Residential HVAC Installation Practice Exam

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Prepare for the Residential HVAC Installation Exam with this comprehensive quiz. Test your knowledge with multiple-choice questions and get ready to excel in your HVAC installation career.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What does moisture present in a refrigeration system react with to form acid?

Compressor oil
Refrigerant
Evaporator coil
Condenser fan

The correct answer is: Refrigerant

Moisture present in a refrigeration system can react with the refrigerant to form acid. This is because refrigerants are typically made of chemicals such as hydrochlorofluorocarbons (HCFCs) or hydrofluorocarbons (HFCs) which contain hydrogen and chlorine or fluorine atoms. When moisture comes into contact with these atoms, it can cause a chemical reaction that results in the formation of acid. It is important to keep moisture out of refrigeration systems to prevent this from happening and damaging the system. Option A Compressor oil is used in refrigeration systems to lubricate moving parts and prevent wear and tear. It does not react with moisture to form acid. Option C: The evaporator coil is where the refrigerant absorbs heat and turns into a vapor. It does not typically come into contact with moisture unless there is a leak in the system. Option D: The condenser fan helps to cool down the hot refrigerant vapor to turn it back into a liquid. It does not react with moisture to form acid.