CoolSys is seeking an experienced HVAC Service Tech 5 to service, troubleshoot, and repair complex commercial and industrial HVAC-R systems. In this field role, you'll diagnose mechanical and electrical issues, perform preventive maintenance, and ensure safe, efficient operation of equipment for retail, commercial, and mission-critical customers. You'll work independently and within a team, uphold safety and quality standards, interact professionally with customers, and support energy-efficient, reliable HVAC-R solutions while mentoring junior techs and growing your technical expertise. Responsibilities Service, troubleshoot, and repair commercial and industrial HVAC-R systems Perform advanced mechanical and electrical diagnostics on complex equipment Complete preventive maintenance and system performance checks Ensure compliance with safety, EPA, and company standards in all work Communicate findings, recommendations, and repair options to customers Document work performed, parts used, and system conditions accurately Collaborate with team members to support large or complex projects Mentor junior technicians and share technical best practices Required Skills Commercial HVAC service Refrigeration systems Advanced troubleshooting/diagnostics Electrical and mechanical repair Reading blueprints and schematics Controls and automation basics Brazing and soldering Preventive maintenance Safety compliance (OSHA/EPA) HVAC service documentation