For example, if ducts are located outside the conditioned area of the home, such as in the attic, and they are leaking, the homeowner may not realize they are paying to heat or cool the air outside their living environment. Stihl BGA So, if your home had, let's say, CFM at 50, you would have roughly square inches of leakage.

For example, if ducts are located outside the conditioned area of the home, such as in the attic, and they are leaking, the homeowner may not realize they are paying to heat or cool the air outside their living environment. The bottom line here is:

In such situations, other tools such as infrared thermometers or cameras discussed later in this fact sheet can be used to detect changes in temperature that are indicative of air leakage. Armed with your blower door report, and with your auditor's recommendations, take the next step and fix the problem areas in your home.