blower door test

A blower door test is a method used to measure a building’s airtightness. A specialized fan is temporarily installed in a building’s doorway to pressurize or depressurize the space. Sensors monitor how much air leaks in or out during the test. This helps identify areas where air might be escaping, which can impact energy efficiency, comfort, and indoor air quality. The results provide a quantifiable measure of airtightness, guiding improvements for better insulation, sealing, and energy savings. It’s a common, professionals-conducted test that helps improve building performance and reduce energy costs.