Air Leakage of US Homes: Model Prediction PDF

Air tightness is an important property of building envelopes. It is a key factor in determining infiltration and related wallperformance properties such as indoor air quality, maintainability and moisture balance. Air leakage in U.S. houses consumes roughly 1/3 of the HVAC energy but provides most of the ventilation used to control IAQ. The Lawrence Berkeley National Laboratory has been gathering residential air leakage data from many sources and now has a database of more than 100,000 raw measurements. This paper uses a model developed from that database in conjunction with US Census Bureau data for estimating air leakage as a function of location throughout the US.

Presented at Thermal Performance of Exterior Envelopes of Whole Buildings X – December 2007

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