What is the minimum horizontal distance that outdoor air intake openings must be located from any contaminant source?

The minimum horizontal distance that outdoor air intake openings must be located from any contaminant source is designed to ensure that the air entering the ventilation system is as clean and free from pollutants as possible. This distance helps to minimize the risk of drawing in harmful gases, smoke, fumes, or other contaminants that could affect indoor air quality.

Choosing a distance of 10 feet provides a reasonable buffer from common sources of contamination, such as exhaust vents, vehicle traffic, and industrial emissions. By adhering to this guideline, HVAC systems can operate more efficiently and contribute to a healthier indoor environment for occupants.

Distances shorter than this could lead to inadequate separation from sources of pollution, increasing the likelihood of indoor air quality issues. This consideration is vital in the design and installation of HVAC systems in residential and commercial buildings to promote health and safety standards.