Service Tech, HVAC, refrigeration, HVAC-R, HVAC/R, diagnostic, commercial, service, install, mechanical, mechanic, apprentice, AC, field service, chiller, specialist, specialty, hotside, hot side, Hstech, HVACR, cooking equipment, restaurant, kitchen, appliance. Responsibilities: Provides preventative maintenance activities for customers by diagnosing equipment malfunction and any operating deficiency of the mechanical equipment to ensure quality work performance for the customer base.