What Does a Broken Heating System Sound Like?

A broken heating system can have a lot of different sounds, depending on the problem. At Brody Pennell Heating & Air Conditioning, we know how to use these sounds to find the problem and provide an effective solution. Below, we explain what different sounds can mean for your heating system.

High Pitched Squealing Noises

Is your furnace making a high-pitched squealing noise? You could be dealing with a couple of different problems.

One common reason for a squealing furnace is a broken belt. This often needs a full replacement.

Another potential cause is an improperly lubricated shaft bearing. This particular problem will also likely require a replacement, but the best way to determine what your furnace needs is to contact a professional to schedule an inspection.

Abnormally Loud Humming Sounds

Your furnace is going to hum when you first turn it on. This hum is a normal part of the system’s operation, especially if you’re turning it on for the first time since last winter. So, when is a hum a sign of trouble?

Abnormally loud or continuous humming could indicate a faulty inducer motor or a worn fan in most cases. While the hum may not be as annoying as high-pitched squealing, you should still call a professional as soon as possible to fix the issue before it turns into something more expensive and problematic.

Consistent Whistling When the System Is On

What does a broken heating system sound like? If you hear a whistling noise, it could be the ductwork rather than the heater. 

Whistling ductwork could mean leaks in the air ducts, blocked vents, or a clogged air filter. In any case, you should schedule a repair with a professional to keep the problem from getting worse and more expensive.

Loud, Annoying Banging Sounds

A loud banging sound can be an obvious — and annoying — sign of heater issues. Several things can cause this, with one of the most worrisome being ignition problems. 

These banging noises could also be due to expanding and contracting ductwork, but fortunately, this is a normal part of heater operation and is not a cause for concern. If you’re not sure what’s causing the banging, reach out to a professional.

Silence Your Noisy Heater With Brody Pennell Heating & Air Conditioning

Any of the above heater noises call for professional attention, even if you don’t think there’s a major problem. It’s always better to be safe than sorry, which is why we waste no time responding to your call and bringing everything we need for successful heater troubleshooting. 

What does a broken heating system sound like? A malfunctioning heater can cause several different sounds, so call our experts as soon as you notice a squealing, banging, or rattling HVAC system. 

Call (424) 455-0173 for heating service! Get the help you need.