What is the minimum required separation in feet between outdoor air intake openings and any lot lines or buildings on the same lot?

The minimum required separation between outdoor air intake openings and any lot lines or buildings on the same lot is established to ensure proper air quality and to minimize the risk of contaminants entering the ventilation system. Ten feet is the standard distance outlined in the mechanical code to provide sufficient space between the intake openings and potential sources of pollution, such as vehicle emissions, odors, and other airborne contaminants that can come from adjacent properties or buildings. This distance aids in protecting the integrity of the indoor air environment, promoting better health and safety for occupants.

In considering other options, lesser distances may not provide adequate separation from possible sources of indoor air quality issues, while distances that exceed ten feet may be unnecessarily restrictive without providing any additional benefit in most residential or commercial scenarios.