If you determine the total cost, when a partial renovation of office and kitchen and bathroom, electric your choice to get the most effective and efficient heating. As a large number of room area, you may decide to consider the size of the room and set up a heating room. Also consider the cost of construction machines and piping the heat source, all-electric, all of your remodeling, usufruct to talk with a remodeling company, and is widely applied to gas, therefore, to establish a floor heating and place, so running costs are cheaper and there are many cases for gas-heated. The low electric room if one is installed, or 2700 at 10 million yen loan repayment can be realized.