What is the maximum length permitted for transition ducts?

The correct answer indicates that the maximum length permitted for transition ducts is 8 feet. This regulation is important for ensuring that airflows through the duct system are efficient and that there is minimal resistance or pressure loss. Transition ducts serve as connections between different sizes or shapes of ductwork, which can affect airflow dynamics.

If these ducts are too long, it can lead to turbulence, increased static pressure, and inefficiencies in the overall heating or cooling system. The length limit is established to maintain good airflow and system performance, thereby enhancing the effectiveness of HVAC systems. By keeping transition ducts to a maximum of 8 feet, it ensures that the system operates effectively within the designed parameters, providing both comfort and energy efficiency in the space being served.