The project is planned with energy renovation covering five construction measures for improving the thermal protective envelope (replacing part of the external joinery, thermal insulation of the ceiling towards an unheated attic, thermal insulation of external walls, thermal insulation of the floor on the ground, thermal insulation of the sloping roof above heated space), and two engine engineering measures (introducing a high efficiency heating system and introducing a heat pump), all with a view to reducing energy input and harmful CO2 emissions.