Should You Turn Off AC When Turning Off the Car?

2 Answers
BenjaminLee
09/02/25 5:22am
You should turn off the AC when turning off the car. Forgetting to turn off the air conditioning when the car is off will consume battery power. If you don't turn it off before shutting down the engine, it will automatically start the next time you start the car, which will place a heavy burden on the battery and cause wear. Additional Information: 1. Principle: The air conditioning system involves the compressor and blower, and the audio system is also a high-power electrical device. If not turned off before shutting down the engine, they will automatically start the next time you start the car, placing a heavy burden on the battery and causing wear. This is especially true if the car's audio system has been modified, as it consumes more power normally and creates a greater impact on the battery during startup. Therefore, whether it's a temporary stop or a long-term parking, you should turn off the air conditioning and audio system before shutting down the engine. 2. Battery Maintenance: Car owners should pay attention to the condition of the car battery and perform regular checks and maintenance. With the changing driving habits nowadays, there are more and more electrical devices in cars, which increases the pressure on the car battery. Without careful inspection and maintenance, the car battery can easily malfunction. Therefore, car owners must strengthen the inspection and maintenance of the car battery to avoid faults caused by the battery, which can bring trouble to driving.
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HaydenDella
09/14/25 7:30am
Turning off the AC before shutting down the engine is a wise choice. Having run an auto repair shop for years, I've seen many cases. When starting the engine, the load is already heavy. If the AC is left on, the compressor adds extra pressure, which can easily wear out the starter and battery. Over time, this shortens the battery's lifespan. Additionally, moisture remaining in the AC ducts can lead to mold formation, resulting in musty odors and deteriorating air quality inside the car. Developing this habit is simple: When you're done driving, first turn off the AC button, wait a few seconds for the fan to dry the ducts, then turn off the fan speed knob, and finally turn off the ignition. This not only protects your vehicle but also saves you some fuel money. Reducing the load at each startup benefits both your wallet and the environment in the long run. A small action yields significant rewards.
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