[OKLAHOMA (OK) Refrigeration Contractor Exam Success Course] The Refrigeration Contractor Practice Course is designed for professionals seeking certification as refrigeration contractors in Oklahoma. This course offers a thorough review of refrigeration systems, including design, installation, and maintenance practices. Key topics include refrigeration codes, system components, and troubleshooting techniques. Participants will learn about various refrigeration applications, from commercial to industrial settings, and best practices for ensuring system efficiency and safety. The course includes practice questions and real-world scenarios to help candidates prepare effectively for the certification exam. By completing this course, professionals will be equipped to handle refrigeration contracting projects with confidence and expertise.