Install, maintain, and repair air-conditioning systems and equipment. Assist in ducting, piping, wiring, and related site works. Perform routine service checks to ensure system performance and efficiency. Troubleshoot and resolve technical issues at site. Support engineers in project execution, testing, and commissioning activities. Follow safety and quality standards during all service and installation works. Requirements ITI / Technical Certification in Air Conditioning or Refrigeration. Minimum 2 years of hands-on experience in A/C installation and servicing. Good knowledge of HVAC systems, tools, and equipment handling. Ability to work in field environments and on-site projects. Strong problem-solving and teamwork skills.