Blower Door -
Air Leakage Test
SMOKE VAPOR / DRAFT TESTING
Identify drafts and air leaks. See how the smoke moves to show the air movement. You control the amount of smoke by using the trigger. The smoke is a perfectly mixed non-toxic sweet smelling Glycol, Glycerin and water solution vapor.
Blower Door Test:
Essentially, a blower door is a very powerful fan that is fixed into the frame of an exterior door. When turned on, the fan pulls all the air out of the house and lowers the air pressure inside. This results in the higher outside air pressure flowing into the house through any unsealed cracks and openings, revealing the air infiltration rate of the home and showing where an air leak may be hiding.
A Blower doors consist of:
A frame and a flexible panel that fits into a doorway
A variable-speed fan
A pressure gauge that measures pressure differences inside and outside the home
An airflow manometer and hoses for measuring airflow
Possible use of a smoke pen to show leakage visually