Blower Door Test

Diagnose problems in the building envelope with a blower door.

Equipment needed for comprehensive blower-door testing can be packed into a few easily-transported cases.

The blower door consists of an adjustable aluminum frame and a nylon panel.

The panel is fitted with a powerful variable-speed fan.

Blower-door testing can generate a detailed summary of a buildings airflow characteristics. Leakage can be expressed either as an equivalent hole size — called effective leakage area, or ELA — or as a ratio of leakage to shell area, or leakage ratio (LR), a useful unit for comparing the tightness of different building shells.

Join the Discussion

Please read our Content Guidelines before posting

Close X