[DebNJim B]

We winter in North GA where it still gets a bit chilly. We use heat more than a/c. Last winter was our first with this rig and I noticed masses of cold air coming from that return vent so I blocked it off. When we finally got a real cold night and all my plumbing froze in the basement I discovered a huge gap in the insulation to the outer wall. Once I filled that gap the pipes stopped freezing and the draft disappeared.