It is estimated that sealing holes around doors, windows, pipes and ducts can save as much as 10% on your heating bill.
One of the main ways to do this is to
install weather striping or other forms of insulation around doorways to stop cold air from entering the home.
Jamb-up weather striping can be used on wooden, exterior doors. They are mounted on the two sides and top of the door frame so the rubber side just touches the door. You can install a
door sweep on the bottom of exterior doors. This should complete the seal around the door. For an extra seal, use
self-adhesive weather striping just inside the door jamb where the door and jamb come together.
For metal doors, check the
rubber gaskets and replace if necessary.
As a winter reminder, remember to disconnect water hoses so that they don't cause the faucets and pipes to freeze and crack. If there are interior shut off valves, turn them off and drain the remaining water. You can also cover the faucets using a
faucet insulation kit.
Insulating pipes in colder areas by applying
heat tape or
thermostat controlled heat cables around them.
Source: Article by Sam McDonald titled "Weather striping can stop the doorway air leaks"