摘要: Energy efficiency can be defined as utilizing minimum amounts of energy for heating, cooling, lighting and the equipment that is required to maintain conducive conditions in a building [1,2]. An important factor impacting not only envelope but also management within premises. The amount consumed varies depending on design building, available electrical systems how they operate. heating cooling consume most building; however control system such programmable thermostats significantly reduce use these systems. Some buildings zone systems, which unused areas building. In commercial buildings, integrated space water cooling/ provide best approach energy-efficient [3]. audits conducted useful way determining efficient what improvements made enhance its efficiency. Tests should undertaken ensure well equipments lightings work effectively efficiently.