I. Introduction
Decarbonization is an aim that EU wants to reach within 2050. Given that around the 36% of the total CO2 emissions derive from the current European built environment’s consumption, several Standards and decrees have been established to solve this issue. One of these is the EU 2018/844 Directive [1] which enforces the member States’ duty to take action against private and civil building consumption. In the control of HVAC systems there is room for large investments in buildings and energy savings.