Efficient heating and cooling technologies with little or no carbon dioxide within residential, commercial and public buildings can dramatically reduce the world energy consumption and thereby considerable saving can be achieved. This can generate positive feedback effects on energy prices, global warming and life quality. This will promote more sustainable developments worldwide.
However, strong policy and awareness actions on all levels, sectors and stakeholders are needed to bring coherent solutions in the fragmented building sectors. In this context, increased technology RD&D is necessary to bring about new and affordable solutions that are suitable for different climate zones along with the environmental, cultural, social and economic conditions during the life-cycle financial benefits.