An increasing number of consumers and investors seek heating systems that are both sustainable and economical. Up to now, an international data and evaluation basis across all heating technologies has not been available, thus prohibiting a valid ecological and economic assessment of the available technologies. Such information is essential for manufacturers to carry out sustainable product development and also for selecting the optimal combination of different heating technologies. The international working group "Task 71- Life Cycle and Cost Assessment for Heating and Cooling Technologies" within the “Solar Heating and Cooling” program of the International Energy Agency now intends to close this gap by not only providing a methodology for comparison as well as uniform data formats but also by presenting reference heating systems and scenarios for different countries worldwide.
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