HVAC (heating, ventilation, air-conditioning, and cooling) system is an air conditioning system mainly for application in large buildings, featuring water chiller coupled with fan coil and air handling unit for alteration of cooling and heating modes, plus combination with inverter and programmable logic controller (PLC), as well as the utilization of energy management and monitoring system, thereby attaining optimal comfort in indoor temperature, humidity, air cleanness, and air ventilation, thereby optimizing energy efficiency and power conservation.

Since TECO possesses R&D and manufacturing capabilities for large water chiller, motor, inverter, PLC, and energy management system, it can supply custom business air conditioning systems, plus global technological and maintenance and repair services, enabling comprehensive software and hardware integration for the creation of a comfortable environment with really high energy efficacy and power saving. HVAC, therefore, is capable of producing substantial economic benefits.