Motorized Roof Exhaust Fan Manufacturer & Supplier in Ahmedabad Gujarat India. A motorized roof exhaust fan is a powered ventilation fan installed on the roof of a building to remove stale air, heat, moisture, smoke, fumes, or odors from the interior space. These fans are commonly used in commercial buildings, industrial facilities, workshops, kitchens, garages, and HVAC systems to improve air quality and help control temperature and humidity. Motorized roof exhaust fans typically include: Electric motor — drives the fan blades. Fan assembly / impeller — forces air out of the building. Housing & roof curb adapter — seals and mounts the fan to the roof. Controls — on/off switches, thermostats, or integration with building automation. How it works: The motor spins the blades inside the housing. This creates airflow that pulls indoor air up and out through the roof. In many setups, fresh air enters through vents or louvers to balance airflow.