In this study, after applying passive and active remodeling technologies to firefighting facilities, we analyzed their energy use characteristics by analyzing tenant satisfaction and energy use patterns. According to the satisfaction survey, occupants were most satisfied with the use of new and renewable energy-based hot water among the remodeling elements and the building insulation performance. According to the seasonal energy use analysis, electricity use increased in winter compared to that before remodeling owing to the use of air conditioning and heating, and electricity use decreased in summer compared to that before remodeling owing to better electric heat pump efficiency. By analyzing the 24 h energy use patterns, we found different energy use patterns according to the characteristics of the space based on the daily schedule of firefighters. Based on this, firefighting facilities are characterized by high energy use for seasonal air conditioning and heating. Therefore, when remodeling firefighting facilities in the future, designing them by prioritizing air conditioning efficiency, hot water supply, and insulation performance is necessary.