The blower door is an essential tool to determining how to fix your home's comfort and energy efficiency problems. It is very difficult to determine the leaky and troublesome spots of your home without the blower door - as well as impossible to find the actual air infiltration level.
Every home has to breathe. Air has to enter the home, and air has to leave. Sufficient air flow in a home helps clear the home of pollutants, carbon monoxide, and moisture (a.k.a. mold's best friend). Too much air flow makes the home drafty, uncomfortable, and inefficient.
By taking the volume of the home, and a few other factors, we can scientifically determine how much air should enter and leave your home - also called the Building Airflow Standard or B.A.S. By using the blower door, we can determine the actual infiltration of air into your home.
Since we now know the home's actual air infiltration and the B.A.S, we can figure out how much the home may be air sealed. By minimizing the air infiltration, the home is now more comfortable, energy efficient, and safe.