Job-Specific Responsibilities: Troubleshoot, service and repair all types of HVAC (Heating, Ventilation, and Air Conditioning) control systems including but not limited to pneumatic, electric, electronic, DDC (Direct Digital Control), and general heating and cooling systems. Harvard University's Central Administration (CADM) is a 5,000+ employee organization that supports the university's overall excellence by understanding and serving the needs of its schools, students, faculty, staff, alumni, and surrounding communities.