Breadcrumb Home Air Conditioning & Refrigeration Technology ACR 148 ACR 148: HEAT PUMPS SYSTEMS I Download as PDF Class Program Air Conditioning & Refrigeration Technology Credits 3 Lecture Hours 1 Lab Hours 4 Instruction received in this course centers around the basic theory and application of heat pump systems and components. Upon completion, students will be able to install and service heat pumps in a wide variety of applications.