Spinaway Roof Ventilator

The spinaway roof ventilator system is made up of a fan that is connected to ducts from various rooms in the home. The ducts carry stale air from the rooms and the fan expels this air to the outside. The home then becomes depressurized and fresh air replaces the stale air through vents and cracks in the home. The exhaust ventilation system is suitable in cold climates and it is simple to install and is not very expensive. The supply home ventilation system forces air into the home by use of a fan and this increases the pressure in the home. The stale air then has to find its way out through fan ducts, the bath and any cracks and holes in the building. A spinaway roof ventilator absorbs the heat from the stale air and uses it to warm the fresh air coming in from the outside. One fan brings in fresh air from the outside while another fan expels stale air to the outside. The system has a unit where the exchange of heat from the stale air to the fresh air takes place should be noted that the smooth flow of the ventilation pipes and hoses and proper air circulation. For More Info:- https://roofquip.co.nz/skyaxis-wind-driven-ventilators/
https://eyonaa.com/post/51406_roof-ventilation-in-nz-roof-ventilation-nz-or-ventelation-systems-nz-are-crucial.html