Another check on your house includes the drafty windows.
Did you know that a 1/8th of an inch crack all the way around a doorway creates the same air loss as a 6 inch square hole in the middle of your door?
Properly sealing up your windows and doorways using weather-stripping eliminates drafts and keeps the heated or conditioned air you pay for from escaping. There are many options available for homeowners to do this yourself.
Check out the Department of Energy for more information on the different types and materials of weather-stripping.
Here’s a trick to test whether you need to invest in weather-stripping: close a sheet of paper in a door or window. If you can pull it out without ripping the paper, you are losing energy.