ESCO Air Conditioning Practice Exam

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Prepare for the ESCO Air Conditioning Practice Exam. Study using flashcards and multiple-choice questions with detailed hints and explanations. Get ready to ace your exam!

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Which compound is used in R-410A systems?

Ammonia
R-11
R-12
R-22

The correct answer is: Ammonia

R-410A is a popular refrigerant used in air conditioning systems. It is a blend of two HFC refrigerants, namely R-32 and R-125. Ammonia (option A) is not the correct compound used in R-410A systems. Option B, R-11, is a chlorofluorocarbon (CFC) refrigerant that is no longer used due to its harmful impact on the ozone layer. Option C, R-12, is a hydrochlorofluorocarbon (HCFC) refrigerant that is also being phased out globally due to its ozone-depleting potential. Option D, R-22, is an HCFC refrigerant that is commonly used in older air conditioning systems but is being replaced by more environmentally friendly refrigerants like R-410A.