What effect does dirty evaporator coils have on air conditioning performance?

Dirty evaporator coils have a significant impact on air conditioning performance by restricting airflow and decreasing efficiency. The primary function of the evaporator coil is to absorb heat from the indoor air, allowing the refrigerant to evaporate and, in turn, cooling the air that is circulated back into the living space. When the coils are dirty, the layer of dirt and grime acts as an insulating barrier, preventing efficient heat transfer.

As a result, the air conditioning system has to work harder to compensate for the reduced efficiency, leading to increased energy consumption and higher utility bills. Additionally, restricted airflow can cause the system to cycle on and off more frequently, which can lead to increased wear and tear on the components and shorten the overall lifespan of the system.

Maintaining clean evaporator coils is essential for optimal air conditioning performance, ensuring that the system operates efficiently and effectively. Regular maintenance, including cleaning or replacing filters and inspecting coils, is crucial for sustaining the system's efficiency and longevity.