air-tightness testing

Air-tightness testing assesses how well a building prevents unintended air leaks. It involves pressurizing or depressurizing the building using a specialized fan, then measuring the air that escapes or enters through small gaps and cracks. This helps identify areas where air leaks occur, improving energy efficiency, indoor comfort, and building durability. The test provides a numerical value called the air leakage rate, which guides improvements to ensure the building maintains a consistent indoor environment and reduces energy waste.