The history of the blower door

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The blower door as we know and love it today springs from technology first used in Sweden in 1977, where it was actually a blower window. The idea migrated to the United States with Ake Blomsterberg, who came to Princeton University to do research in 1979. We started using it because we were trying to understand infiltration, says David Grimsrud, who was a researcher at Lawrence Berkeley National Laboratory (LBNL) in Berkeley, California, at the time. Read more.