Many car owners will have the concept that the air conditioner filter is to filter the air impurities in the car without affecting the use of the vehicle itself. For the purpose of saving cost, it is often thought that as long as the dust accumulated on the filter element is blown off, it can be changed into a new one for continuous use, and there is no need to replace it. So is this really the case?
The filter element with clean surface can be blown and used continuously.
The air-conditioning filter element is the same as the air filter element. If it looks dirty, it needs to be replaced. If it doesn’t look dirty, you can blow it and continue to use it. However, if the air conditioner filter element is not changed for a long time, it will produce odor, and the air conditioner will have a moldy smell. At this time, even if it is not dirty, it is recommended to replace it, which may have bred bacteria.
Blowing is not recommended if the filter element is too dirty.
Why is it not recommended to blow because the filter element is too dirty? Because you look like the filter element is made of paper, in fact, it has several layers, which belongs to deep filtration, that is to say, there are many intercepted pollutants on the surface of filter paper, and there are many dirt in a large number of deep channels and interlayers of filter paper. And these deep dirt can’t be blown out.
Harm of not changing air filter for a long time
The air filter element filters the air entering the engine. The engine always needs a lot of air, which is mixed with gasoline and burned in the cylinder, so it needs clean air. If the air enters the engine directly without the filtration of the air filter, then the dust, sand and other particles in the air will enter the cylinder, which will accelerate the wear of the cylinder.
Air filter can be blown, but oil filter can’t.
There are four filters in the car, namely air filter, air conditioning filter, oil filter and fuel filter. The ones that can be blown and used continuously here mainly refer to air filters and air-conditioning filters. Although these two services are different, they mainly filter the dust in the air, and the dust accumulates to a certain extent, and the intake resistance is great.
The oil filter and fuel filter filter the tiny particles in the oil and fuel. Because they are wrapped in a metal shell, the inside is also covered with oil and fuel, which is not as easy to clean as the air filter, so they can’t be blown and can only be replaced.
Correct method of blowing filter element
Because the filter element is fragile and easy to be damaged, it is necessary to have skill in blowing the filter element. First of all, use a soft brush to brush off the leaves and dust on the surface, and then blow with an air gun. The air pressure of the air gun should not be too high, generally only between 0.2 and 0.3 MPa, otherwise the filter element will be blown out.
In addition, it is necessary to blow against the reverse side of the filter element, because if it is blown on the front side, this part of dust particles has passed through the filter element. However, large dust particles may scratch the pores of the filter element, resulting in the filtration function of the filter element being weakened.