The system component that draws outside atmospheric air into an air conditioning unit is a portal facilitating the introduction of ventilation. This point of entry allows for the replenishment of interior environments with external air. For example, in a building with a central air conditioning system, this aperture would be the designated opening through which outdoor air is drawn into the system for circulation.
Introduction of outside air is paramount for maintaining acceptable indoor air quality. It dilutes internally generated pollutants, such as carbon dioxide, volatile organic compounds (VOCs), and other airborne contaminants, thereby reducing the risk of health issues and improving occupant comfort. Historically, structures relied on natural ventilation; however, modern, tightly sealed buildings necessitate a controlled, engineered method for delivering sufficient quantities of outdoor air.
