Exterior, Doors & Windows

Use weather stripping around doors to prevent cold air from entering the home & caulk gaps in the windows with a clear caulking compound.

Use a draft snake at the base of drafty doors, or, better yet, replace the door sweep to make it more airtight.

Inspect exterior for cracks & exposed entry point around pipes & seal them up.

Replace cracked glass in windows.

Protect window wells if your house has them by covering them with plastic shields.

Switch out summer screens and replace with glass replacements in doors. If you have storm windows, install them too.

Window air conditioners should be removed, stored or covered so the heat in the house can't escape. You don't need to put a cover over a free-standing central air conditioner.