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  1. J

    Will This Insert Overheat My Space?

    I have an 850 SF house up at about 4500 ft. elevation. It was built in the '70s with 2X4s and R12 insulation. I recently replaced all windows with double pane. The fireplace is in a 15X24 open room with a 14' vaulted ceiling three medium sized windows ans a 60" sliding glass door. There is a...