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.
Find more info at GeoPowerful.com
The Smart Guide to Geothermal:
How to Harvest Earth's Free Energy for Heating and Cooling
Donal B. Lloyd
5.5 x 8.5, 192 pages