KohlerK-21371-NAItem # bci4195386

Aquifer Refine Water Purification Under Sink Filtration Systems with Kohler Konnect

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Kohler Aquifer Refine Water Purification Under Sink Filtration Systems with Kohler Konnect

Feel confident with every sip that you are getting nothing but the best for you and your family. The Aquifer Refine water filtration system with Kohler Konnect voice-activation technology, effectively reduces contaminants including bacteria, virus, lead, mercury, chlorine select pharmaceuticals, VOC's and more in your cold water. While many other systems use coal-based media filters, Aquifer Refine uses three recyclable filters: two carbon block filters and an ultra-filter. Under-sink installation is fast and easy, and the compact Aquifer Refine system fits alongside garbage disposals and household items stored below the sink.

Kohler K-21371 Features:

  • Three-stage filtration system with KOHLER Konnect voice activation technology lets you know your water usage and filter life
  • Reduces over 95% of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) in drinking water
  • Ultra-filter membrane technology reduces bacteria and virus in the water
  • Reduces contaminants such as bacteria, virus, lead, mercury, chorine, select pharmaceuticals, VOC's and more
  • AC-powered operation—no batteries to replace (requires AC power outlet)
  • Provides up to 792 gallons, or the equivalent of over 5,800 16.9 fl oz bottles of water (results may vary based on water pressure, temperature and incoming water quality)
  • 0.65 gpm (2.46 lmin) maximum flow rate at 60 psi (4.14 bar)
  • Filter head automatically turns off the water supply when cartridge is removed
  • Includes three filter cartridges (K-21372, K-21373, K-21374)
  • Recommended for use with beverage faucets, such as Wellspring
  • Innovative sensor monitors water usage and displays that information on the Kohler Konnect app

Kohler K-21371 Installation:

  • For cold water use only
  • Under-sink
  • Quarter-turn twist cartridge for easy installation and replacement
  • Three-cartridge system includes two coconut shell-based carbon filters and an ultra-filter
  • Kohler Konnect app pairs with Amazon Alexa and Google Home

Kohler K-21371 Specifications:

  • Voltage: 120
  • Height: 16-1/4" (from top to bottom)
  • Width: 5-1/8" (from left to right)
  • Flow Rate (GPM): 0.65 GPM


Flow Rate (GPM)
16.25 in.
5.125 in.
Faucet Included
Dispenser Type
Cold Only
Filter Type
Carbon Filters
Manufacturer Warranty
1 Year Limited