Definitions for "Blower Door"
A device that creates either higher or lower than normal air pressure within a house in order to locate sources of air infiltration
A large fan placed in an exterior doorway to pressurize or depressurize a building to determine its air leakage rate expressed in air changes per hour or cubic feet per minute.
Diagnostic equipment consisting of a fan, removable panel and gauges, used to measure and locate air leaks.