Heating, ventilation, and air conditioning (HVAC) systems often incorporate the intake of external air as part of their operational design. This functionality allows for the introduction of fresh air into a building’s environment. For example, a system might draw in outside air to dilute indoor pollutants and maintain a healthier indoor air quality.
The inclusion of outside air intake is significant for several reasons. It can improve indoor air quality by reducing the concentration of carbon dioxide and other contaminants. Additionally, it plays a role in regulating humidity levels within a building. Historically, natural ventilation served this purpose, but modern HVAC systems provide a controlled and often more efficient means of achieving similar outcomes. Building codes frequently mandate minimum requirements for outside air ventilation to ensure occupant well-being.
