A Marine HVAC job involves installing, maintaining, and repairing heating, ventilation, and air conditioning systems on ships, offshore platforms, and other marine vessels. Technicians ensure climate control systems operate efficiently in challenging marine environments, dealing with humidity, saltwater exposure, and confined spaces. They may work with refrigeration systems, ductwork, and ventilation to maintain air quality and comfort for crew and passengers. Proper maintenance of these systems is critical for safety, fuel efficiency, and regulatory compliance in the maritime industry.