We’ve got a 1280sf (32×40) room above a garage, currently heated by a gas forced-air furnace and AC. The room is completely open (no dividing walls).We’d like to add a… We’ve got a 1280sf (32×40) room above a garage, currently heated by a gas forced-air furnace and AC. The room is completely open (no dividing walls).We’d like to add a…Read MoreGreenBuildingAdvisor

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