GHP Taps Market for Summertime Electricity-saving in Japan

Demand for gas-enginedriven heat pumps (GHPs) in Japan has increased markedly since the Great East Japan Earthquake last year. GHPs are heat pump air conditioning and heating systems that have an outdoor unit compressor driven by a gas engine. Interest in using GHPs, which consume less power than electrically driven systems, in commercial air conditioning installations has grown as a way to contribute to leveling electricity demand.