EMS Foreman, Electrical, EMS, Installer, Install, Installation, Service Tech, refridgeration, HVAC, refrigeration, HVAC-R, HVAC/R, diagnostic, commercial, service, mechanical, mechanic, AC, field service, chiller, specialist, HVACR, sr, senior, specialty. Responsibilities: Service Technician – HVAC provides support to an installation team by completing tasks in a safe, prompt, accurate, and professional manner and following customer specifications, applicable building code and proper piping practices.