What element can cause poor cooling in an air conditioner if it is restricted or dirty?

The evaporator coil plays a crucial role in the cooling process of an air conditioning system. It is responsible for absorbing heat from the indoor air and converting refrigerant from a liquid state to a gas. If the evaporator coil is restricted or dirty, it hinders the coil's ability to absorb heat effectively. This leads to reduced cooling efficiency, causing the air conditioner to struggle in maintaining the desired indoor temperature. The dirt on the coil can block airflow, resulting in inadequate heat exchange, while restrictions can disrupt the refrigerant flow, further impairing the system's performance. Keeping the evaporator coil clean and free from obstructions is vital for optimal air conditioning operation.