What is the primary purpose of ducts being sealed during construction?

The primary purpose of sealing ducts during construction is closely related to preventing air contamination, which is critical for maintaining a healthy indoor environment. When ducts are not properly sealed, unconditioned air, dust, pests, and other contaminants can enter the ductwork, leading to poor air quality. This can compromise the effectiveness of the heating, ventilation, and air conditioning (HVAC) system and ultimately affect the occupants' health.

In addition, while sealing ducts does play a role in improving energy efficiency by ensuring that heated or cooled air is not lost through leaks, the primary concern here focuses on the health implications and the protection of indoor air quality. With respect to aesthetics, sealing ducts does not have a direct contribution, as it is more about functionality rather than appearance. Similarly, while sealing may have some impact on noise pollution, the main goal is primarily health-focused rather than sound reduction.