Environmental Protection Agency (EPA) MVAC Certification

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Study for the EPA MVAC Certification. Dive into key environmental regulations with multiple choice questions, hints, and detailed explanations. Get ready to excel on your exam!

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What refrigerant has replaced CFC-12 in all automotive applications?

HFC-134a
R-410A
R-22
HCFC-141b

The correct answer is: HFC-134a

HFC-134a is the refrigerant that has largely replaced CFC-12 in automotive applications due to its reduced ozone depletion potential. CFC-12, also known as dichlorodifluoromethane, was found to be harmful to the ozone layer, contributing to its depletion. To mitigate this environmental issue, the industry transitioned to HFC-134a, which does not contain chlorine and thus does not pose the same threat to the ozone layer. HFC-134a, also known as 1,1,1,2-tetrafluoroethane, provides adequate cooling performance for automotive air conditioning systems and has become the standard in vehicles manufactured after the phase-out of CFCs. The other refrigerants listed have different applications or chemical properties that do not make them suitable replacements for CFC-12 within automotive contexts.