The purpose of this study is to discuss the energy-saving effects of residents' participation in apartment complexes through the imparting of relevant information and motivation. Therefore, this study compared the results of two separate surveys. Surveys developed based on the government guidelines were utilized to observe and compare residents' consciousness, knowledge and behaviors, before and after providing them with information and performing promotion activities The major findings are as follows: First, the residents' energy-saving consciousness, knowledge, and behavior improved after they were provided with relevant information and exposed to campaigns. Second, these factors improved further if residents had been previously exposed to such information and campaigns at their apartment complexes. Third, energy-saving activities driven by residents' participation instilled a sense of pride in their apartment complex. Hence, this study's examination and discussion of the energy-saving effects of apartment complexes is expected to be utilized as a framework and guideline for the creation of effective energy-saving manuals for apartment residents. (c) 2011 Elsevier B.V. All rights reserved.