Energy bills — particularly heating costs — remain a major worry for millions of households right now. Obviously, the better insulated your property is, the more effectively your heating system can ...

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.

Glass is a poor insulator, and windows are a prime entry point for cold or hot air. Especially if they are dated or have not been properly sealed the outside air will seep into the indoor conditioned ...