A gradual decrease in the size of an air duct system, implemented to maintain appropriate airflow and static pressure, allows for efficient distribution of conditioned air throughout a building. For example, transitioning from a 12-inch diameter duct to a 10-inch diameter duct over a specific length constitutes a system modification aimed at optimizing air delivery.
The purposeful manipulation of duct dimensions yields benefits such as improved energy efficiency, reduced noise levels, and balanced temperatures across different zones. Historically, these modifications have been a key element in HVAC system design, evolving alongside advancements in building materials and mechanical engineering to ensure occupant comfort and system performance.
