What is the primary function of a plenum in an HVAC system?

The primary function of a plenum in an HVAC system is to distribute air from a furnace or other air handling unit to various sections of a building. The plenum acts as a central hub that helps transport conditioned air efficiently through ductwork to different rooms or areas. It is designed to help ensure uniform air distribution, maintaining consistent temperatures and comfort levels throughout the space.

By effectively channeling the air, the plenum minimizes pressure drop and optimizes the flow of air, which is crucial for the overall efficiency of the HVAC system. Understanding this function is vital for anyone involved in HVAC design, installation, or maintenance, as it directly impacts system performance and energy efficiency.