What is not an expected consequence of a dirty evaporator coil?

A dirty evaporator coil can lead to several significant issues within an HVAC system. When the coil accumulates dirt and debris, it can restrict airflow, making it harder for the system to draw in air effectively. This restriction can lead to inadequate heat transfer since the air cannot sufficiently interact with the coil, resulting in warm air being blown into the living space. An improper temperature drop can also occur, as the dirt prevents the coil from executing its designed function of cooling the air efficiently.

However, condenser icing over is not a direct result of a dirty evaporator coil. Typically, icing in the condenser is related to problems occurring in the outdoor unit or refrigerant issues. This can range from low refrigerant levels to inadequate airflow around the condenser. While issues in the evaporator coil can lead indirectly to various system inefficiencies, they do not typically cause ice to form on the condenser itself. Instead, the ice formation is indicative of separate issues that might influence the entire refrigeration cycle. This distinction clarifies why icing over the condenser is not an expected consequence of a dirty evaporator coil.