This study empirically explores the determinants of household electricity saving behavior based on a sample of Japanese households. Our study makes four contributions. First, we examine the short‐term saving action of making efforts, the medium‐term saving action of replacing appliances, and the long‐term saving action of undertaking renovations. Second, we consider not only the physical characteristics of households but also behavioral characteristics, such as their understanding of the importance of energy saving and willingness to save energy. Third, in our analysis, we assume that appliances and housing facilities have the electricity‐saving capability and service‐providing capability. While previous studies focus on the former, consumers in reality consider both capabilities. Fourth, we consider the optimization by households and include broad types of appliances and renovations. Using a multivariate ordered probit model with data on 518 Japanese households in 2012, we obtain the following results. First, in addition to the demand response, the effort level is determined by behavioral, rather than by physical characteristics. Second, the motivation behind appliance replacement is durability, rather than electricity‐saving and service‐providing capabilities. Third, appliance replacement is enhanced by an understanding of the importance of energy saving, rather than by the willingness to save energy. Households can replace appliances because of social pressure, even if they are not so concerned about saving energy. Fourth, households are willing to renovate housing facilities even though they pay a higher cost for the greater saving capability rather than for the service‐providing capability. However, such renovation is not influenced by internal incentives, but by physical aspects of the house, such as size, age, and type.