Air conditioning systems operate using a combination of electric components. During installation or if the unit happens to be old, wiring problems can occur not only causing damage to the unit but also discomfort. Let’s discuss some common AC wiring problems along with symptoms to help you diagnose the problem so you can call in AC repair services when required. Let’s begin.

AC Wiring Problems

Faulty Wiring

Faulty wiring is one of the most common AC wiring problems. If you have recently installed a new AC and observe that it is struggling to perform at its peak, it most likely means there is a problem with the wiring even though air conditioning wiring networks are quite simple to follow and install.

However, if the task is performed by an amateur, the chances of wiring complications popping up in the future increase manifolds. On the other hand, it could also be that your air conditioner is simply old and was repaired by someone who did not give much attention to the wiring system.

The problem with faulty wiring is that it can cause a serious fire hazard. Air conditioning systems are designed to utilize a systematic flow of current. If there is major fluctuation, it not only causes the circuit breaker to trip but also short out. As a result, a fire could break out.

Furthermore, wiring issues can also be caused due to installation of a faulty capacitor, fuse, or thermostat. If you notice that your circuit breaker regularly trips while the air conditioner is running, it is most likely due to wiring issues.

And, in the worst-case scenario, your air conditioner would simply fail to turn on.

Loose Connection

Believe it or not, loose connections contribute a lot to AC wiring issues. Then again, such circumstances usually occur during installation. Once the air conditioner has been installed, it is the job of the expert to perform a final check to make sure there aren’t any loose connections.

If there are, the electrical components will lose contact with the power source and the unit will fail to perform. Plus, if the situation is ignored, it could also cause malfunctioning which could lead to expensive repairs or replacements.

Exposed Wires

Exposed wires are a normal case with relatively old air conditioners. Just as air conditioners have a lifespan attached to them, so do the wires. Over time, these wires tend to crack, bend, or simply become exposed if rats or other intruders chew on them.

Exposed wires are a big problem since they can lead to electrocution and fire hazards. Moreover, it could also damage other components if it comes in contact. That said, if you spot a naked wire lurking around the air conditioner, you should not touch it.

Call in an expert and get it fixed. if you have a commercial building, consult commercial appliances repair services.

What Causes AC Wiring Problems?

AC wiring problems are caused by several factors. Here are a few.


Rats and other intruders contribute a fair share in AC wiring problems. If you live in a region where using the air conditioner all year long is not necessary, these animals tend to intrude and make themselves at home. In most cases, they find their way through holes and cracks and can be tricky to spot as they do not produce any noise while chewing or moving around.

Furthermore, air conditioners that are mostly ignored tend to experience such problems more regularly. The reason is the holes and cracks in the walls are ignored and soon, these animals tend to raise a family that not only chews on the wires but also causes other electrical issues.

Exposure To Fumes & Moisture

Fumes and moisture are the enemies of not only the wires but the entire unit. If you live near a lake or any other area where industrial waste is dumped, do not be surprised if your air conditioning system rots in a few years.

Excessive exposure to both moisture and fumes tends to corrode the components. This is why homeowners living near such sites tend to be burdened with replacing the air conditioners every few years.

Unfortunately, you cannot do much in this situation as corroding will take place one way or the other. Additionally, it could also lead to chronic lung diseases since the air you inhale will contain toxic fumes.

What Are the Signs of AC Wiring Problems?

Air Conditioner Turns Off Unexpectedly

If your air conditioner is turning off unexpectedly, the first thing you should check is the main power supply. Sometimes, the unit loses contact with the power source due to a loose connection. If that does not work out, try to plug in other electric appliances to see if the power source is the problem.

If the appliances run without any problems, it means the issue is with your air conditioner. You should call an expert and check for blown fuses, damaged wiring, etc. At the same time, check the circuit breaker as well.

Switch it on and if it trips again, it means something is interfering with the current, causing it to spike.

Constant Circuit Breaker Issues

A circuit breaker is a simple electric component that prevents a unit from getting damaged incase there is a huge electric spike. It prevents an appliance from overheating and catching fire. However, that is only during extreme conditions.

However, if everything is working perfectly, circuit breakers hardly ever trip. But if it comes to your observation that the circuit breaker is suddenly tripping constantly, it means either the circuit breaker is improperly sized or something is loose.

In case of an improperly sized breaker, you will need to replace it.

How to Prevent AC Wiring Problems?

Regular Maintenance

The best way to ensure your air conditioning system remains trouble-free for years to come is to perform regular maintenance. Think of it as an investment. Instead of saving a few dollars, hire an expert and get your unit maintained and serviced at least twice a year, depending on the usage.

AC maintenance is not only limited to cleaning the unit but also repair, replacement, and identification of faulty wires, fuses, or other minor but important components. This is necessary since fuse and wire-related problems are difficult to spot in most cases and will strike when you least expect them.

The last thing you would want is your air conditioning system to give up when it is blistering hot outside. In the meantime, you should also perform weekly checks on your air conditioning systems to prevent any fire hazards or breakdowns in the future.

Hire An Expert

Most homeowners are of the view that hiring cheap services will save them a few bucks only to find out that the damage caused as a result is way more significant. This is why you should always hire a licensed technician to sort out your AC-related issues.

There is no doubt that the services offered by experts are expensive but it will ensure optimum health of your air conditioner for years to come and is the best way to make the most out of it.


Concluding, AC wiring issues can be irritating and complicated to spot. However, if you perform regular checks and have an expert from HVAC repair services on your side for annual maintenance, you won’t have to worry about these problems. Make sure to follow the tips mentioned above if your air conditioner decides to act unusual one morning. topac