How Does It Work?

What is Geothermal and How Does it Work?

This was a great question that a friend of mine asked.  With my project, Geothermal uses the ground to Heat and Cool the house.  It sounds weird; but, essentially this is what it is. 

Here is a quick example of what this means. 
 
Let’s say the temperature eight feet underground is a nice 55 degrees Fahrenheit.  Let’s also say that it is summer and the outside temperature is 92 degrees.  If I could use a simple fan to tap into the ground temperature of 55 degrees and get it into the house, I could cool the house very inexpensively.
 
Let’s say that it is winter and the outside temperature is 20 degrees, then the 55 degree ground temperature will help heat the house a lot; but, not completely.  Geo systems have a way of using that 55 degrees to “extract” the rest of the heat out of it, in order to warm the house very nicely. 
 
So….Geos use the temperature of the ground to Heat and Cool the house.   They use the temperature of the ground to "assist" them to Heat and Cool. 
 
There is a lot that goes into this; but, the concepts are fairly easy to understand.