Geothermal Heat Pump (Popularity: )
http://www.geothermalheaters.com TERRASource provides year-round efficient heating and cooling for home/office by using the earth as a heat source during the winter, and conversely as a cooling source during the summer months. ...
Valutech Online (Popularity: )
http://www.valutechinc.com Heat exchangers for heating pools and recovering heat in geothermal applications. Heat exchangers, steam traps and check valves for the processing industry.