How does one identify ventilation paths in a drawing?

Identifying ventilation paths in a drawing is primarily achieved by examining the layout of air ducts and paying attention to indicators that show the direction of airflow. Air duct layouts are designed to provide clear visual guidance on how air moves through a building's HVAC system. These layouts, often depicted in isometric or plan views, include arrows that represent the direction airflow should take, typically leading to various rooms or areas that require heating or cooling.

In contrast, looking for color codes on the drawing may assist in distinguishing between different systems or components, but it does not specifically indicate how ventilation paths operate in terms of airflow. Measuring distances between vents could provide some insight into spacing but does not convey directional flow information essential for ventilation. Reviewing the installation timeline may be useful for understanding when systems were put in place, yet it doesn’t provide any details on how those systems are designed to operate in terms of airflow and ventilation paths.