We share the scientific meaning of polyurethane insulation efficiency to cope with global warming and the decrease in carbon resources. It will help us select better blowing agents for the future in terms of global warming and resource-saving. Reduction of global warming and carbon resources saving are our top priority issues for the future generations. According to the concept of radiative forcing, a linear relationship can be found between global mean surface temperature change (ΔTS) and radiative forcing (RF): ΔTS = λRF, where λ is the climate sensitivity. The effects of GHGs in the atmosphere including foam blowing agents on the global temperature rise were evaluated. This evaluation was based on the observed mixing ratio of each GHG and the past, present and future of warming due to each GHG was analyzed, then this was applied to the analysis of the warming due to each blowing agent. Further, along with the value of new indicators, CEWN and CETN, the index value obtained from this evaluation was compared with GWP value, for each GHG. By means of these indicators, the comparison among blowing agents were carried out. Recently, the importance of carbon resources is growing when considering the selection of technologies. We present the comparison of blowing agents from the viewpoint of carbon resources.
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