Geothermal Heat Pump

Geothermal installation on University of Michigan's North Campus

Over the last few weeks, we've noticed lots of activity near the Ann Arbor Farmerrs Market.  Craig later spied a sign explaining that a geothermal heat pump system installation was underway.

Wikipedia has a good explanation of geothermal here http://en.wikipedia.org/wiki/Geothermal_heat_pump

Astrid