Exhaust fan, a type of air conditioning device that is driven by an electric motor to rotate the airflow to drive airflow to exchange indoor and outdoor air. Also known as the ventilation fan. The purpose of the exhaust is to remove the dirty air in the room, adjust the temperature, humidity and sensory effect, so as to achieve ventilation and ventilation, cooling effect. Exhaust fans are widely used in homes and public places.

The exhaust fan has the characteristics of low investment cost, large air volume, low noise, low energy consumption, stable operation, long service life and high efficiency.