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Have you guys run a cost comparison between natural gas or propane vs the geothermal (+electrical, etc)?
What are the total installed cost?
Operating cos per yr on average?
Eg. We installed a 92% eff propane furnace in our 850 sf guest house for about $4000, complete. Propane will probably cost 500-700/yr. electrical for the blower, maybe $100/yr.
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