Your Questions About Save Gas In Winter

John asks…Is it energy efficient to shut heat registers in areas that aren't being used?A family member strongly believes that closing the heat registers of rooms/areas that aren't being used is the best way to save on gas bills in the winter. I can almost agree if the room that isn't used can be closed. But what about common areas like the kitchen/dining room/living room? Is it really efficient to close the register in the kitchen and open the one in the dining room only, just because we

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