Service Tech, refridgeration, HVAC, refrigeration, HVAC-R, HVAC/R, diagnostic, commercial, service, install, mechanical, mechanic, apprentice, AC, field service, chiller, specialist, HVACR, supermarket, rack systems. Responsibilities: Provides service to the customer base by repairing and overhauling equipment, such as compressors, water pumps, air handlers, electrical and mechanical control devices that exceed the customer’s expectations.