Did you know that, according to the U.S. Department of Energy, 10% of air leaks out of the average house through the windows? Also, an estimate by Energy Star states that homeowners could save an annual 7-15% on their energy bills by replacing their own windows with more efficient models.
If you live in an old home, it might not be possible to replace all of the windows in your home. However, there are still many simple and cheap things that you can do that will help to insulate your windows.
Apply Rubber Weather Sealing
At your local hardware store you will be able to find some inexpensive strips of rubber weather sealing that is self adhesive. You can cut a long strip down to fit your window and then peel it off and stick it to the frame in order