Environmental Protection Agency (EPA) MVAC Certification

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Get ready for the EPA MVAC Certification exam with our study materials covering flashcards and multiple choice questions, each offering hints and explanations. Prepare thoroughly for your certification!

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!

Practice this question and more.

Is R-134a a corrosive refrigerant?

True
False
Only at high temperatures
Only in certain conditions

The correct answer is: False

R-134a, or tetrafluoroethane, is classified as a non-corrosive refrigerant under standard conditions. Unlike some refrigerants that can cause degradation and corrosion of system components or materials, R-134a is stable and does not react chemically with metals or plastics used in MVAC systems. It has been widely used in automotive air conditioning and other cooling applications due to its low toxicity and minimal environmental impact compared to older refrigerants like R-12. In terms of performance and safety, non-corrosive attributes contribute to the longevity and reliability of the equipment using R-134a. This characteristic eliminates the risks associated with corrosive substances, making maintenance and repairs easier and less costly. Other options suggest conditions under which R-134a might become corrosive, but this is not accurate for the refrigerant itself under normal operating conditions, which is the basis for the correct choice.