Research on Issues of Existing Residential Buildings Energy-Efficient Retrofitting during China's "Twelfth Five-Year" Period

In 2008, China launched existing residential buildings energy-saving retrofitting in northern heating areas and planned to retrofit 150 million square meters of existing residential buildings during 2008-2010, which has achieved good economic and social benefits. We have conducted in-depth research and investigation on buildings energy-saving retrofitting during 2008-2010 and made summarizing evaluation on the finished existing retrofitting work through questionnaires, field research and seminars and other forms. This paper analyzes several key issues about retrofitting of existing residential buildings in the questionnaire and puts forward opinions on such work during the "Twelfth Five-year" period.