Having your aircon not cool your home or room properly can seem like a catastrophe especially in very hot and humid weather conditions. You would want to get to the bottom of the problem and fix it as soon as possible so you can enjoy the cool and comfortable indoor atmosphere.

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There can be several reasons why your aircon is not cooling properly. These are discussed in the following sections.

1. Is The Aircon Capacity Sufficient According To The Dimensions Of The Area Where It Is Installed?

If you have recently installed a new aircon and you notice that it is not cooling properly, the problem may lie in the fact that the aircon size and capacity is smaller for the area it is meant to cool. Each aircon is designed to be effective for a certain room size. If the room size exceeds that capacity, the aircon will never be able to cool it properly.

The solution to this problem will be to get a bigger capacity aircon that would be sufficient for that particular room size during aircon installation.

2. Has The Aircon Been Installed Correctly?

If you recently installed a new aircon and it is not working properly, one reason could be that it has not been installed properly. If you have checked that the aircon’s capacity is sufficient according to the room size, then there might be a problem with the installation.

The solution in this case would be to call professional aircon installers who will check to see if there is any problem with the installation and fix it.

3. Is The Air Filter Of The Aircon Clogged?

Another common reason why an aircon may not cool properly is its air filter being clogged. The air filter is easily visible in the indoor unit of an air conditioner. With use, this air filter can get clogged from dirt, dust, and debris in the air. Such a clog can affect the cooling of the aircon as it would not be able to throw cool air indoors with the same capacity.

The solution to this problem is to remove the air filter from the aircon unit and clean it. You can even wash it thoroughly, wait for it to dry, and insert it back into the aircon. The cooling should then be improved.

If it doesn’t, this is where you may need either an aircon chemical wash or overhaul service to chemically clean these impurities.

4. Is The Level Of Coolant Sufficient?

One reason why an aircon might not be working properly is that the level of coolant or refrigerant may have decreased or depleted. The coolant flows through the condenser and evaporator coils of the aircon. This helps in cooling the air which is eventually thrown inside the room. If the level of this coolant is not sufficient, the condenser coils will not be able to cool the air properly.

The solution to this problem is to top up and refill the coolant, after which the aircon would be able to cool the room properly.

5. Is The Aircon Compressor Working Fine?

One of the most common problems because of which an aircon might not cool properly is a defect in the compressor. The compressor is the main unit of the aircon that is responsible for the cooling mechanism. Its function is to compress the refrigerant or coolant and circulate it through the evaporator and condenser coils. If the condenser becomes faulty, it is unable to carry out its function, thus affecting the cooling of the aircon.

The solution to this problem is either getting the compressor repaired or replaced if repair is not possible.

6. Are The Condenser Coils Clogged Or Dirty?

If the condenser coils get clogged from dirt or debris, the aircon will not be able to cool properly. The condenser coils are responsible for dissipating the outside heat and helping to cool the air. If they become clogged, they will not be able to carry out the heat dissipation process, which would result in a decrease in the aircon’s efficiency.

Condenser coils need to be cleaned regularly in order for the aircon to keep functioning properly.

7. Is The Thermostat Working Properly?

If the thermostat of the aircon becomes faulty, the aircon will not be able to function properly. The thermostat is the part of the aircon which senses the temperature of the room and turns on or turns off the compressor accordingly to maintain a particular temperature. If the thermostat becomes faulty, it may not be able to turn on the compressor at the right times which would result in a decrease in the efficiency of the aircon.

The solution to this problem is to get the thermostat repaired. If repair is not an option, then it will need to be replaced for the aircon to start functioning properly again.

8. Is The Outside Unit Dirty?

If the outside unit of the aircon is clogged from leaves, debris, and other types of dirt, the condenser will not be able to absorb the outside air which is then cooled and thrown inside. The outer unit should have sufficient room to breathe.

The solution to this problem is to regularly clean the outside unit with a blower. You can also use a water hose to thoroughly clean it. All kinds of debris and dirt will get washed off giving the outside unit enough space to breathe.

9. Is The Motor Of The Fan Working Properly?

If the motor of the fan becomes faulty or breaks, the fan will not work properly. This means that the air will not be able to flow through the indoor unit. The common sign of a faulty motor is no apparent air coming from the indoor unit of the AC.

The solution to this problem is to get the fan motor repaired or replaced. A professional should be called who would inspect the fan motor and determine if that is indeed faulty or not. In the case of a fault, the professional will take out the fan motor and fix it. After replacing the fan motor with the one that is working properly, the aircon should also be able to cool effectively.

10. Lack Of Insulation?

Another reason where you might think that your aircon is not cooling properly could be the lack of proper insulation of the room. If the room is not insulated properly, all the cool air inside the room will travel outside and the hot air from outside will enter inside. This will result in an increase in the temperature of the room and can cause one to think that the aircon is not cooling properly.

The solution to this problem is to properly insulate all the windows and vents in the room. The door of the room should be shut tightly so that no cold air could escape from the room.

These are some of the common problems which might affect the efficiency of an aircon. Some of these problems you can diagnose yourself and try to fix them but for the others, you would need to call for professional help. The aircon repair and service professionals can properly find the exact problem that is causing your aircon to malfunction.

Once they identify the exact problem, they would be able to fix it so your aircon can start functioning properly once again. A useful way in which you can prevent problems from arising in your aircon is to service it regularly. Again, regular aircon servicing should be employed so you can be assured that the task will be carried out with diligence and efficiency.

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