Why Does My Air Conditioner Smell Bad? A Complete Guide!

You must be wondering why sometimes air conditioner smells bad? However, it is a common issue in air conditioners. Many people have faced this.

Air Conditioner Smell Bad

There are several smells that you experience. Different odors have different causes behind them. Here we discuss the different smells and their reasons.

Also, you get a guide on what to do when you experience such smells.

Different Types of Smell From Air Conditioner

Cigarette Smell

You can get a cigarette smell from your air conditioner. However, it is self-suggestive. If you smoke inside your house or anybody in your house smokes, then you get this smell.

 It is that the compressor picks up the smoke particles. However, the air gets filtered, but in case of the smell, it remains. Therefore, you get the smell.

What to do?

This is nothing to worry about as you can easily handle it. You need to change the filter, and it will relieve you of the cigarette smell. 

Generally, it is advisable to replace the filter twice a year. However, in the case of the cigarette smell, it is better to replace the filter when you experience such a smell.

Rotten Egg Smell

If you experience your air conditioner smells like rotten egg smell despite not having any rotten egg at home, it is a gas leak from your AC.

Sometimes, the gas pipes loosen and crack, leading to a gas leak.

Now, this smell is deliberately added to alert the users about the gas leakage.

What to do?

Call a professional or a technician if you are experiencing it for quite a long time. This gas is harmful to your health.

Moreover, prolonged exposure can even lead to death. 

Immediately you can open the windows, and fresh air can come in. Later on, you must call a technician.

Chemical or Exhaust Fumes Smell

The exhaust fumes are a result of leakage fluids from your AC. The exhaust fan spreads the fumes inside your room.

Also, it can affect your health as well.

Chemical or Exhaust Fumes Smell

On the other hand, the chemical odor can be a result of fluid leakage. Your AC has several fluids inside, helping in cooling purposes.

What to do?

Immediately call a professional as it affects your health and depletes oxygen as well. Therefore, call for a technician quickly.

Burning Smell

A burning smell from your AC indicates that there has been a short circuit. As the AC is a large unit with numerous smaller components working together.

Therefore, any dispute in any of the parts affects the entire system.

What to do?

Switch off your AC when you experience such smells.

Call a technician or even a fire department if you find the same smell when you switch on the machine again.

Musty Smell

Musty smells are due to the molds and mildew growth. As you operate the AC, condensation creates a lot of moisture.

This generally travels through the drain pipes.

Sometimes, when the moisture is unable to escape, it results in molds. 

This moisture and the temperature inside the AC is ideal for mildew breeding and other bacteria. Thus, it results in a musty odor from the AC.

What to do?

It is not easy to find out molds and mildew as they grow slowly.

Moreover, while they grow, by the time you might get used to the smell. When a visitor comes and finds out a different scent, you get to know about it.

Call for an immediate inspection. The expert will check everything, and if anything is to be done, he will mention it.

A Bad Smell

Sometimes, you might find that your air conditioner is emitting a bad smell. It is neither of the above smell as mentioned.

This foul smell can be a result of dirt accumulation. If the filter has not been replaced over one year then, the dirt accumulates.

What to do?

Manually remove the filter. Clean the filter with a jet of pressurized water through it. This might help in removing the foul odor.

Final Words!

Thus, to sum up, it is better to clean the air conditioner unit at least once every year.

However, do not try to clean it yourself, especially when you find foul smells emitted from the unit.

Hope this article was helpful to you.

If you have any questions please ask them in the comment section below. We will surely try to answer them.

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