Environmental Protection Agency (EPA) MVAC Certification

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Prepare for the EPA MVAC Certification Exam with multiple-choice questions and detailed explanations. Boost your understanding and readiness for the EPA certification test!

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What type of refrigerant is R-12 classified as?

CFC
HCFC
HFC
Natural refrigerant

The correct answer is: CFC

R-12 is classified as a chlorofluorocarbon (CFC). CFCs, including R-12, were widely used in refrigeration systems, including motor vehicle air conditioning systems, due to their effective properties as refrigerants. However, the main environmental concern with CFCs is their potential to deplete the ozone layer, leading to international agreements, such as the Montreal Protocol, which phased out their production and use. CFCs contain chlorine, fluorine, and carbon, and their stable nature allows them to persist in the atmosphere for long periods. When they eventually reach the stratosphere, UV radiation breaks them down, releasing chlorine atoms that can destroy ozone molecules. Understanding this classification is critical for technicians working with older systems that still use R-12, as proper handling and disposal are essential to mitigate environmental harm.