In this paper, the energy consumption of the electrified housing located in Hiroshima area was grasped, and the relationships between the energy consumption by hot water supply system and the housing attributes of residents were examined. To predict the annual and monthly energy consumption, the Quantity Theory Cluster I was applied. Based on the analysis, the factors affecting to the energy consumption were clarified, and the influence of energy consumption was compared among the factors.
As for the predictive equations for energy consumption, the multiple correlation coefficients of annual value and monthly values were explained with 0.852 and 0.740-0.827 respectively. Also, it was clarified that “types of water heater&ｒdquo; had major influence on energy consumption throughout a year, and “number of frequency for filling hot water into a bathtub in winter&ｒdquo; and “age of the first child of the family&ｒdquo; had influence in winter season.
