Which system is primarily used to channel airflow in buildings?

The duct system is essential for channeling airflow within buildings. It serves as a network of conduits that directs heated or cooled air from HVAC (Heating, Ventilation, and Air Conditioning) units to various areas of a building. This system ensures that air is distributed evenly, maintaining a consistent temperature and good air quality in occupied spaces.

Duct systems can also influence air pressure, improve system efficiency, and facilitate the return of air back to the HVAC unit, which is crucial for balanced air circulation. While other systems like air conditioning and ventilation play important roles in managing indoor climate, the duct system is specifically the structure that transports and channels the air, making it integral to airflow management within buildings.