Does leaving the car running with the AC on affect the vehicle?

1 Answers
DelMatteo
07/30/25 12:32am
Leaving the car running with the AC on does affect the vehicle. The main impact is: The bad habit of not turning off the AC before shutting down the engine will cause the vehicle to start with the AC compressor engaged during the next ignition, increasing the load. Over time, this can cause some damage to the engine. Additional information: The correct approach should be as follows: A few minutes before reaching the destination, turn off the AC while keeping the blower running. This allows the moisture on the condenser to evaporate, ensuring relative dryness within the AC system, thereby reducing bacterial growth and odor formation. Additionally, the AC should only be turned on after the engine has started.
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