The predesign optimisation of the total energy consumption has been proposed to comprehensively assess the thermal performance of multilayered wall assemblies, using the minimisation of the total embodied and operational energy as the goal function. The proposed model considers physical characteristics, such as internal areal heat capacity, decrement factor, embodied and operational energy, through the 50-year lifespan of the particular multilayered assembly. Current research focuses on defining the best wall performance solely based on the wall material's physical parameters, its dynamic characteristics under ISO 13786 and the total energy consumption value.

The performed numerical research has revealed that, in terms of the total energy figures, the AAC wall configuration was the most energy-efficient, with an energy reduction possibility of 36.76%, while the least energy-efficient in terms of the total energy was the wall from wood-chip cement-bonded block, with an energy reduction possibility of 3.28% only.