How architecture changes indoor temperatures

Twenty-two degrees Celsius is a pleasant indoor temperature, and in our era of urbanisation it’s become a global standard. But it means using up an absurd amount of energy. When the climate is hot and humid, we cool our buildings massively; and in the colder seasons, we turn up the heating. The Zurich-based architect Sascha Roesler shakes his head when he thinks about it. “We have to ask radical, critical questions about this specific architectural legacy of the 20th century – namely the idea that the indoor climate of a building has to be thermally separate from the outdoor climate”. Roesler is currently an SNSF Professor of architecture and urbanism at the School of Architecture of the Università della Svizzera italiana (USI) in Mendrisio. His aim is to find construction methods that exist in a state of exchange with the environment. Because “in previous centuries, these transitions were fluid”.