Seal your home
Weatherstripping and caulking are probably the least expensive, most effective ways to save energy in the winter. Check around doors and windows for leaks and drafts. Add weatherstripping and caulk any holes where heat can escape. Make sure the doors seal properly.
Plug those little leaks
Electric wall plugs and switches can allow cold air to enter. Purchase simple-to-install, foam gaskets that fit behind the switch plate and effectively prevent leaks.
Check your heating system
Get a routine maintenance and inspection of your heating system to make sure it is in good working order.
Change the filter
Check furnace filters. Be sure to clean or replace your system’s air filter. At a minimum, change the filter every three months; a dirty filter clogs the system, making the system work harder to keep you warm.
Put it in reverse
Reverse the switch on your ceiling fans so they blow upward, toward the ceiling.
Check your insulation
Insulate your attic. In an older home, that can be the most cost-efficient way to cut home heating costs. Before energy efficiency standards, homes were often built with little or no insulation. As a result, large amounts of heat can be lost through walls, floors, and ceilings.