Although energy consumption for heating has been greatly reduced in many countries over the last few years, the total energy consumption in building is still large warrants a serious effort to obtain further reductions.

Task 13 is working on that goal by identifying, developing, and testing new and innovative concepts which have the potential for eliminating or minimizing the use of purchased energy in residential buildings. Also included are the use of solar energy in residential buildings while maintaining acceptable comfort levels. Emphasis is placed on innovation and long- range cost-effectiveness.