FRP Roof Mount HVAC System Air Conditioner for City Buses Intercity Buses and Coaches Advantages: (1) Providing life cycle along with high efficiency to minimize electrical power; (2) Communicating with vehicle electronics for optimized control and operation; (3) Long life durable to meet environmental condition; (4) Saving time for seasonal maintenance or other service; (5) Friendly to the environment; (6) Providing better comfort for all weather conditions