Al: We're gonna use this generator to create smoke so we can then see our leaks. [Tim blows smoke in Al's face] Thank you, Tim. Now have you sealed up the house, all the doors, windows, vents?
Tim: You bet I have.
Al: Then we're ready to see leaks.
Tim: But first off, let's make sure that the fireplace flue is shut. A good way to remember that is to close the flue, pull towards you. Push away, make fire today. My grandfather taught me that.