BS>Is any one familar with the advantages or disadvantages of ground source
  >heating? It seems to me that this is the way to go in new construction, I
  >may be a little partial since it is my job to drill the boreholes. But I 
o
  >understand this type of heating and A/C will pay for itself in just a few
  >short years.Fossil fuel electric companys will tell you different though.
  >Just looking for input pro or con.
Bob, at 8' below the surface the tempreture is 55 or 57 degrees F, depending
upon Winter or Summer.  This would seem to work fine for both Summer and
Winter, if a person had a large enough area.  I certainly do not know the
math for this, but as you draw air through the holes it would tend to bring
them toward the outside air tempreture.
Sounds like you might know, how long a "borehole" would it require to cool
a 2000 Square foot house to 72 Degrees F when the outside air tempreture
is 100 F.  Also how many acres would be required for this?
Thanks,  Lorin Potter
 -- SPEED 1.40 #1891: Please continue petty bickering, my children are grown.
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