Your heating and cooling ductwork may be wasting a lot of your energy dollars. Your home's duct system carries the air from your home's furnace and central air conditioner to each room.

Ducts are made of sheet metal, fiber glass, or other materials.

Unfortunately, many duct systems are poorly insulated or not insulated properly.

Ducts that leak cooled or heated air into unconditionedheated spaces can add hundreds of dollars a year to your heating and cooling bills.

Insulating ducts that are in unconditioned spaces is usually very cost effective.

Sealing your ducts to prevent leaks is even more important if the ducts are located in an unconditioned area such as an attic or vented crawl space.

If the supply ducts are leaking, heated or cooled air can be forced out unsealed joints and lost. In addition, unconditioned air can also be drawn into return ducts through unsealed joints.

In the summer, hot attic air can be drawn in, increasing the load on the air conditioner. In the winter, your furnace will have to work longer to keep your house comfortable. Either way, your energy losses cost you money.

Although minor duct repairs are easy to accomplish, ducts in unconditioned spaces should be sealed and insulated by using the appropriate sealing materials.
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