Developed through a modified DACUM (Developing a Curriculum) process involving business, industry, labor, and community agency representatives in Ohio, this document is a comprehensive and verified employer competency profile for heating, ventilation, air conditioning, and refrigeration occupations. The list contains units (with and without subunits), competencies, and competency builders that identify the skills needed to enter these occupations. The occupational, academic, and employability skills for this occupation or occupational area are included. Within the outline are three levels of items: core, advancing, and futuring. Core items identify the knowledge, skills, and attitudes essential for entry-level employment. These items are required to be taught and will be the basis for questions on the state vocational competency tests. Advancing items identify the knowledge, skills, and attitudes needed to advance in the occupation; futuring items identify the knowledge, skills, and attitudes needed to enter and remain in a given occupation 3 to 4 years from now. Titles of the 14 units are as follows: basic procedures; fundamental concepts of electricity; single-phase and three-phase circuits and devices; fundamental concepts of refrigeration; basic shop practices; shop practice and tools; installing refrigeration and air conditioning equipment; preventive maintenance; troubleshooting refrigeration and air conditioning equipment; servicing and repairing refrigeration and air conditioning equipment; installing heating systems; troubleshooting heating systems; servicing and repairing heating systems; and employability skills. (YLB)