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Behind the Scenes at the Blower Door Factory: Fan and Manometer Calibration 

Video

Overview

Watch this behind the scenes look at Retrotec, where fan and manometer calibration takes place.

Peek behind the curtain at Retrotec, into the calibration process for new and old blower doors and duct testing fans.

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Efficiency Vermont: Rewiring America Calculator

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A Cup of Joe: Airtightness 

Watch as Joe Lstiburek discusses his experience establishing airtightness standards and reviews how tight building enclosures should actually be.