April 21, 2025
Auto

Why you should always turn on the air conditioner fan when driving on a dusty road

  • June 29, 2022
  • 0

With the onset of summer heat, many motorists began to go to the beaches and cottages more often and simply travel more often. At the same time, the

Why you should always turn on the air conditioner fan when driving on a dusty road
With the onset of summer heat, many motorists began to go to the beaches and cottages more often and simply travel more often. At the same time, the path to the rest area may be partly along a dusty country road. And here many are faced with a dilemma: turn off the climate system so that it does not draw dust into the cabin, or is it enough to close the windows? The AvtoVzgdyad portal has figured out how to make it so that you do not sweat and do not breathe dust.

Dust, pollen – summer causes car owners no less trouble than winter. Dust that accumulates directly in the car interior should be cleaned almost daily. And if you often have to drive on country roads or get stuck in traffic jams, where there is free space for “obochechniks” throwing up columns of dust, then cleaning becomes not just a daily ritual, but an hourly ritual. As a result, car owners are trying to figure out ways to reduce the amount of dust entering the cabin. And one of the recommendations is a method where the climate system is completely turned off while driving on a dusty country road. Is this the right decision?

Let’s start by learning one simple truth: a car is not completely sealed. Dust still enters the cab, if not through open doors and windows, or through seals and the climate system (even if it has a filter). If there is a lot of dust outside, that means there will be plenty of it inside no matter what. And even if you turn off the climate system by stopping the fan, the flow of litter inside the car won’t stop. In addition, it will even increase. And there’s an objective reason for that.

Yes, yes, with the heater or air conditioning turned off, there will be more dust in the cabin. And damn physics is to blame. The thing is, when you drive over a dusty “intersection” with the climate system fan turned off, the pressure inside the car and outside will be the same. In other words, it will not be difficult for small dust particles to penetrate into the gaps between the door seal or into technical holes in the car body.

Now let’s remember what happens when a smoker opens the window a little – cigarette smoke immediately flows out. And this is due to the difference in air pressure inside and outside the car. This also works when the air conditioner or the heater fan is on.
When the fan spins, although it is a bit, it creates overpressure in the passenger compartment. This makes it much more difficult for road dust to penetrate where it is literally being pushed from. Due to this effect, there will certainly be less dust in the cabin than if you save the cabin filter by switching off the climate system.

The bottom line is: when driving on rough terrain, close the windows and doors of the car more tightly, turn on the air conditioning fan (you can even do two or three), and drive slowly, not afraid that you also breathes a lot of dust, even though your car is driving forward. Better to replace the cabin air filter one more time than sweat it out, thinking you outsmarted everyone.

By the way, do you know why many motorists prefer to drive with open windows instead of air conditioning in the heat? The answer will surprise you to say the least.

Photos from open sources

Dust, pollen – summer causes car owners no less trouble than winter. Dust that accumulates directly in the car interior should be cleaned almost daily. And if you often have to drive on country roads or get stuck in traffic jams, where there is free space for “obochechniks” throwing up columns of dust, then cleaning becomes not just a daily ritual, but an hourly ritual. As a result, car owners are trying to figure out ways to reduce the amount of dust entering the cabin. And one of the recommendations is a method where the climate system is completely turned off while driving on a dusty country road. Is this the right decision?

Let’s start by learning one simple truth: a car is not completely sealed. Dust still enters the cab, if not through open doors and windows, or through seals and the climate system (even if it has a filter). If there is a lot of dust outside, that means there will be plenty of it inside no matter what. And even if you turn off the climate system by stopping the fan, the flow of litter inside the car won’t stop. In addition, it will even increase. And there’s an objective reason for that.

Yes, yes, with the heater or air conditioning turned off, there will be more dust in the cabin. And damn physics is to blame. The thing is, when you drive over a dusty “intersection” with the climate system fan turned off, the pressure inside the car and outside will be the same. In other words, it will not be difficult for small dust particles to penetrate into the gaps between the door seal or into technical holes in the car body.

Now let’s remember what happens when a smoker opens the window a little – cigarette smoke immediately flows out. And this is due to the difference in air pressure inside and outside the car. This also works when the air conditioner or the heater fan is on.
When the fan spins, although it is a bit, it creates overpressure in the passenger compartment. This makes it much more difficult for road dust to penetrate where it is literally being pushed from. Due to this effect, there will certainly be less dust in the cabin than if you save the cabin filter by switching off the climate system.

The bottom line is: when driving on rough terrain, close the windows and doors of the car more tightly, turn on the air conditioning fan (you can even do two or three), and drive slowly, not afraid that you also breathes a lot of dust, even though your car is driving forward. Better to replace the cabin air filter one more time than sweat it out, thinking you outsmarted everyone.

By the way, do you know why many motorists prefer to drive with open windows instead of air conditioning in the heat? The answer will surprise you to say the least.

Source: Avto Vzglyad

Leave a Reply

Your email address will not be published. Required fields are marked *