HVAC - EPA Certification Practice Exam 2025 - Free EPA Certification Practice Questions and Study Guide

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What is a characteristic of HFC compounds?

They contain chlorine and bromine.

They are completely non-flammable.

They consist of hydrogen, fluorine, and carbon atoms.

HFC compounds, or hydrofluorocarbons, are characterized by their chemical structure, which consists of hydrogen, fluorine, and carbon atoms. This molecular composition is significant because it defines their properties and behavior as refrigerants. Unlike older refrigerants such as CFCs (chlorofluorocarbons) and HCFCs (hydrochlorofluorocarbons), HFCs do not contain chlorine or bromine, which are responsible for ozone depletion. Therefore, their structure of only hydrogen, fluorine, and carbon allows them to be considered a more environmentally friendly alternative in certain applications despite their greenhouse gas potential. This highlights the importance of understanding the chemical makeup of refrigerants, particularly in relation to environmental impact regulations and practices within the HVAC industry.

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They deplete the ozone layer.

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