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12-03-2009, 08:32 PM #1
looking for geo thermol heat pump info
hello all
I found info on geo thermol heat pump loop length in this group befor. now I am ready to dig the trench now and cant find the info. can any one point me to a therad or a websight to to help me figure how long to make the loop? for waht its worth I am in the northern US, looking at 3 1/2 tons and using pex tubing for the loop.
Another concern I have is we have a lot of rock here so I plan to lay tubing in sand befor back filling. Is sand ok or is there some thing better for conducting heat?
Paul P
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