Winterizing your windows is a good idea. It helps you save energy and is cost effective. It can be pricey to hire a professional, but in this tutorial, you will learn how to insulate your windows yourself with a window insulation kit. Window insulation kits are easy and cheap alternatives to replacing your windows for the wintertime. So, in the colder months this year, try this method and stay a little bit warmer. You will be happy when you see your lower heating bills!