Energy saving windows are the best for saving Money by saving on heating a home.
Storm windows will reduce the lost of heat
Windows that are closed for a time,you can use window film.
Adding a humidifer will make the home feel wamer too.
One of the best things too do is adding insulation to the attic of the home.
By doing some of these things you can save two to three hundred dollars a year.
Don't just add the insulation to the loft! If you have a cavity wall then get that insulated as well!