When extending a gas vent through an exterior wall, how should it terminate relative to eaves or parapets?

The proper termination of a gas vent through an exterior wall is crucial for both safety and efficiency. When a gas vent exits through an exterior wall, it should be positioned such that it does not terminate below the eaves or parapets. This is to ensure that exhaust gases are effectively dispersed into the atmosphere and do not recirculate back into the building or adjacent areas.

Terminating at or below the level of eaves or parapets can lead to dangerous situations where the vented gases, which may contain harmful substances, are trapped or redirected back towards the building or surrounding structures. By requiring vents to terminate above eaves or parapets, building codes help prevent the accumulation of potentially harmful gases and minimize the risk of flue gas re-entering the living space or being obstructed by roof overhangs.

This requirement emphasizes the importance of proper venting practices in maintaining indoor air quality and ensuring the safety of the building's occupants.