What is the minimum horizontal distance required between a vent terminal and a window opening of a building?

The minimum horizontal distance required between a vent terminal and a window opening of a building is important for ensuring proper ventilation and preventing the entry of exhaust gases or odors into the living space. A distance of 3 meters is typically specified to maintain air quality and safety. This distance is based on standards that address potential health hazards and ensure that any stale or contaminated air expelled from the vent does not re-enter through nearby windows, which could cause discomfort or health issues for occupants.

Other distances, such as 1.5 m, 1 m, or 0.5 m, are generally considered insufficient as they do not provide adequate separation to mitigate risks associated with air quality and ventilation effectiveness. Establishing a minimum of 3 meters helps to create a buffer that effectively disperses any emissions from the vent terminal, ensuring they are safely away from windows and occupied areas. This standard is essential in both residential and commercial building codes to promote a safe and healthy indoor environment.