These guidelines consist of two parts and they should serve as a tool of comparison between the two professions that interact in the process of upgrading energy efficiency: the designer, who manages the process by identifying the solution he considers to be most appropriate to the individual situation among the various improvement possibilities, and the technicians of the Superintendence, who must verify the compliance with the constraints existing on the building.

The first part of the guidelines is dedicated to the technicians of the Superintendence and it contains the main general principles of energy saving, in the order to create a common ground of knowledge for a correct and quilified choice of interventions. 

The second part, only in italian, devoted mainly to designers, delves into the concepts related to the audit process and the improvement of energy efficiency in historic buildings; but of course it can also be used for existing buildings in general.