Service Tech, refridgeration, HVAC, refrigeration, HVAC-R, HVAC/R, diagnostic, commercial, service, install, mechanical, mechanic, apprentice, AC, field service, chiller, mgr, lead, supervisor, leader, regional, HVACR, supermarket, rack systems Maintains communication with vendors and factory personnel concerning warranty issues, product recall notices, operational problems with products, premature failures, and other issues.