Air Conditioning Repair Certification (ETI) Practice Exam 2025 - Free Air Conditioning Repair Practice Questions and Study Guide

Question: 1 / 400

What phase of matter corresponds to refrigerant before entering the condenser?

Solid

Liquid

Gas

The phase of matter that corresponds to refrigerant before entering the condenser is gas. In an air conditioning system, refrigerant typically evaporates in the evaporator coil, absorbing heat from the surrounding air. This process converts the refrigerant from a liquid to a gaseous state. Once the refrigerant has absorbed enough heat and has changed to gas, it is collected and sent to the compressor.

Once it leaves the compressor, the gaseous refrigerant is then pumped under high pressure into the condenser. Therefore, before entering the condenser, the refrigerant is in its gaseous phase, where it is compressed and prepared for heat exchange.

Understanding the phase changes of refrigerants is crucial for troubleshooting and repairing air conditioning systems, as it directly relates to the efficiency and function of the refrigeration cycle.

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