Here is a question for all the home owners in Nashua ,NH and surrounding town'sIn each room of your home there are areas that when you total them in there entirety it comes out to be approximately 5 feet in total space,that allows air to enter and heat or ac to exit think about having a 5 foot hole in    your  house!!!!!!!!!!!!!!   do you know where these areas are, I think you would be very surprised to find out. a infrared thermal energy survey will show you these and other areas where this  is happening and it will alsosave you money on caulking and other materials since you will know where to do these minor maintenance steps, give a call at 603-321-2160 if you have any questions or to schedule an IR survey.