Some of the topics covered on a refrigeration exam include refrigeration process and components, refrigeration theory, genera safety practices, system evacuation and refrigerant charging. Other topics include recovery equipment, thermostatic expansion valves, water-cooled condensers, air cooled condensers, and maths and psychometric charts.
The refrigeration licensing board requires all students to work directly with a qualified and experienced refrigerant undergoing certification. The exam consists of questions that represent relevant topics covered in the actual refrigeration license exam. Before taking refrigeration exams, students, professionals and technicians undergo a refrigeration practice exam. This practice exam helps them improve their skills in preparation for the actual refrigeration exam.