HVAC Service Technicians play a vital role in maintaining comfortable indoor environments through installation, maintenance, and repair of heating, ventilation, and air conditioning systems. They troubleshoot issues, perform routine checks, and ensure compliance with safety regulations. Key skills include technical knowledge, problem-solving, and communication. Typically working in residential or commercial settings, technicians collaborate with contractors and engineers. Opportunities for growth include senior technician roles, management positions, or specialization in energy efficiency and green technologies.