What is the purpose of sealing joints in ductwork?

The primary purpose of sealing joints in ductwork is to minimize air leaks and enhance system efficiency. When ductwork has unsealed joints, conditioned air can escape into unconditioned spaces, leading to significant energy losses. Ensuring that all joints are properly sealed contributes to the overall efficiency of the HVAC system by maintaining the desired temperature and reducing the workload on heating and cooling equipment. This sealing practice not only improves energy efficiency but also can lead to lower utility bills and a more comfortable indoor environment, as the system can maintain its set temperature more effectively when air is not escaping through leaks.

While other options mention valid considerations, they do not address the core function of sealing joints in the context of HVAC efficiency. For instance, enhancing aesthetic appeal or creating a barrier against pests does not directly relate to the performance and functionality of the air distribution system in a significant way, and ease of disassembly is less critical compared to the energy implications of air leaks.