This is the time of year when we start hearing a bunch of tips about how to make our homes more energy efficient and comfortable.  There's a lot of advice thrown around about weatherstripping doors and caulking windows which may or may not be the best idea for your home.  Before you do any of that,you should read this article from ACCA.

http://www.ie3media.com/2-reasons-not-caulk-windows-weatherstrip-doors/