Air conditioners are integral to most households, yet many homeowners need to be made aware of the common problems that can occur. Knowing what signs to look out for can help you catch and fix any potential issues before it becomes a larger problem. Here are common air conditioning problems that you should look out for.

1. Not Blowing Cool Air

One of the most common signs that something is wrong is if your air conditioner isn’t blowing out cool air as it’s supposed to. There are a few reasons your air conditioner may not be blowing cool air. The most common causes are a dirty or blocked filter, low levels of coolant in the system, or a damaged fan or compressor.

Additionally, the air ducts may be blocked, or there could be an issue with the thermostat. A professional HVAC technician is always recommended to inspect the system to determine the exact problem and develop the best solution.

2. Loud Noises

If you hear strange noises from your air conditioner, this could be a sign of a problem. Loud noises usually indicate issues with the fan or compressor, and should be checked and repaired as soon as possible.

One of the most common causes of loud noises from your air conditioner is an issue with the fan or compressor. Other possible causes include broken or loose components, worn-out bearings, or incorrect assembly. If you hear loud noises coming from your air conditioner, it’s best to have it inspected right away, as this can help you avoid further problems.

3. Poor Airflow

Poor airflow from your air conditioner can be caused by a blocked or faulty ductwork system. The ducts may be clogged with dust and debris, or walls and other obstructions may block the airflow. Moreover, the thermostat may be set incorrectly, or the air handler may be damaged. If you suspect an issue with your airflow, it’s best to have an experienced HVAC technician inspect and fix the system.

4. Short Cycling

Short cycling occurs when your AC keeps starting and often stopping instead of running for a continuous time. Several factors, such as a dirty or blocked condenser unit, incorrect thermostat settings, or an overworked motor, can cause this. Getting it fixed as soon as you detect this issue is essential to prevent any further problems.

5. Inconsistent Temperatures

Sometimes the temperature in different parts of the house may be inconsistent, even if the thermostat is set to the same temperature. Various things can cause inconsistent temperatures in different parts of the house. Poor insulation or faulty wiring can cause warm or cold spots in the house, while a malfunctioning thermostat may cause the temperature to vary.

6. Electrical Problems

Electrical issues are one of the most common problems when it comes to air conditioning. Worn-out wiring, a bad compressor, or a faulty circuit board usually cause electrical problems in air conditioning units.

In other cases, the AC unit may not be getting enough power. It’s important to check if all the connections are working properly and if there is a power overload. If the problem persists, it’s best to consult with a professional HVAC technician.


Knowing what common air conditioning problems to look for can help you avoid bigger issues. If you suspect that there might be an issue with your system, it’s always best to get it checked out by a professional. They’ll be able to diagnose the problem and suggest the best course of action.

Looking for an air conditioner service in Louisville, KY? Thompson Heating & Cooling is your trusted source for AC repair and maintenance. To ensure quality whole-home comfort services, we use some of the best products from manufacturers such as Ruud, Mitsubishi, ClimateMaster, and Nest. Contact us today to schedule an appointment.

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