Following the 21st Conference of the Parties (COP 21), the 2015 Paris Agreement on
Climae Change strengthens the attempts of the European Union to decarbonize the building
sector and to facilitate the transition from fossil fuels towards cleaner energy. The last
version of the Energy Performance of Buildings Directive 2018/844/EU is human centric and
requires the integration of indoor environmental quality assessment, simultaneously with
energy performance and cost-optimal requirements. In other words, efforts to improve the …