What should be indicated on the service label after servicing a refrigerant system?

After servicing a refrigerant system, it is essential to provide specific information on the service label to ensure that anyone who interacts with the system in the future has the necessary details about the service performed. This is particularly important for maintaining safety and compliance with regulations surrounding refrigerant handling.

Indicating the type of refrigerant used is crucial because it informs future technicians and service personnel what substance is circulating within the system, allowing them to handle it appropriately, especially in the event of a leak or repair. Including the date of service is critical to keep track of the system’s history, which aids in determining when the next maintenance should occur. Listing the technician's certification number is also important, as it assures that the service was performed by a qualified individual who is legally certified to handle refrigerants.

The other options, while they contain relevant information, do not cover the essential aspects required by regulatory standards for labeling after servicing a refrigerant system. For example, simply providing the technician's name and phone number does not inform about the specifics of the refrigerant or the service performed. Including the make and model of the appliance may provide useful data but lacks the crucial safety and compliance components that are required post-service. Lastly, warranty information about the refrigerant is not typically