What must be done for all ductwork in conditioned spaces within the North Carolina Mechanical Code?

The North Carolina Mechanical Code requires that all ductwork in conditioned spaces must be insulated. This is essential for several reasons. Insulating ductwork helps to maintain the temperature of the air being transported through the ducts, minimizing energy loss and increasing the overall efficiency of the HVAC system. Proper insulation also helps to prevent condensation on the ducts, which can lead to moisture problems, including mold growth and degradation of the duct material over time.

In conditioned spaces, where the air temperature and humidity levels are controlled, exposing ducts without insulation can lead to significant heat transfer between the ducts and surrounding air. Insulation helps to ensure that the conditioned air remains within the desired temperature and comfort levels, enhancing indoor air quality and energy efficiency.

This requirement aligns with energy conservation goals and regulations aimed at promoting efficiency in mechanical systems, therefore, ensuring that all ductwork in such spaces is insulated is vital for compliance with the code and for the effective operation of HVAC systems.