Barack Obama is clearly passionate about sealing air leaks and insulating:
"Here's what's sexy about it: saving money! Think about it this way, if you haven't upgraded your home yet, it's not just heat or cool air escaping, it's energy and money you're wasting. If you saw $20 bills floating through the window, up into the atmosphere, you'd try to figure out how you're gonna keep that. But that's exactly what's happening because of lack of efficiency in our buildings!"
According to the US Department of Energy: Sealing and insulating the "envelope" or "shell" of your home — its outer walls, ceiling, windows, doors, and floors — is often the most cost effective way to improve energy efficiency and comfort.
See and hear President Obama's passion for energy efficiency here.