If you have an AC unit that is making a buzzing noise, there are a few potential causes. It could be something as simple as a loose screw or dirty coils or a more severe problem like a failing compressor. In any case, it’s crucial to identify the source of the problem so you can take steps to fix it.

Learn more about the most common issues you must watch out for when you continue reading.

1. Malfunctioning Compressors

The compressor is the heart of the AC unit; if it’s not working properly, the entire unit will suffer.

A few things can go wrong with a compressor, and each one will cause different symptoms.

If your compressor makes strange noises, it’s probably due to a loose or damaged component. If the unit isn’t turning on at all, the problem is likely with the electrical system. However, if the unit is cooling your home inconsistently, the compressor might be overworked and needs to be replaced.

2. Frozen Evaporator Coils

If you’ve ever noticed your AC unit freezing up, it’s likely because the evaporator coils have frozen. This can happen for several reasons, but most of the time, the AC unit is often low on refrigerant.

When the evaporator coils freeze, it prevents the AC unit from being able to cool your home effectively. The coils must be thawed out before the AC unit can be used again.

There are a few ways to thaw out the coils. One is to turn off the AC unit and let it thaw on its own. This can take a few hours, so it’s not the best option if you’re trying to cool your home quickly. Another option is to use a hair dryer or heat gun to thaw the coils. This is the quickest way to soften the coils, but it can be dangerous if you’re not careful.

Once the coils are thawed, you can turn the AC unit back on, and it may work correctly. If the coils freeze again, you would need to have your AC unit serviced.

3. Electrical Issues

As anyone who has ever had to deal with a broken air conditioner knows, electrical issues can be a major pain. Not only can they be expensive to repair, but they can also be dangerous. That’s why it’s essential to be aware of the most common electrical issues that can occur in AC units and how to prevent them.

The first and most common electrical issue is a tripped circuit breaker. This can happen for several reasons, but overloading the circuit is the most common. To prevent this from happening, ensure you know how much power your AC unit uses and don’t overload the circuit.

Another common electrical issue is a blown fuse. This can also be caused by overloading the circuit, but a faulty AC unit can also cause it. If you suspect a blown fuse, have a service technician check it out as soon as possible.

Fire is the last and most severe electrical issue in AC units. A short circuit most often causes this and can be extremely dangerous. If you suspect a fire, be sure to evacuate the area immediately and call the fire department.

Final Thoughts

There are a few issues that can cause buzzing noises in AC units. These include electrical issues, evaporator coils, or a problem with the compressor. If you notice these things coming from your AC unit, it’s crucial to have a professional look at it to diagnose the problem and ensure it’s not serious.

For air conditioning repair in Lethbridge, don’t hesitate to contact us at 4 Seasons Home Comfort. With over 40 years of experience in air conditioning and heating systems, you can expect only the best from our technicians. Call us today to schedule an appointment.