High Flow Series Models including all SGP, ESP, BREW, BEV, and ICE Systems Learn More
    $127.99 MSRP:  $148.80

    Out of stock

  7. HF65-S Cuno Whole House Filter Replacement Cartridge

    HF65-S Cuno Whole House Filter Replacement Cartridge

    Fits the Cuno Food Service High Flow Series Models including all SGP, ESP, BREW, BEV, and ICE Systems Learn More
    $133.99 MSRP:  $155.81
  8. MATRIKX-1-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-1-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
    $47.99 MSRP:  $58.99
  9. FLOPLUS-20BB Pentek Replacement Filter Cartridge

    FLOPLUS-20BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $78.99 MSRP:  $95.99
  10. SLIM-CLEAR-14-WPR5 Pentek Whole House Slim 5 inch Filter Housing
  11. MAXETW-FF20 Watts C-MAX Whole House Replacement Filter Cartridge

    MAXETW-FF20 Watts C-MAX Whole House Water Filter Cartridge

    Fits 20-inch x 4.5-inch water filtration system housings Learn More
    $68.99 MSRP:  $74.74

    Out of stock

  12. MATRIKX-5-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-5-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
  13. MATRIKX 32-450-10-GREEN / CTO2-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX 32-450-10-GREEN / 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
  14. MATRIKX-Pb1-HD10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-PB1-HD10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More
    $63.99 MSRP:  $69.29
  15. TO8 OmniFilter Whole House Replacement Filter Cartridge

    TO8 OmniFilter Whole House Replacement Water Filter Cartridge

    Fits into most 10-inch water filtration system housings Learn More
    $34.99 MSRP:  $44.84
  16. CBC20-BB Pentek Replacement Filter Cartridge

    CBC20-BB Pentek Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $114.17
  17. CB-45-1001 Hydronix Replacement Whole House Filter Cartridge

    CB-45-1001 Hydronix Replacement Whole House Filter Cartridge

    Fits most housings that accept 10 inch x 4.5 filter cartridges Learn More
    $24.99 MSRP:  $27.34
  18. CB-45-1010 Hydronix Replacement Whole House Carbon Water Filter

    CB-45-1010 Hydronix Replacement Whole House Carbon Water Filter

    Fits in housings that accept 10 x 4-1/2 inch replacement filters Learn More
    $24.39
  19. F-20-2215 Aries Polypropylene Sediment Water Filter Replacement by Tier1
  20. Pentek RFC-20 Whole House Water Filter Replacement Cartridge

    RFC-20 Pentek Whole House Filter Replacement Cartridge

    Fits Pentek Big Blue and other heavy duty filter housings Learn More

    As Low As $26.17 Per Filter

  21. 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

  22. 1063-15-BB-K234 KX Technologies Whole House Replacement Filter Cartridge

    1063-15-BB-K234 KX Technologies Whole House Replacement Filter Cartridge

    Fits into multi-round housings Learn More
    $66.99 MSRP:  $86.99
  23. 22006 Hydrologic Comparable Whole House Water Filter by Tier1

    22006 Hydrologic Comparable Whole House Water Filter by Tier1

    Fits most standard 20 x 4.5-inch housings Learn More

    As Low As $0.00 Per Filter

  24. FXHTC GE SmartWater Whole House Filter Replacement Cartridge

    FXHTC GE SmartWater 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
    $40.99 MSRP:  $49.99
  25. FXHSC GE SmartWater Whole House Filter Replacement Cartridge

    FXHSC GE SmartWater 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
    $21.99 MSRP:  $29.95

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