The Correct Method for Defogging a Car in Summer
4 Answers
You can select the front window defogging mode, adjust the fan speed to the maximum, and then set the temperature to the lowest. The fog on the glass will disappear shortly. Mix dishwashing liquid and water in a 1:10 ratio, and apply it to the inside of the front and rear windshields with a soft, clean cloth. First, clean the inside of the front windshield thoroughly, then spray on an anti-fog agent. After it solidifies, wipe it clean with a clean towel.
In summer, when defogging the car, I usually start the vehicle and immediately turn on the AC in cooling mode. I set the fan to high speed and direct the cold air toward the windshield to quickly remove moisture and fog. High humidity in summer makes fogging common, so switching to external circulation to draw in dry outside air is also crucial. Setting a lower temperature enhances the effect. Regularly cleaning the glass with a damp cloth to remove grease or dust helps prevent fog buildup. For safety, don’t forget to activate the rear defogger, which significantly improves driving visibility. Personally, I like to open the windows for ventilation before parking to avoid trapping moisture inside, reducing fogging before the next drive. Overall, this routine is simple and practical—once you get into the habit, defogging becomes effortless.
As someone who frequently studies automobiles, I prioritize air conditioning system efficiency for summer defogging: immediately turning on the AC dehumidification mode after starting the engine, adjusting the airflow direction to the windshield vents, as high-speed cold air can quickly condense and remove fog. The principle is that refrigerated air dries moisture, and using external circulation is better to prevent internal humidity cycling. I recommend setting the temperature to the coldest and occasionally using anti-fog spray as a preventive measure. For maintenance, regularly checking the cabin air filter ensures system health. These methods effectively maintain clear visibility and enhance driving safety.
For defogging, I always use simple methods: In summer, turn on the air conditioner with cold air blowing at the windshield right after starting the car, and increase the fan speed for faster dehumidification. Crack the windows or use the external air circulation to improve airflow and reduce fogging. Don’t forget to clean the glass thoroughly—less oil and dirt means less fogging. Buy an affordable anti-fog spray as a backup for reliable results. Make it a habit, and you’ll handle it effortlessly.
