Variable Air Volume (VAV)

Fresh air where you need, when you need

Ventilation systems are designed to handle a wide range of indoor and outdoor climate challenges, ensuring optimal comfort and air quality. To achieve this, systems are typically sized for peak demand conditions — accounting for factors such as outdoor temperature fluctuations, solar radiation and occupancy levels. Since these conditions constantly change, however, ventilation systems often end up running with more capacity than needed

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Sigbjørn Tyssen

Marine HVAC
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Michael Blume

Marine HVAC

By dynamically adjusting airflow based on real-time demand, we can significantly reduce unnecessary energy consumption while maintaining a comfortable and healthy indoor environment.

Key Benefits of Demand-Controlled Ventilation:

  • Lower airflow through the system – reduces pressure drop for more efficient operation
  • Decreased air velocity – reduces noise levels, improving comfort
  • Less air movement required – reduces fan energy consumption and operating costs
  • Minimized intake of cold outdoor air in winter – lowers heating demand
  • Minimized intake of warm outdoor air in summer – reduces cooling load

How It Works

Ventilation adjustments are made through modulating dampers and speed-controlled fans, which automatically regulate airflow based on real-time data from sensors monitoring temperature, air quality, CO₂ levels and occupancy — ensuring air supply matches actual demand rather than running at full capacity at all times.

By implementing demand-controlled ventilation, we create a more efficient, cost-effective and sustainable onboard climate system.