Does the car air conditioner still cool after the engine is turned off?
3 Answers
The air conditioner in the car will automatically turn off after the engine is shut down. The air conditioner is driven by the engine. When the engine stops, the air conditioner will also stop. More relevant information is as follows: Introduction: The car air conditioning device (air-conditioning-device), referred to as car air conditioner, is used to adjust and control the temperature, humidity, air cleanliness, and air flow inside the car cabin to the optimal state, providing a comfortable riding environment for passengers and reducing travel fatigue; it creates good working conditions for the driver and plays an important role in ensuring safe driving. Structure: The car air conditioner generally includes a refrigeration device, heating device, and ventilation device. This combined device makes full use of the limited space inside the car, with a simple structure and easy operation, making it a popular modern car air conditioning system internationally.
When I drive, I often encounter this situation where the air conditioning naturally stops cooling after the engine is turned off. Once the engine stops, the compressor halts operation, and the entire refrigeration cycle is interrupted. You might think the fan is still blowing air, but that's just the electric fan circulating natural or warm air, not cold air at all. This is mainly because the compressor is driven by the engine belt, and the power source is cut off when the engine is off. I've tried using the fan to cool down the car during summer stops, but at best, it helps disperse some of the heat inside the cabin without lowering the temperature. It also drains the battery and might even require calling for roadside assistance. It's advisable to develop the habit of turning off the air conditioning before parking to extend the system's lifespan. If you're considering a new car, some high-end models might offer electric cooling, but most vehicles won't provide cooling once the engine is off.
After driving for so many years, I know that the air conditioning can't cool after the engine is turned off. Once the engine is off, the compressor stops working, and the fan might still spin a few times, but that's not cooling—it's just the fan blowing air. Think about how a car works: the compressor, like a heart, relies on the engine to keep it running. When the engine stops, the cooling stops. Once, I was parked with my family, running the fan, and the battery almost died—luckily, we started the car in time. When parked, remember to turn off the AC settings and avoid leaving the fan on for too long to save battery and stay safe. On hot summer days, it's more practical to roll down the windows for ventilation or start the car before turning on the AC—don't expect it to blow cold air after the engine's off.
