Aug 28, 2012

Geothermal Heat Pump Air Conditioning System Launched

Corona Corp., a heating appliance and housing equipment manufacturer and
wholesaler in Japan, announced on April 9, 2012, the planned release of
GeoSIS, a geothermal heat pump air conditioning system by the end of
June 2012. The system uses heat stored in the ground for home heating
and cooling as the temperature in the ground is more stable than it is
in the air.
http://www.japanfs.org/en/pages/032173.html