The Blower Door for home air leakage testing is a specially built, calibrated device that is used to identify the overall air leakage of a home and its Heating and A/C duct system. By depressurizing the entire house, specific leakage areas can be located.
The Blower Door consists of a large fan which is mounted in a frame. The frame is placed in an exterior door and used to calculate the leakage of the house and the Heating and Air distribution ductwork. This test is part of our complete home energy assessment.
Home air leakage and duct leakage can have a significant impact on the heating and cooling costs of a home as well as the overall level of comfort. When completing full weatherization for both existing homes and new construction. Usually, the minimum leakage we correct is 20%.
Homeowners are always amazed at what they learn about their homes during a blower door test. Home air leakage sites are identified, the total air change rate of the house is determined, duct leakage is measured and located, and moisture, humidity, mold and mildew problems can usually be traced to their source.
The recommended strategy in both new and old homes is to reduce air leakage as much as possible and to provide controlled ventilation as needed. For simple house designs, effective spot ventilation, such as kitchen and bath fans that exhaust to the outside, may be adequate.