Recent market development of air source heat pumps in various countries in the world

The 1997 World Climate Summit in Kyoto, Japan established the reduction of greenhouse gases (GHG), achieving the goal of reducing greenhouse gases by at least 5% below 1990 levels between 2008 and 2012. In order to achieve the goal of the "Kyoto Protocol", there must be a change in energy utilization in the field of man-made environments that occupy most of the primary energy and most of the greenhouse gas emissions.