What is the potential impact of neglecting duct cleaning in a PCA system?

Neglecting duct cleaning in a PCA system can lead to several negative impacts, including reduced airflow, decreased cooling or heating efficiency, poor air quality, and potential health hazards. Over time, dust, dirt, mold, and other contaminants can accumulate inside the ductwork of the PCA system. This buildup restricts airflow, reducing the system's ability to deliver conditioned air to the aircraft cabin effectively. The restricted airflow forces the system to work harder to maintain the desired temperature, decreasing its cooling or heating efficiency and increasing energy consumption. The accumulated contaminants can also degrade air quality, potentially exposing passengers and crew to allergens, irritants, and pathogens. Mold growth in the ductwork can release spores into the air, triggering allergic reactions or respiratory problems. Therefore, regular duct cleaning is essential for maintaining optimal system performance, ensuring good air quality, and protecting the health of passengers and crew.