Why Is My Air Conditioner Not Cooling: Common AC Problems

Why Is My Air Conditioner Not Cooling: Common AC Problems

- in Home Improvement
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We only start to appreciate our air conditioners once the hot summer days set in. Not having your AC working properly during this season can cause a lot of headaches and turn days into nightmares. What would you do if you AC stopped working in the middle of a summer day?

Don’t panic! Experienced companies like Hughes Air can easily detect and fix the issues that might be causing your air conditioner to malfunction. In fact, you may be able to handle some of these issues yourself.

In this article, we’ll give you a short guide explaining the most common air conditioner failures behind the air conditioner not blowing cold air and how to handle them.

Air Filter

The most common answer is also the most obvious one. Still, a lot of homeowners don’t realize how important it is to regularly replace the air filters in your air conditioner. The filter helps keep debris and dust out by only letting the cold air into your room. But not replacing your air filter can lead to it clogging, which in turn prevents air flow inside your AC.

In this case, the evaporator coils won’t get enough air and might get too cold or even freeze over. You’ll recognize this by the fact that your air conditioner is not blowing cool air.

You can find the air filter behind the front grille in most cases. Depending on the manufacturer, you’ll have to either clean or replace the air filter. During the summer, you should make sure to clean or replace the filter at least once a month.

Fan or the Fan Motor

If the air conditioner is not blowing cool air, and your air filter is clean, the next suspect would be the fan. The fan draws air over the evaporator coils and returns the cooled air back into the room. If the fan is not running, the coils can freeze over.

You’ll find the fan and the fan motor inside the unit. Make sure the motor turns and the blades are intact. If the motor is not working or the blades are damaged, you will need to replace them. However, before you sign them off, make sure to consult a professional AC repair company as they have advanced diagnostic tools that can help pinpoint the problem.


Next on the list is the thermostat, in charge of temperature control. This device monitors the temperature and controls the compressor. A special sensor modifies the room temperature and adjusts the temperature accordingly. It also cycles the compressor once the set temperature is reached. However, if this piece of equipment is damaged it may not give the right signal to the compressor, affecting the cooling.

Make sure to inspect the sensing bulb to see if there are any signs of damage like ruptures or kinks. If needed, replace the bulb with a new one.


Another reason why your air conditioner might not be supplying enough cold air is due to a faulty compressor circuit. Capacitors are what starts the compressor, and if they malfunction the compressor can’t start. As a result, your air conditioner will only blow hot air. Both the capacitor and the compressor are inside the unit and you will need to open the AC to find the issue. If there are not any visible signs of damage on the capacitor, you’ll need to have an expert take a second look at the issue.

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