Why Is My Furnace Making Strange Sounds & What Does It Mean?

There are several reasons why your furnace might be making strange sounds and each sound can indicate a different problem with the furnace, ranging from minor to very serious. One way to ensure your furnace is always ready when you need it is to schedule regular furnace maintenance with Climate Control Company. 

While regular tune-ups can’t keep your furnace from wearing out with normal age and use, it can provide opportunities to catch minor issues before they become major problems. Neglected furnaces typically fail prematurely or at minimum necessitate the need for frequent repairs.

Here are some common unusual sounds made by furnaces and their possible causes:

Banging or popping noises: This can be caused by delayed ignition, a clogged burner or a malfunctioning control valve. A cracked heat exchanger can also pop and bang and is a serious issue and requires immediate attention.

Whistling or screeching noises: These sounds can indicate a problem with the blower fan, such as a belt that needs tightening or a bearing that needs lubrication. It could also mean there is a blockage in the air ducts, which is reducing airflow and causing the noise.

Rumbling or vibrating noises: These sounds can indicate a problem with the furnace’s combustion chamber, such as a build-up of creosote or a malfunctioning oil nozzle. It could also be a sign that the furnace is not level and needs to be adjusted.

Humming noise: This is a normal sound for a furnace, but if it is louder than usual it can indicate a problem with the blower motor, such as a worn out bearing or a lack of lubrication.

If your furnace is making strange sounds, it is important to have it inspected by a professional to determine the cause of the problem and to ensure that it is operating safely and efficiently. Ignoring strange noises can lead to a breakdown of the furnace, which can be both expensive and inconvenient.

The skilled technicians at Climate Control Company can inspect your furnace to learn the cause of your noise problem. Call our office today to schedule an appointment.