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Building HVAC Science

Apr 18, 2018

Show notes AirQuest 4 In this episode, Bill Spohn continues where he left off in Episode 3 of his AirQuest series, discussing airflow measuring methods and techniques. Bill covers vane anemometers as well as the garbage bag method (bag inflation device or BID) For a free copy of the ANSI standard mentioned in this episode go to If you’d like to see a BID in action, the EPA Energy Star program created this explanatory video which can be viewed at this link: For a 4 part video lesson by Bill, start with lesson one on YouTube, at this link: If you are interested in learning more, you can contact Bill at