What type of air is a combination of outdoor and transfer air meant to replenish exhausted air?

Makeup air is specifically designed to replace air that has been exhausted from a space, thereby balancing the air pressure and ensuring adequate ventilation. This type of air combines outdoor air with transfer air, which is air drawn from adjacent spaces within the building. The purpose of makeup air is to maintain a desired indoor air quality and pressure, particularly in areas where mechanical systems remove air for processes like exhaust or ventilation. By incorporating both outdoor and transfer air, makeup air helps to mitigate any negative effects of creating a vacuum that can occur when air is removed, ensuring a consistent flow and overall comfort within the environment.