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

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What is the environmental impact of HFCs compared to older refrigerants like CFCs?

They are less damaging to the ozone layer

They have a low global warming potential

They have a high global warming potential

The correct response highlights that HFCs, or hydrofluorocarbons, are recognized for their high global warming potential (GWP). This characteristic is critical in understanding the environmental implications of using HFCs as refrigerants. While they indeed have lower ozone-depleting potential compared to CFCs, they are still potent greenhouse gases. This means that although HFCs do not harm the ozone layer as much, they contribute significantly to climate change due to their ability to trap heat in the atmosphere.

Understanding the GWP of refrigerants is essential for HVAC professionals, as it guides the selection of more environmentally friendly alternatives. The HVAC industry is moving towards refrigerants with lower or zero GWP, driven by regulations and environmental awareness. Identifying the impact of refrigerants on global warming helps in making informed decisions that align with environmental protection goals.

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They are biodegradable

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