Mixed mode ventilation allow reduction of the reliance in mechanical ventilation and reduce energy cost and environmental impacts, both in countries with cold and warm countries (Hybrid Ventilation Centre, 2002).
Studies shows that the life cycle costs for mixed-mode ventilated buildings are often lower than for reference buildings, with varying initial, operating and maintenance costs. The installation cost of such buildings is approximately 20-25% of the total building cost (Hybrid Ventilation Centre, 2002).
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