The big expense is the wells. Most systems when properly designed will require 3 to 4 wells drilled and then they have to be backfilled with bentonite ($$$). If DNR finds out with out permits then big fines. best is a ground source heat pump with built in a/c. no outside compressor, all heat is returned to the well and the side effect is you can get free hot water. Friend has a 2500 sf house and his electric bill runs $80. per month all year long. He has had this since 1992 so the system has paid for itself after 10 years. 2" pipe with return down each well about 200' each.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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