The air vent turbine ventilator operates by utilizing the velocity energy of the wind to induce airflow by centrifugal action. The centrifugal force caused by the spinning vanes creates a region of low-pressure area, which draws air out through the air vent turbine ventilator. Air drawn out by the ATCO air vent turbine ventilator is continuously replaces by fresh air from the outside. The slightest breeze will cause the ATCO air vent turbine ventilator to spin and even after the breeze has stopped, the flywheel effect of the rotor cage will use its stored energy to continuously remove air giving rise to ventilation. Suction is maintained even at low wind velocities.