lufttetthetstesting
Lufttetthetstesting, also known as airtightness testing or blower door testing, is a method used to measure how airtight a building's envelope is. It quantifies the amount of uncontrolled air leakage through the building's exterior, which can significantly impact energy efficiency, indoor air quality, and occupant comfort. The testing process involves using a powerful fan, typically mounted in an exterior doorway, to depressurize or over-pressurize the building. This pressure difference forces air through any leaks in the building envelope. Sensors then measure the airflow rate required to maintain a specific pressure difference, typically 50 Pascals.
The results of lufttetthetstesting are usually expressed in terms of air changes per hour at 50 Pascals
Lufttetthetstesting is becoming an increasingly important part of building codes and green building certifications worldwide. It