An Air Tech, or Air Technician, is a professional responsible for installing, maintaining, and repairing HVAC (heating, ventilation, and air conditioning) systems. They ensure proper airflow, troubleshoot system issues, and perform routine maintenance to keep equipment running efficiently. Air Techs may work in residential, commercial, or industrial settings, often requiring technical expertise and mechanical skills. Certifications and training are typically required, depending on the employer and location.