The smell from the air conditioner, which cannot be called pleasant, usually appears some time after the installation of the device. Sometimes he is very strong. This fact does not allow using the device, bringing significant inconvenience. The unpleasant smell from the air conditioner is not uncommon in a car. Many car owners suffer from it.
Causes of unpleasant odors from the air conditioner
For the operation of the device, which is intended to create a comfortable temperature regime in the room, a heat exchanger is provided on its indoor unit. What is the principle of its action? During operation of the air conditioner, the temperature of the heat exchanger is much lower than that to which the air in the room has warmed up. Moisture resulting from the formation of condensate is discharged into a drain pan and removed through drainage pipes. In the air of the room there are always various microorganisms and dust. In contact with condensate, they form a beneficial nutrient medium. After that, microorganisms begin to multiply actively, which becomes the reason that there is a smell from the air conditioner.

Condensate can be removed from the device directly into the sewer. In the event that no siphons are installed at the same time, a smell also arises from the air conditioner of the house. Stench from the sewer system is sucked into the room. Sometimes this problem also appears in the presence of a siphon in which the water has dried. This is possible with a long break in the operation of the device. After turning on the air conditioner, you should wait a bit. After the condensate fills the siphon, there will be no penetration of unpleasant odors.
There is another reason that does not allow the use of the device. The air conditioner device does not provide air intake from the street. He drives in a circle the one that is in the room. In the event that there is a source of any aromatic substances in the room (new furniture, synthetics, plastic or plastic), the air conditioner itself becomes a source of these odors.
If you smoke in the car while the appliance is working, the smell of an ashtray will float in the air. This will happen due to the settling of cigarette smoke on the heat exchanger. The drainage system of the air conditioner can be blocked by flying fluff. Moisture is not removed, and not clean air is blown into the cabin, but a mixture of it with water.
How to eliminate odor from an air conditioner
Modern devices are equipped with a function that allows you to delay turning off the fan when the device is turned off. This allows you to drain the heat exchanger, which will prevent the formation of an unpleasant odor. If this function is not in the air conditioner, you should manually turn on the ventilation mode for a while. If the smell from the air conditioner appears as a result of stagnation of water from improper installation, then it can be eliminated only with the alteration of the drainage system.
We acquire special equipment
If microflora is present on the heat exchanger, an antibacterial treatment of the device should be performed. To perform such actions in specialized stores should purchase professional tools. They are processed and car air conditioners. To eliminate microflora on the heat exchanger, medications intended for disinfection can be used. For example, the tool "Lysol." Some models of air conditioners provide for the installation of antibacterial filters. If an unpleasant odor occurs due to pathogenic microflora, they require immediate replacement.