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.