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| Vent header
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A vent pipe into which several vents connect. The vent pipe leads to the vent stack and out of the building. |
| Vent pipe
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A pipe serving as a vent. |
| Vent stack
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A vertical line in a venting system leading out of a structure. |
| Vent system
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A system of pipes and vents used to relive pressure in a system or route gas or liquid from a building. |
| Vented heater
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A type of combustion heating appliance in which the combustion gases are vented to the outside, either with a fan (forced) or by natural convection. |
| Ventilation
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The replacement of stale air with fresh air by circulation through a series of vents or a mechanical system, i.e. air conditioning. |
| Ventilation air
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That portion of supply air that is drawn from outside, plus any recirculated air that has been treated to maintain a desired air quality. |
| Ventilation baffles
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| Ventilation effectiveness
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A measure of the fraction or percentage of outdoor air that reaches the occupied zone of a specified area; an evaluation of air delivery to occupants, regardless of the effectiveness of contaminant removal. |
| Ventilation efficiency
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An evaluation of the pollutant removal capacity of a ventilation system. |
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