What is the primary role of ventilation in an HVAC system?

The primary role of ventilation in an HVAC system is to provide fresh air and improve indoor air quality. Ventilation is essential for removing stale air, odors, and other pollutants from indoor environments while introducing fresh outside air. This process not only helps to regulate temperature and humidity but also significantly impacts the health and comfort of occupants by ensuring adequate oxygen levels and reducing harmful contaminants.

Fresh air intake is crucial because it contributes to the overall airflow in a building, ensuring that the air remains clean and breathable. Additionally, improved indoor air quality can reduce the risk of respiratory issues and other health problems associated with poor air circulation and buildup of harmful substances.

While cooling air, circulating hot air, and filtering dust are important aspects of an HVAC system, they are not the primary function of ventilation. Cooling and heating are part of temperature control, and filtering is a separate function typically performed by individual air filtration systems or components within the HVAC system. Therefore, ventilation's main focus is on air quality and the introduction of fresh air into living spaces.