Blower Door Testing forms a critical part of commissioning for new construction, restoration or retrofit projects in residential, commercial and multifamily buildings. This air-leakage measurement measures the flow rate of conditioned indoor air in the building enclosure under standardized pressure differentials. The data obtained can reveal various air tightness metrics that vary depending on standard and procedure. These metrics include the number of air changes per minute at a given pressure difference. They can also be used to estimate... read full review »