It is a method used allowing air and moisture to escape to the outside from the wall cavity.
The system by which air escapes from the mold cavity during filling.
A service practice where the refrigerant vapor is allowed to escape into the atmosphere after the refrigerant liquid has been recovered. This practice is no longer acceptable.
A release of gas either controlled (through a vent) or accidental.
The means by which air is exhausted from the dryer through a metal duct.
A system that introduces air for combustion into the combustion chamber and disperses spent fossil fuel or flue products.
An opening for combustion gases to exit the house. Can be a chimney or a vent through the wall of the house. Includes all parts of the venting system - vent connector, chimney, etc.
The process of installing roof vents in a roof assembly to relieve vapor pressure. The process of water in the insulation course of the roof assembly evaporating and exiting via the roof vents.