Why Is My Furnace Making a Buzzing Noise?

Have you been hearing a buzzing noise when your furnace kicks on or as it is running? Don’t worry; you’re not the only one to encounter this strange sound. In fact, a furnace that is making a loud buzzing sound is a common complaint that pops up over the winter months.

Your furnace is one of the most essential appliances in your home, keeping your family comfortable and your home safe. So if you’re wondering why your furnace is making a buzzing noise or when to know if you should call for furnace repair services, keep reading.

Rusk Heating & Cooling tells you what might be causing the noise and how to fix it.

Causes of a Furnace Making a Buzzing Noise

When it comes to something as crucial for the operation of a home as a furnace, no problems should be ignored. Several different issues within your heating system can be responsible for furnaces making buzzing noise – here are the most common:

Faulty Capacitor

The furnace capacitor is a cylindrical component that helps to start the blower motor, which is responsible for circulating warm air throughout your home. Over time, the capacitor can become damaged or worn down, which can cause it to make a buzzing noise. In some cases, the capacitor may need to be replaced to stop the noise. However, if the capacitor is still working correctly, it might be possible to clean it and secure it more tightly in place. If you’re uncomfortable working with your furnace, you can always contact a professional for help.

Transformer Issues

A transformer is an electrical device that transfers energy between two or more circuits. Transformers are used to change the voltage of an electrical circuit, and they are found in a variety of applications, including power plants, phones, and computers. In a furnace, the transformer box is responsible for converting the electricity from the power lines into the correct voltage for the furnace.

If the transformer box is not mounted properly, it can cause a buzzing noise – this is often the case when there’s a newer electric or gas furnace making a buzzing noise. In older furnaces, a buzzing noise may also indicate that the transformer needs to be replaced.

Bad Blower

The furnace blower motor is responsible for circulating air throughout the home. If the motor fails, it may make loud noises when the furnace is first turned on. In some cases, the motor may stop working altogether, preventing the furnace from circulating air. In other cases, the motor may work irregularly, causing the furnace to cycle on and off more frequently than usual. If you notice any of these symptoms, it’s important to have a professional diagnose the problem and determine whether the motor needs to be replaced or if it can be repaired.

Loose Duct Connections

Loose ductwork is one of the most common causes of furnace buzzing or a humming sound. As air moves through the ducts, it can cause them to vibrate and produce a buzzing sound. In many cases, this problem can be easily fixed by tightening the screws that hold the ductwork in place. However, if the problem persists, it may be necessary to replace the affected portion of the ductwork as airflow pressure may have damaged the ducts over time.

Why Work with Rusk

When you think there may be trouble with your home’s HVAC system, you should not ignore it. Your furnace is directly responsible for keeping your home comfortable and safe when the weather turns cold. This is why we believe you should do everything in your power to ensure it is running optimally.

When your furnace is not working at maximum efficiency, your house and heating bills can suffer. At Rusk, we are experts at all things heating and cooling. We combine years of experience with decades of knowledge to ensure we do the job right every time. While other HVAC companies may claim they offer similar services, when you work with Rusk, you can feel the difference.

Contact Rusk to Schedule Furnace Repairs Today

If you notice the furnace is making a buzzing noise, it may be trying to tell you something. Buzzing noises are often caused by a problem with the blower motor, transformer box, ducts, or capacitor. It’s important to have these problems fixed as soon as possible, as they can lead to more serious issues down the road.