What characterizes double duct systems in HVAC?

Double duct systems in HVAC are characterized by the use of two separate ducts for heating and cooling. This design allows one duct to deliver heated air and the other to deliver cooled air, enabling more precise temperature control within a building. By having two distinct pathways for air distribution, double duct systems can effectively manage the different temperature requirements of various zones or spaces.

This separation also facilitates the mixing of air, allowing for more uniform temperature distribution throughout a building. It addresses the limitations of single duct systems, which can struggle to maintain consistent temperatures in different areas, particularly when heating and cooling needs fluctuate.

Moreover, while while options related to energy efficiency and operational demands may vary based on specific design and application, the key defining feature of double duct systems lies in their ability to handle heating and cooling as separate, streamlined processes.