How to Deal with Frost on Car Windows in Summer?

[Catalina]

Here are the methods to deal with frost on car windows in summer: 1. Open the windows: The formation of frost is due to the temperature difference between the cold outside and warm inside. In most cases, the temperature inside the car is higher, especially when the car is full of people, and frost forms very quickly. Opening the windows for ventilation and allowing air to flow between the inside and outside of the car can alleviate the phenomenon of frost on the windows. 2. Apply commercial glass anti-fogging agent: Commercial glass anti-fogging agents can be sprayed directly onto the glass, forming a transparent protective film that effectively prevents moisture from condensing on the glass. Typically, such anti-fogging agents remain effective for about a week after one application. 3. Homemade anti-fogging agent: Car owners can dilute household dishwashing liquid with water at a ratio of 1:6, or mix shampoo, shower gel, etc., with water at a ratio of about 1:10, then wipe the car windows with a soft cloth soaked in the solution. After the solution dries, wipe it clean with a dry cloth.

[SabrinaRose]

I've encountered several times in summer when the car windows fogged up due to the stark temperature difference between the cold AC inside and the intense heat outside, suddenly making the windshield misty and obscuring the road. Immediately pressing the defog button to turn on the AC cooling directed at the glass clears the fog in seconds—it's especially effective. When parking, I try to find a shady spot under trees to avoid direct sunlight, which causes significant temperature differences and moisture buildup. Before getting in the car, opening the windows for a while to let in fresh air and cool down also helps prevent fogging. When cleaning the glass, don’t cut corners—wiping it with soapy water can create an anti-fog layer, which is both cost-effective and practical. On rainy days when fogging is more likely, I increase the fan speed to expel the humid air, keeping the view clear and ensuring safe driving, especially since summer driving accidents are more common—this trick really comes in handy.

[LeCora]

Here's my money-saving solution for dealing with foggy car windows in summer. Running the AC wastes fuel and hurts my wallet, so first try opening the windows to allow air convection between inside and outside the car for natural cooling and dehumidification. If the fog doesn't clear, quickly turn on the defogger function - just blowing air will do. Usually, I keep a small dehumidifying bag in the car to absorb excess moisture at low cost with good results. When parking in summer, choose shady spots to reduce condensation caused by temperature differences. I also use a white vinegar and water solution to wipe the windows, creating a protective film that makes it harder for fog to form. When encountering fog again, I can handle it quickly without panic, restoring clear visibility without using cold air - saving fuel and being more environmentally friendly. This method is simple, practical, and quite reliable.

[ElizabethLee]

In summer, when the air conditioning is on, the large temperature difference between the inside and outside of the car often causes fogging on the windows. The core issue is the mismatch between temperature and humidity. Simply pressing the defog button with the AC on, setting the cold air to blow towards the windows, can quickly reduce humidity and solve the problem. The key is to regularly check the air conditioning system to prevent clogged filters from affecting efficiency. Cleaning the windows to remove oil buildup helps prevent worsening fogging. Using professional anti-fog sprays provides long-lasting effects, but daily maintenance is more important. Act immediately when fogging occurs to ensure safe driving visibility. These small steps are highly targeted and easy to implement.