It is a project of significant energy upgrading of the Hospital of Tripoli which includes sub-projects for the upgrading of heating/cooling/air conditioning/lighting and hot water production facilities.This operation achieves an oil saving of up to 49.3 % and electricity by 11.3 % as well as a reduction in CO2 emissions by 21.2 %. Also, the quality and reliability of heating/cooling/air conditioning systems is radically upgraded.With this work, the conditions of comfort and hygiene are greatly upgraded, since ventilation/ventilation devices are installed in all the rooms of the Hospital which will continuously provide fresh air and improve air quality.