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. CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $15.69 MSRP:  $23.99
  3. CB-45-2010 Hydronix Replacement Filter Cartridge

    CB-45-2010 Hydronix Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $48.99 MSRP:  $58.99
  4. 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
  5. SDC-25-2020 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-25-2020 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $7.99 MSRP:  $11.34
  6. SDC-45-1001 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-45-1001 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $13.99 MSRP:  $17.34
  7. SDC-45-1005 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-45-1005 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $13.99 MSRP:  $17.34
  8. SDC-45-2050 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-45-2050 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $20.99 MSRP:  $27.59
  9. SPC-45-2005 Hydronix Whole House Replacement Sediment Filter Cartridge

    SPC-45-2005 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $21.99 MSRP:  $29.89
  10. FPIR-BB-20 Watts Whole House Replacement Filter Cartridge

    FPIR-BB-20 Watts Whole House Iron Water Filter Cartridge

    For use in water filtration system housings that use a 20-inch x 4.5-inch filter Learn More
  11. FPMB-BB20-10 Watts Flo-Pro Whole House Replacement Filter Cartridge

    FPMB-BB20-10 Watts Flo-Pro Whole House Water Filter Cartridge

    Fits most standard water filtration system housings requiring a 9 3/4-inch x 4 1/2-inch filter Learn More
    $15.99 MSRP:  $17.34
  12. FPMB20-20 Watts Flo-Pro Whole House Replacement Filter Cartridge

    FPMB20-20 Watts Flo-Pro Whole House Water Filter Cartridge

    Fits water filtration system housing that accept a 20-inch x 2.5-inch filter Learn More
    $9.99 MSRP:  $12.34
  13. FPMB5-20 Watts Flo-Pro Replacement Filter Cartridge

    FPMB5-20 Watts Flo-Pro Water Filter Cartridge

    Fits water filtration system housing that accept a 20-inch x 2 1/2-inch filter Learn More
    $5.99 MSRP:  $6.89
  14. 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
  15. W20FFPH1CBPR Watts Flowmatic Big Clear Whole House Water Filter Housing

    W20FFPH1CBPR Watts Flowmatic Big Clear Whole House Water Filter Housing

    Fits 20-inch by 4.5-inch water filter Learn More
    $110.99 MSRP:  $113.34
  16. W10FFPH1CBPR Watts Full Flow Whole House Water Filter Housing

    W10FFPH1CBPR Watts Full Flow Whole House Water Filter Housing

    Fits 10-inch x 4.5-inch sediment water filters Learn More
    $79.99 MSRP:  $91.99
  17. FH4200CW12 Watts Flowmatic Clear Water Filter Housing

    FH4200CW12 Watts Flowmatic Clear Water Filter Housing

    Fits 9-3/4 in L x 2-7/8 W water filters Learn More
    $28.99 MSRP:  $31.04
  18. WQCCC11 Watts Kwik-Change Pre-Carbon Water Filter Cartridge

    WQCCC11 Watts Kwik-Change Pre-Carbon Water Filter Cartridge

    Fits Watts Kwik-Change Drinking Water & Reverse Osmosis Water Filtration Systems Learn More
    $17.99 MSRP:  $25.29
  19. SDC-45-2001 Hydronix Comparable Whole House Replacement Sediment Filter Cartridge by Tier1

    SDC-45-2001 Hydronix Comparable Whole House Replacement Sediment Filter Cartridge by Tier1

    Fits most standard 20 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

  20. WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge

    WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge

    Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings Learn More
    $35.99 MSRP:  $39.99
  21. W20CLA American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W20CLA American Plumber Whole House Sediment Water Filter Cartridge (2-Pack)

    Built to fit into American Plumber W34-PR, WC34-PR and WVC34 whole house water filtration systems, in addition to most standard size water filtration system housings Learn More
    $11.99 MSRP:  $15.34
  22. W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $12.99 MSRP:  $16.34
  23. W30PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W30PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $16.99 MSRP:  $18.04
  24. W50PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W50PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $16.99 MSRP:  $18.39
  25. W50W American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W50W American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $13.99 MSRP:  $17.34

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