“…For example, the RSM simulations of energy consumption in education buildings [15,16,21] and offices [17] identified insulation thickness of the internal [16,21] and external walls [15,21], the heat transmission coefficient of the roofs [15], solar heat gain coefficient (SHGC) [15][16][17]21] and heat transfer coefficient of the external windows [15][16][17]22], roof heat transfer coefficient [16], internal and external shading coefficients [17,21] and window to wall ratio [15] as the key parameters affecting building energy efficiency. Similarly, for residential buildings the RSM simulations [18][19][20] pointed out heating and cooling system set-points [18,20], insulation thickness [18], SHGC [19], air infiltration rate [19], and insulation heat transfer coefficient [18][19][20] as the main contributors to energy savings.…”