Interior maintenance “Heating and cooling amount to 47% of the energy costs in your home. Proper sealing and insulation can save up to 20% on heating and cooling costs, or up to 10% on your total annual energy bill,” says Katie Cody, spokeswoman for Lowe’s. “Air leaks from windows and doors are easy to find by moving your hand around the frame. Applying weather stripping and caulk to these areas will help cut down on drafts.” ​

Have your heating system checked by a licensed heating contractor. Heating systems will use fuel more efficiently, last longer and have fewer problems if properly serviced.

Get your woodstove and fireplace in working order. Gary Webster, Creative Director of Travis Industries, suggests that you examine your wood stove or fireplace insert’s door gasket for a tight seal. Also clean and inspect the glass door for cracks and have the chimney cleaned by a licensed chimney sweep. “A clogged chimney poses the risk of a chimney fire, which can be ignited by burning creosote—a combination of wood tar, organic vapors and moisture buildup,” says Webster.

Change the direction of your ceiling fan to create an upward draft that redistributes warm air from the ceiling.

Test and change the batteries in your smoke and carbon dioxide detectors and keep extra household batteries on hand.

Check basement windows for drafts, loose frames or cracked panes.

Vacuum internal parts of air conditioners. Remove units from windows or wrap outside box with an approved tarp or plastic air conditioner cover in order to prevent rusting of vital parts.

Clean your humidifiers regularly during the heating season. Bacteria and spores can develop in a dirty water tank resulting in unclean moisture misting out into your room.