Heating & Cooling
In most homes in this country, heating is the largest energy expense. In colder parts of the country, heating accounts for 36 percent or more of annual energy bills. Depending on where you live, reducing the amount of energy used for heating may be your most effective way to lower your home's energy bills.
Depending where you live in the country, cooling can account for a significant portion of your home's energy bill. In some southern climates, it can easily account for half, particularly in homes having air conditioning.