What are installed in branch ducts near their takeoff point on the plenum to adjust warm airflow for equal comfort conditions?

Dampers are devices installed in branch ducts near their takeoff points on the plenum to regulate and control the airflow. They can be adjusted manually or automatically to balance the air distribution throughout the system, ensuring that each area receives the appropriate amount of warm air to achieve equal comfort conditions. This is particularly important in heating, ventilation, and air conditioning (HVAC) systems, where uneven temperatures can lead to discomfort in different parts of a building.

By providing the ability to increase or decrease airflow in specific branches, dampers help maintain an even temperature and improve overall system efficiency. Other components, such as filters, heaters, and blowers, serve different functions within the HVAC system, such as filtering air, adding heat, or moving air, but do not play a direct role in adjusting airflow for comfort in the way dampers do.