The energy rehabilitation program of the residence has been designed in a global approach. It includes the replacement of heating, switching to intelligently driven radiant panels, replacement of exterior joinery and front door, installation of a hygro A VMC and installation of ITE on certain facades and loggia walls. The energy gain will be significant, with a change from class E to C, which will result in lower charges for tenants without rent increases. This project was carried out in consultation with tenants who will receive at the end of the work an awareness on sustainable development, a guide on eco gestures, water savings...