Should the air conditioner blow hot or cold air to defog the car in summer?
2 Answers
If the car fogs up in summer, you should use cold air to defog. Whether it's summer or winter, opening the windows can quickly remove fog from the car. When defogging, it is recommended to turn the air conditioner's fan speed to the maximum, as this provides better defogging effects and faster defogging speed. 1. Defogging methods: The front windshield is defogged using the air conditioner, while the rear windshield is defogged using electric heating wires. When the rear windshield defogger is turned on, the electric heating wires will start working, but they will stop after a while to protect the wires. 2. Precautions: In winter, it is recommended to set the air conditioner temperature to the highest and the fan speed to the maximum for defogging. In summer, it is recommended to set the air conditioner temperature to the lowest and the fan speed to the maximum. To prevent the windshield from fogging up, you can buy anti-fog sprays to apply on the windshield. These sprays can effectively prevent fogging on the glass and rearview mirrors.
I usually drive to and from work, and often encounter the problem of fogging up inside the car during summer. At that time, the car is warm and a layer of white fog forms on the windows, which is quite dangerous. My experience is to directly blow cold air. Because hot air initially makes me more uncomfortable and can worsen the fogging. Specific steps: turn on the air conditioning, set it to the lowest temperature, increase the fan speed, and direct it towards the front windshield. It usually takes about one or two minutes to clear the fog. At the same time, I open the window or sunroof slightly to ventilate and reduce the humidity inside the car. Remember, safety first—when fogging occurs, avoid sudden braking or lane changes, and slow down gradually until visibility is restored. Summer weather changes quickly with high humidity, so this method works very well for me, as the car's air conditioning system is naturally suited to handle such situations.
