Air Conditioning Repair Certification (ETI) Practice Exam

Question: 1 / 400

What is the purpose of insulation around refrigerant lines?

To minimize heat gain and loss

The purpose of insulation around refrigerant lines is primarily to minimize heat gain and loss. When refrigerant lines are circulating cold refrigerant, any heat gained from the surrounding environment can decrease the efficiency of the cooling system. Insulation acts as a barrier, preventing external heat from entering the refrigerant lines. Similarly, in systems where refrigerant lines carry hot refrigerant, insulation helps prevent heat loss to the environment. This insulation is critical for maintaining the energy efficiency of air conditioning systems, ensuring they operate effectively and use less energy to achieve the desired cooling effects. By minimizing heat transfer, insulation helps maintain the proper temperature of the refrigerant as it travels through the system, thus improving overall performance and efficiency.

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To protect the refrigerant from degradation

To improve airflow

To make the lines aesthetically pleasing

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