Wind Driven Ventilators (Rotating Cowls)

Wind driven ventilators, which use natural wind energy to extract indoor air through rooftops and chimneys, are environmentally friendly ventilation solutions that operate without electricity consumption. At HAVIKSAN, we offer wind driven ventilator systems for residential, commercial, and industrial buildings in various diameter options.

Their rotating blades, driven by wind, create negative pressure on chimneys and rooftops, expelling humid, odorous, and polluted air from the interior. Since their moving parts are manufactured from stainless steel and aluminum materials, they are resistant to outdoor weather conditions. With no electrical connection required, their operating cost is zero.

Models suitable for different chimney sizes and ventilation capacities are available in Ø100, Ø130, Ø150, and Ø200 mm diameter options. They have a wide range of applications from chimney ventilation in residences to roof exhaust in industrial facilities.