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Undersink Water Filters & Systems

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.

Items 1 to 25 of 41 total

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  1. D-25 Culligan Under Sink Water Filter

    D-25 Culligan Under Sink Water Filter

    Fits under sink filter systems that use 10 x 2.5-inch filters Learn More
    $11.99 Retail Price:  $16.99
  2. OMNIFILTER-SFM2
  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. 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
  8. PENTEK-CBR2-10

    PENTEK-CBR2-10

    $16.99 Retail Price:  $18.85
  9. KX-MATRIKX-1-10

    KX-MATRIKX-1-10

    $10.99 Retail Price:  $14.94
  10. PENTEK-TSGAC-10

    PENTEK-TSGAC-10

    $19.39 Retail Price:  $24.60
  11. 47-55712G2 Water Factory Systems Replacement Filter Cartridge

    47-55712G2 Water Factory Systems Replacement Filter Cartridge

    Fits 3M Cuno Water Factory FaucetMATE FM-2-CTO two-stage system Learn More
    $42.59 Retail Price:  $51.28
  12. 47-5574704 Water Factory Systems FaucetMATE Carbon Block Filter

    47-5574704 Water Factory Systems FaucetMATE Carbon Block Filter

    Fits 3M Cuno Water Factory FaucetMATE FM DWS 1500 one-stage system Learn More
    $66.99 Retail Price:  $77.61
  13. 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
  14. PENTEK-CC-10
  15. HYDROLOGIC-22035

    HYDROLOGIC-22035

    $184.99 Retail Price:  $215.04
  16. AP510 AquaPure Water Filtration System

    AP510 AquaPure Water Filtration System

    3/8-inch NPT pipe size, 5 Micron. Quick Connect fittings make installation easy! Learn More
    $141.99 Retail Price:  $146.04
  17. CULLIGAN-D-20

    CULLIGAN-D-20

    $10.95 Retail Price:  $13.79
  18. CULLIGAN-750R-D

    CULLIGAN-750R-D

    $15.99 Retail Price:  $17.93
  19. CULLIGAN-D-250A

    CULLIGAN-D-250A

    $36.99 Retail Price:  $39.09
  20. D-28 Culligan Level 1 Undersink Filter Replacement Cartridge

    D-28 Culligan Level 1 Undersink Filter Replacement Cartridge

    Fits Culligan US-550, US-600, US-600A, and any brand of water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
  21. CULLIGAN-US-600

    CULLIGAN-US-600

    $35.99 Retail Price:  $41.39
  22. P1012581 Culligan Undersink Replacement Filter Cartridge

    P1012581 Culligan Undersink Replacement Filter Cartridge

    Fits the Culligan 201 Under Sink Water Filter System Learn More
  23. AP200 Aqua-Pure Undersink Filter System
  24. WGCHD American Plumber Undersink Water Filter Replacement Cartridge

    WGCHD American Plumber Undersink Filter Replacement Cartridge

    Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings Learn More
    $31.99 Retail Price:  $48.29
  25. WGC478 American Plumber Undersink Compact Filter Replacement Cartridge

    WGC478 American Plumber Undersink Compact Filter Replacement Cartridge

    Fits American Plumber WGC478 Learn More
    $10.99 Retail Price:  $14.94

Items 1 to 25 of 41 total

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