Automotive Service Excellence (ASE) Air Conditioner Certification Practice Exam 2026 - Free ASE Air Conditioner Practice Questions and Study Guide

Question: 1 / 400

What reaction occurs when moisture reacts with R12 refrigerant in an A/C system?

It increases system pressure.

It forms hydrochloric acid, causing corrosion.

When moisture comes into contact with R12 refrigerant in an air conditioning system, it leads to a significant chemical reaction that forms hydrochloric acid. This reaction is a concern because hydrochloric acid is corrosive and can damage metal components within the A/C system, such as evaporators, condensers, and compressor interiors. The presence of moisture in the refrigerant not only affects the performance of the A/C system but also shortens the lifespan of its components due to the corrosive nature of the acid produced. Therefore, it is crucial to ensure that the refrigerant and the system are free of moisture to maintain efficiency and prevent damage.

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It helps in refrigerant recovery.

It has no significant effect on the system.

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