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Replacement Water Filters: Undersink

Keep your kitchen space neat and tidy, while reducing contaminants in your tap water with an under sink water filter system.

The beauty of under sink water filter systems is that they neatly fit underneath your sinks and don’t rob you of valuable counter space as countertop water filters do. Unlike other filter models, with under sink water filters there are no valves or tubing cluttering your counter. Because they remain out of sight, you can install larger under sink water filter models designed to filter out additional water contaminants such as fluorides, arsenic, and nitrates.

Below you’ll find over 60+ OEM under sink water filter systems, housings and filters from some of the top brands, including Pentek®, Culligan®, Whirlpool®, Doulton®, OmniFilter®, and more.

Need help choosing the right under sink water filter system? Our experts can help you choose the perfect under sink water filter to address all of your water quality concerns, just give us a call at 1-800-277-3458.

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  1. OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    Standard 10 inch by 2.5 inch size fits many common filter housings Learn More
    $4.99 Retail Price:  $8.04
  2. Pentek QC10-CB1R Carbon Block Quick Change Filter

    Pentek QC10-CB1R Carbon Block Quick Change Filter

    Proprietary design fits Pentek QC systems exclusively Learn More
    $22.99 Retail Price:  $31.04
  3. KX-TECHNOLOGIES-32-250-125-050

    KX-TECHNOLOGIES-32-250-125-050

    $9.99 Retail Price:  $10.34
  4. KX-MATRIKX-PB1-HD10
  5. KX-MATRIKX-PB1-10
  6. KX-MATRIKX-CTO2-10

    KX-MATRIKX-CTO2-10

    $9.99 Retail Price:  $10.34
  7. KX-MATRIKX-5-10
  8. KX-MATRIKX-1-10

    KX-MATRIKX-1-10

    $10.99 Retail Price:  $14.94
  9. KOHLER-K-202

    KOHLER-K-202

    $112.99 Retail Price:  $131.09
  10. KOHLER-K-201

    KOHLER-K-201

    $94.99 Retail Price:  $109.24
  11. INSINKERATOR-F-601R

    INSINKERATOR-F-601R

    $126.99 Retail Price:  $134.42
  12. OMNIFILTER-RS19
  13. OMNIPURE-OMB934-1L

    OMNIPURE-OMB934-1L

    $14.99 Retail Price:  $21.38
  14. ECP5-10 Pentek Undersink Filter Replacement Cartridge

    ECP5-10 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $5.99 Retail Price:  $9.42
  15. PENTEK-CRE-1

    PENTEK-CRE-1

    $24.69 Retail Price:  $30.69
  16. PENTEK-CCBC-10

    PENTEK-CCBC-10

    $15.99 Retail Price:  $19.31
  17. PENTEK-CC-10
  18. CBR2-10R Pentek Undersink Filter Replacement Cartridge

    CBR2-10R Pentek Undersink Filter Replacement Cartridge

    Fits Pentek under-sink filter housings and any housing that uses standard 9 3/4-inch by 2 1/2-inch filter cartridges Learn More
    $17.99 Retail Price:  $21.95
  19. PENTEK-CBR2-10

    PENTEK-CBR2-10

    $16.99 Retail Price:  $18.85
  20. PENTEK-CBC-5

    PENTEK-CBC-5

    $11.99 Retail Price:  $16.55
  21. PENTEK-C2

    PENTEK-C2

    $5.99 Retail Price:  $8.84
  22. PENTEK-C1

    PENTEK-C1

    $6.99 Retail Price:  $9.42
  23. INSINKERATOR-F-201R

    INSINKERATOR-F-201R

    $63.99 Retail Price:  $73.36
  24. FXSLC GE SmartWater Undersink Filter Set

    FXSLC GE SmartWater Undersink Filter Set

    Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
  25. Whirlpool WHKF-GAC Undersink Replacement Water Filter Cartridge

    WHKF-GAC Whirlpool Undersink Replacement Filter Cartridge

    Fits the Whirlpool WHKF-DUF Under Sink Filter Housing Learn More
    $17.99

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