“There are contractors doing the blower door test already -- we’ve had our blower door for 26 years,” said Paul Tschida, Residential Energy Program specialist for the Montana Department of ...

Energy codes are emerging or being updated nationwide. As air leakage testing becomes a requirement, some testers wonder what value it adds over informed visual inspections. Arguments about equipment ...

Most heating and cooling contractors have some familiarity with the blower door device - that big fan the weatherization guys and insulators plug into the doorway that sucks air from a home in order ...