Roof Turbo Ventilator A roof turbo ventilator is a type of ventilation device installed on the roof of a building to facilitate air circulation and ventilation. It operates on the principle of natural wind energy and the stack effect to remove hot and stale air from the building and replace it with fresh air from outside. The turbo ventilator typically consists of a spinning turbine or fan-like structure that rotates with the slightest breeze or temperature difference. As it rotates, it creates a negative pressure zone within the building, drawing out hot air, moisture, odors, and pollutants. This process helps in maintaining a comfortable indoor environment, reducing humidity levels, and preventing the buildup of harmful gases.