Ventilation design refers to the process of planning and implementing systems that ensure adequate air circulation within buildings. This involves determining the right amount of fresh air needed, removing stale air, and controlling humidity levels. Proper ventilation helps maintain indoor air quality, which is essential for the health and comfort of occupants. Key components of ventilation design include air ducts, fans, and filters. These elements work together to distribute air evenly throughout a space. Effective ventilation design can also enhance energy efficiency, reducing heating and cooling costs while promoting a healthier indoor environment.