What is the primary purpose of ventilation air?

The primary purpose of ventilation air is to replenish indoor air quality. This is crucial in maintaining a healthy and comfortable indoor environment. Proper ventilation helps to dilute and remove indoor pollutants such as carbon dioxide, volatile organic compounds, and other contaminants that can accumulate in tightly sealed spaces. By introducing fresh outdoor air into a building, ventilation ensures that occupants have access to air that is free from excess humidity, smoke, odors, and other harmful substances.

Effective ventilation systems are designed to maintain a balance between the indoor and outdoor air, ensuring that adequate quantities of fresh air are circulated throughout the space. This significantly contributes to the overall well-being of the occupants by improving respiratory health and reducing the risk of mold growth and other air quality issues. The importance of ventilation in sustaining good air quality is recognized in building codes and standards, which emphasize the necessity of proper ventilation in any mechanical system design.