When the thermometer starts to drop, drafty windows can make it hard to keep your home warm—and can send your energy bills soaring. Sealing drafty windows is an important part of winterizing your home ...

Add Yahoo as a preferred source to see more of our stories on Google. BanksPhotos/Getty Images Poorly sealed windows allow heat to enter your home during the summer and cool drafts during the winter.

Hold it near the window's seal and move it around. Whenever it moves past a drafty spot, the flame or smoke trail will bow. Now, it's important not to stop once you find a draft; if there's a fault in ...