Indoor Air Quality (IAQ) in a space is influenced by a number of factors, such as occupancy levels and the level of activity in the space. Classrooms full of students and gyms with just a few members on treadmills both have the potential to affect IAQ in a short period of time.

Demand controlled ventilation is designed to align the rate of ventilation with the demand for fresh air. Without such alignment, there could either be under-ventilation (leading to poor IAQ) or over-ventilation (resulting in energy wastage).

Demand control is achieved by monitoring key IAQ metrics within the space (such as carbon dioxide levels or relative humidity) and adjusting the rate of ventilation accordingly. In this way, good IAQ can be maintained at all times with minimum energy consumption.

SAV AirMaster units can be configured to respond to either carbon dioxide levels or humidity content of the space being ventilated. They are fitted with variable speed, high efficiency electronically commutated (EC) fan drive motors which ensure rapid response times.

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