Breadcrumb Home Air Conditioning & Refrigeration Technology ACR 147 ACR 147: REFRIGERATION TRANSITION & RECOVERY THEORY Download as PDF Class Program Air Conditioning & Refrigeration Technology Credits 3 Lecture Hours 3 Lab Hours 0 This course is EPA-approved and covers material relating to the requirements necessary for type I, II, and III universal certifications. Upon completion, students should be prepared to take the EPA 608 certification examination.