Theory and operation of air conditioning systems. Lab practices include maintenance, testing, diagnosis, and repair of these systems. Preparation for the ASE Certification Test is included. NOTE: This course requires the student to be able to use hand tools that require a twisting motion, lifting objects that weigh a minimum of 35 pounds, and vision capabilities to read mechanical precision measurement tools (similar to reading 8 or 9 pt font from 6-12 inches away).