An exhaust fan in a is a ventilation device designed to remove moisture, odours, and airborne particles. It helps prevent mold and mildew by reducing humidity levels after showers and baths. Typically installed in the ceiling or wall, the fan draws in moist air and expels it outside through a duct. This ensures fresh air circulation, improving indoor air quality and maintaining a comfortable environment. An essential feature in modern bathrooms, exhaust fans also help protect the structural integrity of your home by minimizing moisture-related damage.