Weatherizing your home is one of the best ways to stop a heating problem before it begins. In the early autumn homeowners should look for cracks and holes in their foundation, doorways and windows. To prevent the cold weather from getting inside their house in the first place, homeowners can apply weatherstripping or caulk to particularly drafty areas. Caulking and weatherstripping gaps in doorways and windows has been found to pay for itself in energy savings within a year.