The air outlet direction adjusted. Some owners in the use of air conditioning, do not pay attention to adjust the direction of the blowing air conditioning, which is not conducive to play the best effect of air conditioner. According to the princip. According to the principle of cold air sinks, hot air rising, the correct approach should be open air conditioning, when the outlet will turn on, turn on the heater when the outlet will down.Five, long time open air conditioning. Some owners often in the car has been open air conditioning, but long time use of air conditioning can make the condenser pressure is too large, it will cause the loss of refrigeration system, because the air conditioner is a heavy burden on the engine, but the engine itself is a heating body, not to mention in hot weather. Some small cars can appear even boiling water phenomenon in this case, the influence of driving also reduces the efficiency of air conditioning. So every time the use of air conditioning time not too long, if the temperature inside the car has reached a comfortable temperature, you can turn off the air conditioner, later again.Six, do not open air conditioning smoke in the car. Because the smoke compartment, smoke suddenly row do not go out, irritating to eyes and respiratory system, is not conducive to health, if smoking, air conditioning and ventilation control should be adjusted to "discharge" position, make inside the smoke is discharged out of the car.Seven, not in the open air conditioning stopped the car long time to rest or sleep. Because the automobile seal is good, the vehicle stops, poor ventilation in the car, at this time if the open air conditioning rest or sleep, probably because the CO engine exhaust gas leakage into the car caused the personnel poisoning, or even death.Eight, low speed when the try not to use air conditioning. Driving in heavy traffic, not to improve air conditioning efficiency and make the engine running at high speed, because have the adverse effect to do so on the engine and the air conditioning compressor service life.Nine, first turn off and then turn off the air conditioner. Some owners often flameout after remembered off the air conditioning, the engine is harmful, because it in the vehicle the next start, the engine will bring air conditioning load start, such a high load can damage the engine. So every time when parking should first turn off the air conditioning and extinction, but also should be in the vehicle start two or three minutes, get engine lubrication, and then open the air conditioner.