Which type of certification is required for technicians servicing sealed systems on small appliances?

Technicians who service sealed systems on small appliances are required to have either Type I certification or Universal certification. Type I certification specifically addresses the servicing of small appliances, which include items like refrigerators and freezers that utilize refrigerants. This certification ensures that the technician is knowledgeable about the handling of refrigerants in these devices and understands the safety protocols necessary for working with them.

Universal certification, on the other hand, encompasses all types of refrigerant handling and includes the knowledge required for all types of appliances, not just small ones. This means that technicians who hold Universal certification are also qualified to handle small appliances, making it an acceptable alternative for those needing certification.

The other options do not fully meet the requirements for servicing sealed systems on small appliances as they either pertain to different categories of refrigerant handling or do not cover the necessary scope for these specific devices.