Maintaining visibility in your vehicle can be especially tough in winter months as temperatures drop first below the dew point and then again below freezing. As you probably know car windows get foggy when water condenses on them. This happens on both the inside and outside of the window depending on the season.
Summer Moisture and Window Fogging
Outside humidity can be a problem particularly in Indiana on the hot, stormy days of summer. Water will condense on surfaces when the surface temperature is below the dew point of the air surrounding it. When you get warm, humid air touching a cooler surface you’ll likely see it fog up. When it’s very humid outside and you are running the air conditioner inside, moisture condenses on the outside of windows. Use windshield wipers and your rear defroster to remove condensation there by wiping it off or causing it evaporate.
Prevent Car Windows from Frosting in Winter
In winter, the opposite situation occurs when moisture is on the inside of your car. Colder air outside causes inside moisture to fog inside. When it gets really cold it can crystalize on the inside of your windows and windshield. Check out these three 3 simple hacks to prevent your car windows from fogging and crystallizing by removing the moisture first, then prevent excess moisture from obscuring your view. In first segment, learn how to dehumidify your car with cat litter and socks. You’ll need to fill a pair of socks with cheap kitty litter (the silica crystal kind) and put them under your windshield at night. Next you prepare windows by preventing moisture from accumulating on them with simple shaving cream. Finally, most people use heating and ventilation the wrong way when trying to defog in Winter. Turn on the A/C while setting the temperature control to the highest heat setting.
ALWAYS Clear windows before driving
As a reminder, NEVER drive your vehicle without first clearing snow and scraping ice/crystals off every window surface first! Be sure to have a sturdy ice scraper in your car at all times. In a pinch, you can use an old credit card (VISA, MasterCard, American Express or department store card – you choose!) to scrape windows with just a little ice or frost.