Residenza I Girasoli in Castenaso, Italy, features two similar buildings designed with regional aesthetics and equipped with modern energy-efficient technologies.

The structures include large balconies and use brick and concrete. They incorporate a Nilan EXRG HVAC system with geothermal heating and cooling, complemented by air conditioning.

The buildings aim for Plus Energy status, generating surplus energy via photovoltaic panels and a ground source heat pump. Active energy-saving measures, such as smart shading and LED lighting, enhance efficiency. The well-insulated design minimises heat loss and gain, while careful ventilation prevents mould.

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