This paper is aiming to analyze the energy consumption of a building located in Satra, GAVLIE. Computer simulations of multizone airflow and thermal transport are performed in order to analyze the indoor climate and at the same time reduce the use of energy in the present building.

At the same time, economic factors need to be considered based on energy-saving. Via use economic analysis tool to determine the feasibility of the energy-saving program in order to make sure the program getting recovery. With energy prices going up and increasing environmental awareness, designing an energy-efficient building is more important than ever.