Fully functional dual-zone air conditioning system with integrated 2C Climatronic heating, utilizing R134a refrigerant. Built with Audi/VW OEM components, it includes an auxiliary heating unit (petrol/gasoline), visible HVAC components such as the compressor and airflow flaps, and offers comprehensive diagnostic capabilities through an OBD 16-pin connector. The trainer allows for real-time monitoring of system parameters, fault code simulations, and hands-on practice with tools like an oscilloscope or multimeter, making it an essential resource for technical education.