Blower Door Testing Equipment

1. Digital manometer and fan control: Measures indoor air tightness, as well as indoor and outdoor air pressure; controls fan speed
2. Blower door: Attaches to an exterior door; provides an airtight seal between interior and exterior portions of house, allowing a fan to be installed to depressurize home
3. Fan: Depressurizes house for airtightness testing

^{*Image from The Energy Conservatory website; https://www.energyconservatory.com/product/minneapolis-blower-doortm-system-with-dg-1000/}