How to Prevent Your Car Windshield from Fogging During Cool Weather

29 August 2016
 Categories: , Blog


If you have experienced a windshield fogging during cool weather, then you know how frustrating the problem can be. Worse than a mere inconvenience, a fogged-up windshield is dangerous and preventing fogging is an important safety measure to take. Below are a few tips  to keep your car windshield clear and safe in cool weather:

Coat your windshield with a homemade fogging inhibitor

Before you even step into your vehicle for a drive, take a few minutes to apply a fogging inhibitor to the interior of the windshield and rear window, as well. You can make your own inhibitor by adding one teaspoon of dish soap with two cups of water and adding a few drops of vegetable oil to the solution. Gently mix the solution to avoid foaming.

Applying the fogging inhibitor is easy; simply dip a microfiber towel into the solution and use it to wipe the interior of the windshield in a circular motion. Don't use too much of the inhibitor, as it will only take a thin film to keep the fog from forming. In addition, allow the inhibitor to air dry before driving, and keep in mind that you may need to reapply the solution once every few weeks or so.

Know how to use your climate control system properly

Today's vehicles possess fairly sophisticated heating and air conditioning systems, and they have a few built-in features that can help reduce the incidence of windshield fogging. However, you need to know how to use these features in order to maximize your efforts. Here are a couple of general principles to keep in mind:

Utilize your air conditioner—While it may not seem intuitive to use your car's air conditioner in chilly temperatures, it is important to keep in mind that much of the fogging inside your car occurs due to your own exhaled moisture. Air conditioners excel at removing water vapor from the air, and this feature will help keep your own moist breath from accumulating too much. In most vehicles, you can operate the air conditioner at any temperature point, so don't be afraid to turn it on with the heat adjusted upward.

Keep fresh air moving inside your car—Another helpful hint for using your car's climate control system is to avoid allowing air to stagnate. Even though the recirculate feature can help keep the warm air inside the vehicle, it ultimately can lead to fogging if overused. The water vapor can accumulate to high levels if the system's recirculate button is left in the 'on' position for too long. That is why you should periodically turn off the recirculate button to replace humid interior air with drier exterior air.

To learn more about how to take care of your windshield all year round, contact services like Allstate Glass.