What issue may occur if the exhaust air path is blocked in a ventilated space?

If the exhaust air path is blocked in a ventilated space, overheating can occur because proper airflow is crucial for maintaining temperature control. Ventilation systems are designed to exchange warm, stale air with cooler, fresher air. When exhaust air cannot escape, the natural convection and circulation processes are disrupted, leading to a build-up of heat within the space. This accumulation can create an uncomfortable environment and may lead to equipment malfunction or even safety hazards, especially in spaces that generate heat, such as kitchens, mechanical rooms, or manufacturing areas.

In contrast, the other issues—like increased humidity, ventilator noise, and airborne contaminants—are also possible consequences of inadequate ventilation but are secondary to the immediate threat posed by overheating. When exhaust is blocked, temperature rises before humidity levels increase significantly, potentially leading to other problems, yet the most critical and immediate issue present is the risk of overheating.