Demand Control Kitchen Ventilation (DCKV)

Demand control kitchen ventilation (DCKV) optimizes the energy efficiency of an HVAC system by reducing the exhaust and Make-Up Air Unit fan speed in the hood system.

Demand Control Kitchen Ventilation (DCKV)


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How It Works

DCKVs use sensors that are put into place to detect cooking activity taking place under the exhaust hood. These sensors determine the minimum amount of exhaust air required to capture and contain effluent from the cook line.

Some DCKVs now use variable frequency drives based on exhaust temperature. This new enhancement allows for varying airflows throughout the day. By measuring temperature, steam, and smoke in the hood, DCKVs adjust the fan speed accordingly to save both fan energy and conditioned air.


Like all components of an HVAC system, DCKVs require routine maintenance and inspections. Managers should schedule inspections and maintenance on a semiannual basis with a technician from the manufacturer or service provider.

Routine maintenance should include cleaning the filters in the hood. Some DCKV systems automatically detect and send a warning signal if exhaust hood filters are clogged and need to be cleaned.


  • DCKV hoods automatically start when cooking appliances are turned on and stop as soon as cooking appliances cool down, minimizing energy consumption.
  • Improves the efficiency of a building's HVAC system resulting in a better environment for employees and customers

Building Applications

DCKV for commercial kitchen hoods is ideal both commercial and institutional buildings with large kitchen facilities, including restaurants, hospitals, nursing homes, and schools.

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