Which of the following is a potential hazard of improper refrigerant handling?

The potential hazard of improper refrigerant handling is environmental contamination. When refrigerants are not handled correctly, they can leak into the atmosphere, leading to negative impacts on air quality and contributing to climate change. Many refrigerants contain substances that can deplete the ozone layer or have high global warming potential. Therefore, it is crucial to handle refrigerants according to safety protocols and regulations, including proper recovery, recycling, and disposal methods, to minimize any harmful effects on the environment.

In contrast, increased energy efficiency, enhanced refrigerant performance, and reduced repair costs are all positive outcomes associated with proper refrigerant handling and maintenance, rather than hazards associated with improper practices. These incorrect options highlight the benefits that can be achieved through correct guidelines and procedures rather than the dangers posed by negligence.