22 April 2020
This article describes trends in the shipments of room air conditioners, commercial air conditioners, and domestic heat pump water heaters, which are typical products in the Japanese heat pump market, over the past 20 years. Recent product technology trends are also described. In addition, the trends in use of industrial heat pumps is overviewed based upon information obtained from HPT Annex 48 activities. Finally, the role of heat pumps in Japan’s energy conservation policy and the direction of technology developments by sector in energy conservation technology development strategies are described.