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I burn wood for heat, but have been looking into geothermal as a main source. I would rather spend the upfront money on a unit that will save $ in the end, I just don't know if they have it all worked out, YET. I have been in caves in the dead of winter and the same in summer, the weather never changed in there. Until I can see the pay off, then it is me and my Stihl and trusty, rusty splitter saving on the heating bill.
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