Discover why geothermal heat pumps are the most energy-efficient technology for heating and cooling, and how all homes-new or retrofit, in hot or cold climates-can use this reliable, silent, non-polluting way of extracting free energy from the earth. Book jacket.
The Smart Guide to Geothermal
PixyJack Press, Incorporated
How to Harvest Earth's Free Energy for Heating and Cooling
Education & Reference