Is it okay to start the engine and turn on the AC without driving?
2 Answers
After starting the car, you can turn on the air conditioning without driving. Idling operation: After the motor vehicle is started, the vehicle idles, and the air conditioning system can be turned on. The air conditioning system can operate normally without any impact. At this time, the engine speed will increase, fuel consumption will rise, and the engine noise will become louder. How to use car air conditioning: To use the air conditioning in a motor vehicle, the vehicle must be started. After starting, press the AC switch to activate the air conditioning system. Adjust the air outlet position, set the gear, and adjust it to the low-temperature zone to use the air conditioning. For models with automatic air conditioning, simply press the AUTO button, and the air conditioning will operate automatically. At this point, you only need to adjust the vehicle's air conditioning temperature to use it normally.
As an auto mechanic, I often get asked similar questions. It's perfectly fine to start the engine and turn on the AC without moving the vehicle, but attention to detail is crucial: Starting the engine before activating the AC is standard functionality, relying on the engine to power the compressor for normal cooling performance. However, prolonged idling with the AC on increases fuel consumption, averaging 1-3 liters per hour, and may lead to insufficient battery charging—especially in older vehicles where batteries are prone to draining. It's advisable to limit this practice to short durations, such as waiting at traffic lights or for someone for up to 10 minutes. Additionally, ensure the vehicle's cooling system is functioning properly to prevent engine overheating and carbon buildup, with proper ventilation being key. In summary, occasional use for emergencies is acceptable, but regular maintenance of the battery and engine will enhance durability.
