What is the primary function of a damper in HVAC duct systems?

The primary function of a damper in HVAC duct systems is to regulate airflow. Dampers are mechanical devices installed within ductwork that can be adjusted to control the volume of air flowing through the ducts. This regulation is crucial for maintaining indoor comfort and energy efficiency, as it allows for the balancing of airflow to various areas of a building.

By adjusting dampers, technicians can ensure that each room receives the appropriate amount of air based on its specific heating or cooling needs. This is particularly important in larger buildings where different rooms may have varying demands for temperature control. Additionally, dampers help in preventing airflow from being wasted and assist in optimizing the performance of the HVAC system overall.