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Undersink Water Filter 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.

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  1. BFS-201 Pentek Slim Line Filter Housing with Pressure Relief Valve

    BFS-201 Pentek Slim Line Filter Housing with Pressure Relief Valve

    Fits standard 3/8-inch water lines Learn More
    $53.99 Retail Price:  $56.80
  2. 3G-SLIM-38-NPT10 Pentek Whole House Slim 10 inch Filter Housing
  3. 158643 Pentek Slim Line Filter Housing with Pressure Relief Valve - Clear
  4. 158642 Pentek Slim Line Filter Housing - Blue

    158642 Pentek Slim Line Filter Housing - Blue

    $19.99 Retail Price:  $25.29
  5. 158117 Pentek Slim Line Filter Housing - Clear

    158117 Pentek Slim Line Filter Housing - Clear

    $18.99 Retail Price:  $24.14
  6. 158110 Pentek Filter Housing - Clear

    158110 Pentek Filter Housing - Clear

    $18.99 Retail Price:  $22.41
  7. 158008 Pentek Slim Line Filter Housing - Clear

    158008 Pentek Slim Line Water Filter Housing - Clear

    Fits standard 3/8-inch water lines Learn More
    $12.50 Retail Price:  $16.55
  8. 153128 Pentek Filter Housing Sump - Clear
  9. 153029 Pentek Filter Housing Sump

    153029 Pentek Filter Housing Sump

    Fits the cap of Pentek and Culligan HD-950, and #10 Big Blue (not clear) housings of any inlet/outlet size Learn More
    $32.99 Retail Price:  $40.24
  10. 153018 Pentek Slim Line Filter Housing Sump - Clear
  11. 153017 Pentek Slim Line Filter Housing Sump - Blue

    153017 Pentek Slim Line Filter Housing Sump - Blue

    Fits the cap of SY-5197 10-inch Slim Line Housings, as well as other countertop and undersink systems Learn More
    $11.29 Retail Price:  $15.28
  12. 150550 Pentek 3G Whole House Filter System

    150550 Pentek 3G Whole House Filter System

    Fits most industry standard of 10 x 2.5 inch filter cartridges Learn More
    $25.99 Retail Price:  $35.64
  13. US-1500 Pentek Undersink Filter System with Monitor
  14. US-1000 Pentek Undersink Filter System

    US-1000 Pentek Undersink Filter System

    $126.99 Retail Price:  $139.71
  15. PENTEK-SLIM-PR10-JG38 Pentek Undersink Filter 10 inch Housing
  16. SLIM-CLEAR-14-WPR5 Pentek Whole House Slim 5 inch Filter Housing
  17. SLIM-38-PR5 Pentek Whole House Slim 5 inch Filter Housing
  18. SLIM-14-WPR5 Pentek Whole House Slim 5 inch Filter Housing
  19. QC10-TSGAC Pentek Undersink Quick-Change Filter System
  20. QC10-GAC Pentek Undersink Quick-Change Filter System

    QC10-GAC Pentek Quick-Change Water Filter System

    $22.99 Retail Price:  $30.69
  21. QC10-EP Pentek Undersink Quick-Change Filter System

    QC10-EP Pentek Quick-Change Filter System

    Regular Price: $29.99

    Special Price: $27.05

  22. QC10-CBR-THREADED Pentek Undersink Quick-Change Filter System
  23. QC10-CBR-JG14 Pentek Undersink Quick-Change Filter System
  24. QC10-CB1 Pentek Undersink Quick-Change Filter System

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