Definitions for "DEPRESSURIZATION"
To decrease or maintain lower than normal air pressure in a building environment. To prevent exfiltration or escape of indoor air from a conditioned space.
A condition that occurs when the air pressure inside a structure is lower that the air pressure outdoors. Depressurization can occur when household appliances such as fireplaces or furnaces, that consume or exhaust house air, are not supplied with enough makeup air. Radon may be drawn into a house more rapidly under depressurized conditions.