What is the function of a damper in an HVAC system?

The function of a damper in an HVAC system is to regulate airflow within the ductwork. Dampers are mechanical devices that can be opened or closed to control the volume and direction of air flowing through the ducts. By adjusting the damper position, HVAC technicians can balance air distribution throughout a space, ensuring that each area receives the appropriate amount of heating or cooling. This regulation contributes to the overall efficiency and effectiveness of the HVAC system, promoting comfort in the environment served by the system.

In contrast, increasing pressure in the ductwork is a role more associated with blower fans rather than dampers. Filtering harmful particles from the air is the job of air filters installed in the system, not dampers. Providing insulation for ductwork is another separate function that involves materials designed to minimize heat loss or gain, again unrelated to the purpose of dampers.