Are my electric bills too high because of air leaks in my house or is the electric company charging me too much?
The most common source of air leaks come from the floors, walls and ceiling (35%). Ductwork, the fireplace and plumbing penetrations come in as the second most common air source at 15% – 20%. Air leaks are an obvious and costly problem. Out goes all the cool air into the summer heat or all that warm air into the cold in January! It’s not just leaks around windows and doors, though – critters can make hidden holes that let out a lot of energy.
Insulating your house is also one of the best things you can do to reduce heating and cooling costs.