Why Is My Air Conditioner Not Blowing Cold Air?

Why Is My Air Conditioner Not Blowing Cold Air?

Check Your Air Filter

A major reason why your air conditioner is not blowing cold air is because it lacks adequate air flow. In a perfectly working air conditioner, the fan draws air over the evaporator coils, where it is cooled, and then, re-circulated back into the room. If the air filter is dirty or clogged, there may be little or no air flow over the evaporator coils, which may also cause them to become too cold and icy thereby restricting the flow of air even more, and at the end stops the circulation of air into the room.

Your air filter is usually located behind the front grille which may have a side access opening. Ensure to remove gently and clean. You can also replace with a new one if the old one is worn out. If your evaporator coils are also dirty, then you should use soapy water and soft brush to clean gently. We often recommend a change of air filter every once in a while to get your air conditioner in best shape and performance.

Don’t miss the Fan Motor

If your air conditioner refuses to blow cold air after checking and performing some necessary adjustment on your air filter, then it’s time to go for an inspection on your fan and fan motor. In a good working air conditioner, the fan draws air over the evaporator coils, and then re-circulates the air back into the room. If the fan refuses to run or is running too slow, it would reduce the quantity of air sent over the evaporator coils which causes the coils to become cold and frosty, restricting the flow of more air.

The fan and fan motor are located inside the unit so you may be required to open the cabinet before accessing them for inspection. If the fan blades are rusty, dirty or damaged, you’d have to replace with a new one and if the fan motor doesn’t turn easily or is seized, then it’s time for a replacement. We strongly advise that you employ the service of a professional to help you fix that.

Investigate Your Capacitor

In the quest to search for an answer to why your air conditioner doesn’t blow out cold air, you’ve probably checked your air filter, your fan and fan motor to be working just fine. What else could you be missing out? Your compressor circuit!

Most air conditioners depend on a capacitor to help start the compressor. If the capacitor fails to help, the compressor won’t start and will result in the fan blowing only warm air.

You can always find both the capacitor and the compressor inside the cabinet of the air conditioner and you’ll need to remove the cover to access them. Sometimes, the capacitor may not show a sign of damage which is why you’ll be needing the help of a professional who will use a testing equipment to test its current performance. If you need to change the capacitor, ensure the new one has the same specifications has the old one to avoid compatibility issues.

Always check the Thermistor

The thermistor is a good place to check for when your air conditioner refuses to give you the cold, quality air you need to stay comfortable. The thermistor is found on electronic control models and monitors the incoming air temperature and signals the main control board to turn the compressor on or off.

The thermistor is usually located in the air flow near the evaporator coil. A defective thermistor will not send a proper signal to the control board to turn the compressor circuit on. You may have to replace the thermistor if you find any signs of damage or corrosion.

If all of these processes seem too complicated for you, then we might be able to help out. We provide free professional advice to help you stay comfortable for as long as you wish. Give us a call on 02084320900 or use our contact form to describe in details what the issue is and we’ll get back to you as soon as possible.

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