Which technician statement regarding evaporator issues is correct?

The correct statement about evaporator issues indicates that both crushed ducting and dirty air filters can contribute to icing problems in an HVAC system.

When ducting is crushed, it restricts airflow, leading to inadequate ventilation. This restriction causes the evaporator coil to become too cold due to insufficient warm air passing over it, resulting in the formation of ice. Ice can accumulate and further reduce the efficiency of the system, creating a cycle of poor performance.

Similarly, dirty air filters restrict airflow, which can produce the same effect as crushed ductwork. When the filters are clogged, the air cannot move freely, and the evaporator coil does not receive enough warm air to prevent icing. Consequently, just like with crushed ducting, the coil can drop below freezing, causing moisture to freeze on the surface.

Understanding the relationship between airflow issues caused by both ducting and air filters is crucial for effective HVAC system maintenance and troubleshooting. Therefore, acknowledging that both conditions can lead to icing is essential for technicians in diagnosing and resolving evaporator issues efficiently.