Windows can have a major impact on your home's energy efficiency, and, as a result, your bills. Luckily, these two insulating ...

What you need to know: This is a nicely designed window film for those who want to spice up their homes a bit. What you’ll love: The easy-application static-cling method requires no adhesive.

Most home center stores sell it in small single-window kits or in large rolls. One of the best do-it-yourself window films is made by CP Films-Gila.