Standardized vocational education course titles and core contents for two courses in Mississippi are provided: heating and air conditioning I and II. The first course contains the following units: (1) orientation; (2) safety; (3) refrigeration gauges and charging cylinder; (4) vacuum pump service operations; (5) locating refrigerant leaks; (6) copper tubing; (7) soft soldering procedures; (8) silver brazing; and (9) meters. The second course contains the following units: (1) orientation; (2) safety; (3) electric circuits and controls, part 1; (4) electric circuits and controls, part 2; (5) domestic refrigeration and freezers; (6) commercial systems; (7) commercial condensers; (8) commercial evaporators, part 1; (9) commercial evaporators, part 2; and (10) commercial motor controls. Each unit consists of these components: objectives, with core/essential objectives indicated; suggested instructional practices; list of suggested resources; list of evaluation and suggested minimum performance standards, with core/essential objectives indicated; and performance record, with core/essential objectives indicated. A checklist for each course combining all unit performance standards into a single list is included. (NLA)