Which method is commonly used for visualizing airflow while detecting air leaks?

Smoke testing is a widely used method for visualizing airflow and detecting air leaks. This technique involves introducing smoke into a building or structure and observing the movement of the smoke. When smoke flows from areas where it is not supposed to be, it indicates the presence of air leaks. This visual representation helps identify specific leaks, making it easier to address problem areas.

This method is particularly effective because the smoke allows for immediate observation of airflow patterns and leak locations, providing a clear, tangible way to assess a building's airtightness.

While infrared scanning can be employed to assess temperature differences and identify potential leak points indirectly, it does not provide a direct visualization of airflow. Pressure testing measures the building's ability to hold pressure but does not visually indicate leak locations. Network analysis is more of a theoretical approach and is not typically used for direct visualization of air leaks. Thus, smoke testing stands out as the most effective method for directly visualizing airflow and detecting air leaks.