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Myth 1: Turn on the AC immediately after getting in the car

When a car is just started, the engine is not in an optimal working condition. Turning on the AC at this time will increase the engine's load. It is recommended to swing the car doors open and closed several times in a row before getting in. After entering the car, turn on the blower and keep the windows open, then switch on the AC cooling after 5 minutes, and close the windows 1 minute after the AC starts cooling.

Myth 2: Turn on internal circulation as soon as the AC is on

Turn on the AC's external circulation first, then switch to internal circulation. When the temperature inside the car is higher than outside, turning on internal circulation will hinder the flow of hot air out of the car. On the contrary, external circulation will make the AC's outlet air temperature lower and also help lubricate the engine. You can switch between internal and external circulation at intervals after the temperature inside the car drops down.

Myth 3: Leave the AC on and wait/sleep in the parked car

This is an extremely dangerous act. When the engine is running, incomplete combustion of gasoline in the cylinders will produce a high concentration of carbon monoxide, which can lead to carbon monoxide poisoning and even death.

Myth 4: Always keep the AC at the lowest fan speed

The AC will suck in a certain amount of dust during use, which forms dirt and develops mold and mildew over time. If the AC is always run at a low fan speed, it's hard to blow out the accumulated dirt inside the AC system. Therefore, turn the AC to the maximum fan speed for about 10 minutes at intervals, which can effectively prevent dust accumulation.

Myth 5: Point the air vents downward

Since hot air rises and cold air sinks, pointing the AC vents downward will cause cold air to gather at the bottom of the car compartment. Without air convection, the interior will feel stuffy. It is recommended to tilt the air vents slightly upward, which can cool the car quickly and bring a more comfortable feeling.

Myth 6: Turn off the engine before the AC

If you turn off the engine first and then the AC, the car will start with the pressure of the AC system when you start it next time, which will add to the engine's load. Meanwhile, bacteria are likely to breed in the AC pipelines and air vents. The correct way is to turn off the AC first, then the engine.

Myth 7: Never clean the AC for a long time

A large number of bacteria will breed in the AC after long-term use. If not removed in time, the germs will be blown into the human body with the AC air, causing respiratory infections. In addition, the cooling effect of the AC will decline if it is not cleaned for a long time. It is recommended to replace the air conditioning filter and clean the AC air ducts regularly, especially in cities with poor air quality.

Myth 8: Leave the AC unused for a long time

Many drivers leave the AC unused for a long time except in summer, which will lead to insufficient lubrication of the AC compressor and may cause pipe leakage. It is recommended to run the AC for a while once a month.