What is a critical consideration regarding airflow in radon mitigation design?

In radon mitigation design, it is essential to base airflow considerations on empirical data gathered through testing methods, such as a vacuum cleaner test. This test measures the effectiveness of a radon mitigation system in creating a sub-slab depressurization effect by assessing how airflow can be manipulated to ensure that radon is adequately vented out of the living space. Proper airflow is crucial because it directly affects the system's efficacy at reducing radon levels.

Understanding the appropriate airflow level helps to ensure that the system not only mitigates radon effectively but also operates efficiently without wasted energy, thereby balancing energy savings with indoor air quality. In this context, referencing airflow needs from a vacuum cleaner test provides practical information that can be used to optimize the design of the mitigation system.

Using empirical data allows mitigation specialists to determine optimal airflow conditions that prevent radon gas from accumulating indoors, thereby improving health and safety outcomes for occupants.