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

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Inline Water Filters

Keep crystal clear clean water flowing through your house, faucets, and appliances with a new brand name inline water filter.

Looking for an inline post filter for your reverse osmosis water filter system or for an inline filter to use in one of your home appliances (i.e. washing machine or dishwasher)? Choose from over 130+ inline water filters, from the industry’s best performing brands, including Watts®, Culligan®, GE, Whirlpool®, and more. From American Plumber to Whirlpool inline water filters, 0.5 micron to 30 micron filter element ratings, activated carbon to polypropylene filter media, DiscountFilterStore.com has all your inline water filter needs conveniently in one place and at prices guaranteed to beat the big box stores (100% Price Match Guarantee).

If inline filters for your home appliances isn’t quite what you’re looking for? We also carry a number of inline water filters, dechlorinators, and sediment pre-filters for use in your garden (Rainshow’r).

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  1. 600R American Plumber Undersink Filter Replacement Cartridge

    600R American Plumber Undersink Water Filter Cartridge

    Built to fit into American Plumber WIC-600 and DW-600 undersink water filtration systems Learn More
    $31.99 MSRP:  $35.06
  2. WIC-600 American Plumber Undersink Filter System

    WIC-600 American Plumber Undersink Filter System

    Fits any 1/4-inch water line Learn More
    $55.99 MSRP:  $58.34
  3. 3M Aqua-Pure AP717 Inline Water Filter

    AP717 3M Aqua-Pure Inline Filter System

    Fits any 1/4-inch plastic or copper water line Learn More
    $31.99 MSRP:  $34.49
  4. 3M Aqua-Pure APIL3R Inline Water Filter

    APIL3R 3M Aqua-Pure Inline Water Filter Cartridge

    Fits the 3M Aqua-Pure APIL3 inline water filtration system Learn More
  5. IC-EZ-3 Culligan Level 3 Easy-Change Inline Filter System
  6. IC-EZ-4 Culligan Level 4 Easy-Change Inline Filter System
  7. RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    Fits Culligan Easy-Change filter systems including IC-EZ-4, US-EZ-4, and RV-EZ-4 Learn More
    $45.19 MSRP:  $78.99
  8. TS-500 Culligan Large Capacity Inline Filter Replacement Cartridge
  9. GXRLQK GE SmartWater Inline Filter System

    GXRLQK GE SmartWater Inline Filter System

    Fits any 1/4-inch plastic or copper water line Learn More
    $37.59 MSRP:  $54.99
  10. FQK1K GE SmartWater Inline Filter Replacement Cartridge

    FQK1K GE SmartWater Inline Filter Replacement Cartridge

    Fits the GE SmartWater GXRLQK filter system as well as GXK185K, GXRLQR, GX1S50R Learn More
    $36.49 MSRP:  $44.99 As low as: $36.49
  11. GXRTQ GE SmartWater Inline Filter System

    GXRTQ GE SmartWater Inline Filter System

    Fits any 1/4-inch plastic or copper water line Learn More
  12. 800R OmniFilter Quick Change Replacement Filter Cartridge

    800R OmniFilter Quick Change Replacement Water Filter Cartridge

    Fits the OmniFilter SFM3 and R800 water filtration systems Learn More
  13. R1100 OmniFilter Quick Change Inline Refrigerator Filter

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