Meaning EFFECTIVE LEAKAGE AREA
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EFFECTIVE LEAKAGE AREA


A parameter determined from blower door testing, giving a measure of the tightness of the house shell. Conceptually, this leakage area reflects the square inches of open area through the house shell, through which air can infiltrate or exfiltrate.
Source: southernradonreduction.com (offline)

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EFFECTIVE LEAKAGE AREA


ELA. Calculation in square inches equal to the total area of all air leaks in a building envelope. Defined by Lawrence Berkeley National Laboratory, the ELA is the area of a nozzle-shaped hole that wo [..]
Source: greenbuildingadvisor.com




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