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Automobile Defoggers: Usage and Operation

Defogger

A road trip in your brand-new car, enjoying the freshness of the rainy season, is a perfect way to celebrate your purchase. However, it is essential to remember that driving a car on a rainy day is a whole different experience than driving on any other typical day.

The particular mood killer during these days is fogging on your windshield due to wet weather.

It not only affects your visibility during your drive but can create difficulty and dangerous situations affecting safety. Let us find out more about defoggers.

What is a Defogger in a Car?

Another name for a defogger is a defroster, which is installed in cars to eliminate fog issues. The device helps to remove the accumulated fog on your windscreen, giving you a clear view for safe driving.

The mechanics and design of this device are that it removes ice and condensed water droplets from the front and side windscreens and side windows.

How to Use a Car Defogger?

Defoggers are very common, easily visible, and handy features in cars. Activating the feature is extremely simple, like pressing a button.

So, how do you use a car defogger?

On your dashboard, find 3 upward-facing sluggish arrow signs partially in a box.

You just need to press this button, and the sign illuminates when you press it.

With the press, there is movement of hot air towards the windscreen to clear the accumulated fog.

There are chances you may have two defogger buttons, one for the front windscreen and the other for the rear.

How Does the System Auto Defogger Work?

The auto defogger system works on a simple mechanism where warm air blows on the glass to stop fog accumulation.

When the warm air is blown, it raises the temperature of the glass, not letting the moisture turn into fog. It is an important part of cars’ heat ventilation and air conditioning systems.

Let us understand the working of Auto Defogger through simple classification-

Primary

In a primary type of defogger, the whole mechanism depends on heat ventilation and air conditioning systems.

First, fresh air is dehumidified in the air conditioning system.

Then, dehumidified air is moved towards the heater core.

The heater core pulls heat from the hot water circulating through the engine and moves it to air.

Due to this, hot and dry air forms and is exhaled through the heating core. The air is then passed through different vents, finding its way to the desired windscreen. This type of windscreen is provided to cars which have AC units working on the front windscreen, known as a front defogger in the car.

Secondary

This type of defogger is dependent on the principle of restive electric heating. Car manufacturers attach heating material filament to the glass surface. When you press the defogger button, electricity flows through the filament, creating heat.

Due to this heat, the condensed material on the glass melts, clearing the fog. This type of windscreen is provided to cars for the rear windscreen, and some luxury cars have this system for external rear view mirrors, known as car rear defoggers.

Ways In Which You Can Avoid Fogging of Windscreen

Making use of silica based pellets works like a moisture absorber that helps with fogging.

Using shaving foam on your glass windscreen as it becomes a shield against moisture particles and windscreen glass.

Making use of window cleaners that have added ammonia

Using your AC in fresh air mode also helps against fogging

Keeping your car windows open

Keeping your shoes dry

Using defogger as you start

Managing your temperature to warm settings

Ensuring the exterior of your car windows is always clean

Conclusion 

Before you press the key to start your car, it is essential to ensure all safety precautions are taken, including a working defogger. Though buying car insurance online ensures complete financial safety against unforeseen events, ensuring primary safety is the responsibility of the car owner.

So, before you get your four-wheeler insurance, make sure your car is safe for the roads. Remember to create a checklist of the type of coverage you need for your car.

However, avoid buying cheap car insurance in India, as it may not provide you with the required coverage at the time of need, such as roadside assistance or zero dep car insurance.

Frequently Asked Questions 

Does The Defogger Make Use Of AC?

The primary defogger uses AC. The fresh air is dehumidified in the air conditioning system. Then, dehumidified air is moved towards the heater core. The heater core pulls heat from the hot water circulating through the engine and moves it to air.

Due to this, hot and dry air forms and is exhaled through the heating core. The air is then passed through different vents, finding its way to the desired windscreen.

What Is The Difference Between Defrosting And Defogging In A Car?

The term defrost focuses on removing frost or ice from the exterior of the car’s windows, especially in cold conditions. The term defog focuses on clearing the moisture or condensation that forms on the interior of the windows.

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