What is the minimum distance an exhaust opening should be from a door or operable window?

The minimum distance an exhaust opening should be from a door or operable window is 3 feet to ensure proper ventilation and to prevent the mixing of exhaust air with fresh air. This distance helps to minimize the potential for exhaust fumes to re-enter the building through open doors or windows, which is crucial for maintaining indoor air quality and ensuring the safety of occupants. By adhering to this guideline, the design promotes effective airflow while reducing the risk of harmful pollutants being drawn back inside, thereby contributing to a healthier living environment.