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Montana | I have friends with the geothermal heat and they really like it. I got an air to air heat exchange system and it works great for heating when temps are above 40 and then the propane kicks in for colder. It works great for forced air air conditioning in summer. I had a big old condenser heating and cooling unit outside but it seems very good. Was about 8000 dollars to add to our Coleman furnace. | |
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geothermal heat pump
