Anyone thinking of buying a house or building one should consider having a blower door test performed.

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. Here are five reasons why ...

Differential pressure measurement But you can always carry out a blower door test, or differential pressure measurement, a method to measure the airtightness of a building. In simple terms, it ...

Blower door tests measure the air changes per hour (ACH) at 50 pascals of air pressure. A typical house might test at 8 to 10 ACH; a "pretty good house" should hit 1, and a Passivhaus can't exceed ...

Ian Jack, of Blower-Door-XXL (Lemgo, Germany), was recently recognized by Guinness World Records for executing the world’s largest blower door test.

The blower door test costs several hundred dollars and will be mandatory for all new home construction starting July 1st. Older homes can also get the test done to see if their house can become ...

Can a house be too airtight? In this video, we perform a blower door test on what may be our most airtight build yet. We discuss the benefits and potential concerns of extreme airtightness in ...

With a blower door certification, our crews are trained how to install, measure and identify any leakage areas, and correct these issues to meet state code requirements. "By performing this test ...