This is the second class and covers heat pump fundamentals, components, applications, installation, and service. Heat gain and heat loss calculations based on ACCA's Manual J are included as troubleshooting guides for both the electrical and refrigeration system. All types of heat pump systems-both package and split system are studied, including air to air heat pumps, water-source heat pumps and various kinds of special purpose heat pumps. The course features a simplified performance guide/checklist for servicing heat pumps in both the heating and cooling cycles. Class will include a field trip in related studies. Textbook required.