I suggest a smoke pencil from Chimney Balloon, Janesville, WI for checking for air leaks and which way the air flow is going, in or out. If you check for where the heat is going and where the cold is coming in, you have a chance of correcting the energy losses you are enduring. If you wish suggestions on other energy and ventilation issues, call me or email me.
Larry Schultz
larry.schultz@kci.com
410-746-6768