High air volume constant rates and demand-controlled airflows are considered to be the most efficient ventilation strategies to manage IAQ. The first one is the most widespread but it often requires heat recovery, then more electricity and more complex installations and maintenance. In turn, the demand-controlled ventilation (DCV) strategy has the potential to conciliate easily IAQ and energy aspects. Nevertheless, its performance is highly dependent from several key parameters such as the sensor’s types, the level of control and detection, the functional algorithm, the accuracy, the long-term reliability and the level of maintenance to name a few.
