At any place, buildings are one of the main sources of energy consumption, the European Union (EU) has been identified as the existing building stock is the biggest energy-saving potential of a single industry, <br>retrofitting existing buildings is widely considered to solve the energy crisis and climate change one helpful. <br>Report this post is for: <br>energy-efficient <br>HVAC (Heating Ventilation and Air Conditioning) <br>indoor air quality <br>comfort <br>as to explore other four indicators
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