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Demand-Controlled Ventilation

Demand-controlled ventilation (DCV) systems aim to match outside air supply to actual occupant need.

Benefits of DCV include:

  • Lower energy bills. In most businesses, heating, ventilation and cooling typically account for more than 50 per cent of energy costs. DCV reduces energy required to heat, cool, humidify, and dehumidify excess ventilation air.
  • Less demand on your HVAC system. DCV may reduce maintenance costs and increase equipment life.
  • Improved marketability of your building. Value is added by improved comfort and lower operating costs.
  • Reduced greenhouse gas emissions. Reduced energy use decreases the amount of greenhouse gas emissions produced.
  • Consistent indoor air quality. DCV helps ensure occupant health, safety, and comfort.

There are three common DCV strategies you can apply in your building:

  1. Time-controlled ventilation.
  2. Occupancy sensors.
  3. Carbon dioxide (CO2) sensors.

Fixed ventilation may be adequate in your building if you do not experience significant changes in occupancy.