What is the primary consideration for airflow in a mitigation system according to AARST standards?

The primary consideration for airflow in a mitigation system, according to AARST standards, focuses on ensuring that the system performs effectively based on Performance Factor Evaluations (PFE). This performance-driven approach ensures that the mitigation measures effectively reduce radon levels within the structure.

PFE analysis looks at various factors, including the system's design, operational efficiency, and ability to maintain adequate airflow to reduce radon concentrations effectively. By emphasizing performance, the AARST standards ensure that the mitigation systems not only comply with regulations but also deliver the desired results for indoor air quality and occupant safety.

Other considerations like minimizing energy consumption, ensuring adequate ventilation, and maintaining a steady temperature, while important in general building maintenance and operation, do not specifically prioritize the performance metrics tied to radon mitigation effectiveness as outlined by AARST. Thus, the focus on PFE analysis provides a clear pathway for assessing and confirming the effectiveness of mitigation strategies in achieving low radon levels.