What is a consequence of failing to manage air and moisture movement in a building?

Failing to manage air and moisture movement in a building can lead to significant issues such as potential damage and reduced structural integrity. When air leaks occur, moisture can infiltrate building materials. This excess moisture can promote the growth of mold and mildew, which can not only compromise the health of the occupants but also deteriorate materials such as wood and insulation. Additionally, structural components may weaken over time when exposed to excessive moisture, leading to costly repairs and, in severe cases, safety hazards due to compromised building stability.

In contrast, the other options suggest benefits that are less likely to occur if air and moisture are not managed properly. Increased energy efficiency, enhanced comfort for occupants, and improved air quality are all outcomes that result from effective air barrier management, not from failing to manage these elements. Therefore, option C is the accurate consequence of poor air and moisture management in building design and maintenance.