This is because the direction of airflow within the switches can affect the heat level of the room, as the switches can either exhaust or intake hot air from the environment. The network administrator should take into consideration the direction of airflow within the switches before installing the new equipment, and ensure that the switches are aligned in the same direction and have enough space for ventilation. The network administrator should also avoid mixing switches with different airflow directions, as this can create a hot spot and reduce the cooling efficiency. The source of this answer is the Cisco ENCOR v1.1 course, module 2, lesson 2.1: Implementing Device Hardening.