How to Defog the Car Interior in Winter?

[JakeFitz]

Winter car interior defogging methods include: 1. Open both side windows; 2. Turn on the air conditioning's external circulation; 3. Adjust the air vents to defogging mode; 4. In winter, use the air conditioning's cooling and dehumidifying function to reduce air humidity; 5. In summer, use the method of reducing temperature difference to remove fog; 6. Wipe with a cloth dipped in dishwashing liquid or soapy water. The reason for fogging inside the car in winter is: Due to the large temperature difference between the inside and outside of the car, the temperature inside the cabin is higher than outside, causing water vapor inside the cabin to condense on the inner windshield, forming fog. Methods to prevent fogging inside the car include: 1. Use an anti-fog cloth to wipe; 2. Spray anti-fog agent in advance.

[DeStephanie]

I've been driving for over a decade and often encounter fogging issues inside the car during winter. The simplest and most effective method is to switch the air conditioning to defog mode, which automatically increases the airflow directed at the windshield, clearing the fog in just a few seconds. If the fog isn't too heavy, cracking open a window for ventilation can solve the problem while also saving some fuel. Remember not to keep the recirculation mode on all the time, as poor air circulation makes fogging more likely. After starting the car, let it warm up for a minute or two to reduce the temperature difference between the inside and outside. For safety, don't try to wipe the fog while driving if it's too thick—use a cloth or anti-fog spray instead. Develop the habit of dealing with fog immediately after getting in the car for a more secure drive. Regularly clean the windows to prevent dirt buildup, which also helps reduce fog formation.

[LeMicah]

When driving kids to and from school, fogged-up windows can be dangerous as they obstruct visibility. I've found that turning on the heater immediately after starting the car and setting it to blow on the windshield clears the fog in two to three minutes. If you're in a hurry, spraying some defogger can last for several days, which is quite convenient. Cracking the window open slightly for ventilation also helps, but be cautious in winter to avoid the kids catching a cold. Avoid using the recirculation mode for too long; instead, switch to fresh air mode to let in dry air and reduce humidity. Safety first—if the fog is heavy, pull over to deal with it instead of taking risks. I also recommend using an anti-fog cloth for wiping; it's low-cost and lasts longer. For health, regularly clean the car interior to reduce moisture sources.

[FelixDella]

My car has an automatic defogging button; pressing it activates the AC to blow strong air for quick fog removal. In older cars, just turn on the AC and set it to defog mode, increase the fan speed, and it works quickly. Avoid using recirculated air to prevent stuffiness and fogging—opt for fresh air intake instead. Sometimes, cold air defogs faster than warm air, but it might be uncomfortable in winter. The key is to maintain similar temperatures inside and outside the car. Preheating for a few minutes before driving helps. From a safety perspective, prioritize clearing fog as it impairs visibility—don't delay.