Troubleshooting the Most Common Car Air Conditioning System Problems

Being stuck inside a car without air conditioning on a hot summer day is no fun. Fortunately, there’s no need to tolerate driving around in a stuffy, uncomfortable car.
We’ve compiled a list of the six most common reasons why your car’s air conditioning may not be functioning as it should.

The six most common car A/C issues are:
• Leaking refrigerant
• Blocked/clogged condenser
• Broken condenser
• Electrical issues
• Faulty cooling fans
• Faulty compressor

You may be able to resolve some of these issues on your own to get your air conditioner back up and running – or at least know the problem before bringing it in to our service department.

Your Car is Leaking Refrigerant

Although it can be difficult to pinpoint the exact location of a refrigerant leak, the most common places where leaks are found are at A/C unit hose connections. It’s often possible to observe an oily substance accumulating around these connections, which is likely the source of the leak. There are sealants specifically designed for car air conditioning units available at most auto parts stores to close the leak. If you’re not comfortable doing this on your own, one of our skilled auto technicians would be happy to help.

The Condenser is Blocked

When your car’s A/C doesn’t have ample refrigerant coursing through the system, you won’t be able to feel any cooled air coming from the vents. The condenser of your car’s air conditioning unit is designed to re-cool hot refrigerant once it’s been compressed. But if the condenser is blocked by some type of debris, then it’s unable to properly cool the refrigerant and your car’s A/C system will operate with overheated refrigerant. This quickly causes the A/C unit to expel only hot air. In most vehicles, the condenser can be found at the front of the car, so it should be easy to visually inspect and see if anything is blocking it. Once the debris is removed, the issue should be resolved.

The Condenser is Damaged or Broken

The condenser is placed in the front of the vehicle which allows it to function efficiently. However, this also leaves it vulnerable to damage from getting hit by objects such as rocks. A broken condenser can be caused by a puncture from road debris going through the grill of your car and damaging the part, or equipment failure. If the condenser is ruptured and is leaking refrigerant, it needs to be replaced immediately to prevent further damage to the system. If there are any noticeable punctures in the condenser upon a visual inspection, generally the only way to resolve the issue is by replacing it. Our Parts Department is available to answer any questions or concerns you may have.

Electrical Issues

Electrical issues can be difficult to diagnose when it comes to an air conditioning system that is no longer working properly. A visual inspection of all the wiring should be done to see if any wires are broken or frayed. If damaged wires are found, they should be mended with electrical tape or replaced altogether. If you’re unable to locate any electrical issues, it may be time to schedule a service appointment so that an experienced technician can make a further diagnosis.

The Cooling Fans are Faulty

Your condenser may not be receiving sufficient cooling when fans aren’t functioning properly. Over time, faulty cooling fans can cause your car to only kick out hot air. The best way to confirm whether a cooling fan is broken is through a visual inspection. Debris on the road can cause cracks in the fan, and replacement is generally the only way to resolve this issue. Other common problems with cooling fans may include blown fuses or other electrical issues. Unless you are an experienced mechanic, these problems may need to be addressed by a professional.

The Compressor is Faulty

Your car’s compressor keeps the air conditioning moving. Without a properly functioning compressor, the refrigerant cannot circulate throughout the system and your car will not be getting cool air. A common reason for a faulty compressor involves long periods of inactivity. Lack of use tends to ‘shock’ the system when it is used again, which often happens after a car has been sitting dormant all winter long.

Car Air Conditioning Repairs in Chicago, IL

Just like every other part or system in a vehicle, regular maintenance keeps your car’s A/C in optimal working order and extends the lifespan of your vehicle. Are you having issues with your car’s cooling system? Our highly trained service technicians are happy to help!
Schedule an appointment with our Online Service Scheduler today.