Problems with your air conditioner? Know the 5 most common solutions

Plumbing, painting, electricity, locksmith, electrical appliances … All the guilds of HomeServe come together in the repair office of 20Minutos , an online corner where I get to work to answer all your questions about the problems of home .

In each session, a guild comes to the fore as a star theme and this time I want to share the most frequent doubts related to your air conditioners .

In this compilation you will find the most practical solutions that I have given to the problems posed by the users, so you will be prepared when an unforeseen event occurs. Here we go!

1) Cleaning the filters
Did you know that, if normal use of air conditioning equipment is made, these devices are easy to maintain? It is important, above all, to keep the filters clean.

Question: I would like to know the maintenance that needs to be done to the home air conditioner so that it works correctly .

This type of domestic machine does not require special maintenance , as long as we see that it works well. However, as a tip, I would tell you that the only important care is to have the filters thoroughly cleaned periodically (approximately once a year).

How can you clean the filters?

In a wall split , the filters appear as soon as you lift the front cover of the appliance. To remove them, you just have to pull them down by lifting a small tab, which you will easily locate. To clean them, with putting them under the shower or using a root brush, is enough. To replace them once they are dry, you just have to undo the previous steps and fit them in their place of origin.

And so that everything is clear, I leave this tutorial:

2) Bad smells when turning on the equipment
The bad odor is produced by multiple causes since the appliances suck or absorb the air from the room they are going to air condition. In this solution I give you the two most common cases I have found.

P: Despite cleaning the grille inside and outside the split, the air conditioner often has an odd smell. What else is there to clean?


The grids that you indicate, I imagine that they are the filters and the casing, and in reality that cleaning is not going to solve the problem of the smell, but I am glad that you have cleaned them ūüėä

When you remove those pieces you will see an aluminum battery inside the device, and that is the part that must be cleaned. Unfortunately, it is not something that can be done at the user level, you will need professional help because it is a delicate piece and also you have to disassemble the whole device.

Air conditioning repair


3) Expulsion of water
Dropping water from your air conditioner is completely normal since they are the result of the evaporation process that takes place inside the machine. But not all enjoy this normality, in this case I tell you the positive and the not so good part of this liquid in your equipment.

Q: My air conditioner releases a lot of water, daily the bottle fills up three or four liters, is it normal?

I have good news for you, that your air conditioner releases water, not only is it normal, but it is also a symptom of good functioning. The amount will depend on the humidity in the environment , but as long as you keep releasing water, you can breathe easy.

If on the contrary it expels water and it splashes inwards, the first thing you should do is to check the water outlet of your device , in case it has been plugged or it is a fault in the installation. If you have a container in the water outlet, it is very important to make sure it is not full, because if it is and it touches the tube, it produces vacuum and goes out to the appliance.

If everything is correct and you continue with the problem, the battery of the equipment may produce some ice due to lack of refrigerant or a problem in the refrigerant pressure. In this case, observe if the battery produces frost to discard this cause and it is most convenient to call a technician to verify it and give you the best solution.

4) The equipment does not cool well

If during the months in which you most need air conditioning, the heat does not give you respite and your equipment does not cool well, it is important that you are prepared. I hope to help you with this answer.

Q:¬†¬†We have a 2×1 and the split of the room simply dismisses air, neither cold nor hot.¬†What can it be?


Clearly you have a breakdown and may be due to many factors. In order to have an accurate diagnosis, it is important that you call a technician to locate the fault, but to help you have the clearest things I am going to list a series of possible failures:

  • Lack of gas¬†.¬†Due to a leak in the refrigerant circuit, either due to a fault in the installation or due to the presence of pores in the pipe.
  • The compressor does not start¬†.¬†It occurs when the fan start capacitor does not turn or due to a fault in the fan motor.
  • Lack of refrigerant¬†.¬†There may be a small leak in the circuit and therefore the machine loses performance.¬†To verify this, a leakproofness test must be carried out.
  • Lack of cleaning in the filters¬†.¬†Go to the first question;)

On the other hand, that does not cool properly is also due to the¬†orientation of your home¬†.¬†That is, if your house has a south orientation, it will be warmer than a north orientation.¬†That’s why you may notice differences with other equipment in the rooms of your home.

5) Noises

The air conditioning can present noise and vibrations in both the outdoor and indoor units. To know some causes, do not stop reading the following:

Q:  My air conditioner makes a very strange and annoying noise after half an hour of wearing it on. It is intermittent and repeats every minute. What can it be?

The noise you tell me may be due to several reasons: lack of gas in the refrigerant line, lack of oil in the compressor or a cleaning problem in the filters.

For the first two cases, it may be convenient to change it for a new one, once the technician has analyzed the state in which it is, the life of the device, the price of a repair …

The noises can also be due to external agents such as small birds that decide to leave their nest in your equipment and in this case, using the air with the nest in the pipes, could damage the engine, as well as damaging the circuit in general.

The best thing you can do is, before turning it on, remove the nest and make sure that there is no debris left to sneak into the computer. And to prevent it from happening again, you can place a fabric or fabric similar to a mosquito net, in the area through which they entered.