Disposable refrigerant tanks weighing over what amount must be evacuated before disposal?

The correct response highlights an important regulation concerning the disposal of refrigerant tanks. According to the EPA regulations, disposable refrigerant tanks that weigh more than 20 pounds must be evacuated before disposal. This requirement is in place to prevent the release of harmful refrigerants into the atmosphere, as certain refrigerants can contribute to ozone depletion and global warming.

The rationale behind this regulation is to ensure that any refrigerant remaining in a tank is properly recovered and managed, thus protecting the environment. This highlights the necessity for technicians and companies to adhere to strict guidelines when handling refrigerants, emphasizing safety and environmental stewardship.

In summary, the emphasis on evacuating tanks over 20 pounds serves both environmental protection and compliance with federal regulations, underscoring the critical role of technicians in proper refrigerant management.