LifestyleWinter driving woes: Tips to combat icy car windows from inside

Winter driving woes: Tips to combat icy car windows from inside

Many drivers struggle with frozen car windows in winter. This problem is not only irritating but also makes safe driving impossible. Why do windows freeze from the inside, and how can you deal with it? We provide some tips!

Why do car windows freeze from the inside?
Why do car windows freeze from the inside?
Images source: © Getty Images | Marizza

Freezing windows from the inside surprises many drivers, especially in winter. Although it might seem like an unusual situation, it is quite common and easily explainable. The main culprit is moisture that accumulates inside the car.

While driving, when the outside temperature is low, and the inside of the car is warm, water vapour condenses on the windows. This happens because the heat rising inside the vehicle meets the cold windows, causing moisture to condense. The condensed vapour freezes when the car is parked in the cold after the drive, forming ice inside.

What causes windows to freeze from the inside?

One of the main factors causing window freezing is bringing moisture into the vehicle. Wet clothes, snow-filled shoes, or even water vapour in the air can contribute to this phenomenon.

A poorly functioning ventilation system, a clogged cabin filter, or improper air conditioning can also be the cause. They can significantly increase the humidity level in the car, leading to moisture settling on the windows.

How to prevent car windows from freezing?

One of the simplest ways to prevent windows from freezing from the inside is to ensure good ventilation in the car. When you finish your journey, it's worth opening all the doors for a moment, allowing cold air to ventilate the vehicle's interior. This helps eliminate moisture and reduces the risk of windows freezing.

How to defrost a frozen car window? A practical tool is mechanical frost removal. Standard scrapers may not be effective, but flexible plastic cards, like old loyalty cards, are extremely useful. They conform to the curvature of the window, effectively removing frost and leaving a clean surface.

Using spray or atomizer de-icers is not recommended since the liquid may run down onto the dashboard, and de-icers have a strong and unpleasant smell.

If you want to avoid frozen windows in the future, it's important to take care of a few key aspects of the car. Regular maintenance of the ventilation and air conditioning systems is essential. A clean cabin filter and a properly functioning air conditioning system will prevent moisture condensation on the windows.

To keep the inside of the car dry, avoid leaving wet clothes and shoes inside. If possible, use rubber mats instead of textile ones, as they retain moisture less easily. Consider placing a moisture absorber in the car—a simple method that significantly improves comfort during winter mornings.

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