... requirements for heating is 11.3% for Athens and 6.1% for Thessaloniki. On the contrary, for the cooling period of the 1993-2002 decade, an increase of the energy demands of the building for both ... 20ºC for the winter period and 26ºC for the summer period. The rate of the ventilation was assumed equal to 0.5 ach except for the WC-bathrooms, where it was considered equal to 1.5 ach. The overall ... 34]. The energy calculations were performed for all the winter and summer months for the two cities, and the energy requirements of the building were calculated for heating and cooling with temperature...