What is the impact of improper air sealing in a building?

Improper air sealing in a building can significantly compromise air quality. This occurs because air leaks can allow unfiltered outdoor air to enter the building, bringing in pollutants, allergens, and other harmful particles. These breaches often promote drafts and temperature fluctuations that can make indoor spaces uncomfortable and may affect the health of the occupants. Additionally, poor air sealing can lead to the accumulation of indoor air contaminants, particularly when ventilation systems cannot effectively manage or circulate the air.

While the other options may suggest positive outcomes, they do not align with the realities of improper air sealing. Increased energy efficiency typically results from effective air sealing, while temperature control is beneficially affected by proper sealing, as it minimizes drafts. Increased moisture buildup can occur, but it stems from a variety of factors, including lack of ventilation, rather than just improper sealing itself. Thus, the most direct and critical consequence of poor air sealing is the resultant decline in indoor air quality.