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blower door test
A special instrument used to measure air
leakage in a building shell and its ductwork. The equipment consists
of a temporary door covering which is installed in an outside doorway and
a blower which forces air into or out of the building. The blower door measures
how leaky the building and ductwork are, and can be used to find the location
of the major leaks. Without a blower door, finding the leaks in the ductwork
can be difficult since the ducts are often in hard to reach areas such as
the attic or crawl space and the leaks are usually hidden from view by duct
insulation.
The most rigorous way to locate duct leaks is with a blower door or similar
analysis performed by a professional. This analysis measures the magnitude
of your duct leakage and identifies its location. Some companies offer ductwork
sealing services with a follow-up blower door check to ensure duct leakage
has been reduced to acceptable levels. Related entry
• energy audit
Related category
• INSULATION
TOPICS Source: CoServ
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