Whole-building pressurization testing is becoming standard practice for building projects. Many common energy conservation standards and model codes now exhibit requirements for enclosure airtightness, which are to be achieved through measured air leakage rates.

In any building, drafts or air leaks can cause serious issues for efficiency, comfort, and safety. Achieving airtightness—resistance to unintentional airflows directed both in and out of a building—is essential for any architect or construction firm that wants to maximize building performance.