ACR 0080L - Air Conditioning, Refrigeration, and Heating Mechanics Lab I ACR 0080L - Air Conditioning, Refrigeration, and Heating Mechanics Lab I 150 con. hrs. Occupational This lab provides you the opportunity to apply theories and skills learned to both simulated problem-solving situations and actual jobs representative of the trade. Through these experiences you will develop competence and expertise in the skills of the trade. Course Designations: (CH)