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coast of Maine | Here,the most costly is anything electrical.Second most costly propane.Very little Nat gas here.So basing efficiency on cost it would be wood or #2 oil.Actually basing it on energy efficiency it would be a heat pump.The combo of heat pump warming a fluid to use in a heated floor would be neat,IDK if they have.Our governor knows best and wants us to raise electrical rates to 50 cents KW. | |
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home heat machinery