Ventilation air is used for providing which of the following?

Ventilation air plays a crucial role in ensuring acceptable indoor air quality. This is achieved by introducing fresh outdoor air into a building, which dilutes and displaces indoor pollutants, allergens, and excess humidity, thereby reducing the concentration of harmful substances in the air we breathe. Furthermore, adequate ventilation helps to maintain a comfortable atmosphere by balancing temperature and humidity levels, contributing to an environment where occupants can thrive.

The focus on indoor air quality is vital in residential and commercial spaces, as pollutants can accumulate from various sources, including construction materials, cleaning agents, and human activities. Effective ventilation systems improve health outcomes by reducing the risk of respiratory issues and promoting overall well-being for the inhabitants. Hence, the correct identification of acceptable indoor air quality as the purpose of ventilation air underscores its importance in modern building design and occupancy standards.