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How to Prevent Engine Heat from Entering the Vehicle?

2 Answers

AidenRose

09/01/25 5:34am

Check whether the seal of the air conditioning system's air box is in good condition to prevent heat leakage, and reseal the air box if necessary. Before turning off the air conditioning, adjust the temperature knob to the lowest position and select the internal circulation mode.

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KaydenMarie

09/13/25 8:16am

To prevent engine heat from entering the car, I've summarized some practical methods after several years of driving experience. The most basic one is to quickly turn on the air conditioning's recirculation mode after starting the car, which effectively blocks the hot air around the engine from blowing in. I remember one summer when I went to work and forgot to turn on recirculation—hot air kept rushing in as I drove, making me sweat profusely from the stuffiness. Now I've developed the habit of switching to recirculation mode right after starting the engine. It's also important to check if the door and window seals are damaged or aged. If they're loose, you can temporarily patch them up with some sealing tape. When parking, choose a shady spot to avoid prolonged exposure to the sun; less heat buildup in the engine means a lower risk of hot air entering the car. Before turning on the AC, you can open the windows to let out the hot air for a minute or two, then close them and start cooling—this saves fuel and feels more comfortable. Overall, maintaining good sealing is the top priority—don't slack off and neglect it.

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