It is an IoT smart heating and cooling application that automatically helps the efficient energy management of system air conditioners installed in small and medium-sized buildings (office or commercial buildings, etc.) and maintains a comfortable indoor temperature.1. Entrust efficient energy management to the ‘smart heating and cooling’ service.2. Check the temperature and humidity information in a graph.3. Start temperature management easily by setting the operating schedule.4. You can conveniently manage the air conditioner through timer setting and schedule setting.5. Receive air conditioner and temperature management notification information.