1, according to the driving mode is divided into: independent (dedicated an engine-driven compressor, cooling capacity, stable, but high cost, size and weight, used for large and medium-sized passenger car) and non-independent Driven by the car engine, the cooling performance is greatly affected by the engine work, poor stability, and more for small passenger cars and cars).
2, according to the performance of air-conditioning is divided into: a single functional (refrigeration, heating, ventilation system installed, separate operation, non-interference, and more for large buses and trucks) and integrated heating and cooling (refrigeration, heating, ventilation Blower and duct, on the same control panel to control the work can be divided into cold and warm air were combined work and cold and warm air can work simultaneously mixed thermostat.
3, according to the control mode is divided into manual (toggle the function keys on the control panel on the temperature, wind speed, wind direction control) and electrically controlled pneumatic adjustment (the use of vacuum control mechanism, the election air conditioning key, you can at a predetermined temperature Automatic control of temperature and air volume).
4, according to the control mode is divided into: automatic adjustment (using the comparison circuit, through the sensor signal and the preset signal control adjustment mechanism, automatically adjust the temperature and air volume) and computer-controlled automatic adjustment (microcomputer control center, to achieve On the car's air environment for all-round, multi-functional optimal control and regulation).