Air Conditioning Repair Certification (ETI) Practice Exam

Question: 1 / 400

What factor primarily affects the efficiency of an air conditioning system?

The location of the external unit

The size of the ducts

The cleanliness of the coils

The efficiency of an air conditioning system is significantly influenced by the cleanliness of the coils. The evaporator and condenser coils play a crucial role in the heat exchange process, where they absorb and release heat, respectively. When these coils are clean, they can effectively transfer heat, allowing the system to operate at optimal performance. Dirty coils can hinder this process, leading to increased energy consumption, reduced cooling capacity, and potential system failures over time.

Maintaining the cleanliness of the coils is essential for ensuring that the air conditioning system runs efficiently and provides the desired comfort levels within a space. This maintenance task helps in prolonging the lifespan of the unit and reducing repair costs associated with inefficient operation.

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The age of the thermostat

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