Ventilation control refers to the management of air flow within a building or space to ensure a healthy and comfortable environment. It involves regulating the amount of fresh air entering and stale air exiting, which helps maintain indoor air quality. Effective ventilation control can reduce pollutants, humidity, and odors, contributing to overall well-being. There are various methods of ventilation control, including natural ventilation, mechanical systems, and hybrid approaches. HVAC (Heating, Ventilation, and Air Conditioning) systems are commonly used to automate this process, allowing for precise adjustments based on occupancy and air quality levels. Proper ventilation control is essential for energy efficiency and occupant comfort.