Why Is My Furnace Making a Loud Noise?

Sounds from your furnace don’t always indicate a major problem. However, if you’ve recently noticed some loud, strange sounds from your heating system, chances are the unit needs a professional tune-up. So what exactly could be the cause of all that noise? Let’s look at some of the potential causes of loud sounds in a furnace.

The Blower Wheel Is Broken

Does your furnace produce a noise like metal scraping against metal? The most likely reason is that the blower wheel of your furnace is broken. As soon as you hear this noise, turn off the furnace right away and call [company name]. It’s highly likely that you’ll need to replace the faulty part. Don’t panic, though, as this is a relatively easy repair.

The Burners Are Dirty

Do you hear a loud bang from your furnace? The most likely cause is a dirty burner, and you need to be concerned. Dirty burners can delay ignition, causing the gas to build up instead of igniting immediately. After the buildup of gas, the spark causes a small explosion inside the furnace. The best way to avoid this is by scheduling regular professional maintenance.

The Blower Bearings Are Worn Out

A high-pitched squeal from your furnace is commonly the result of worn-out bearings on the blower motor of your furnace. Generally, blower bearings can last for decades with proper maintenance. Once they wear out, however, they need immediate replacement to do away with the loud whining.

The Transformer Is Faulty

If you notice a humming sound coming out of your furnace, it’s likely the transformer starting to go bad. The majority of transformers make some humming sound. However, if the noise is so loud that you hear it when you’re standing near your furnace, it’s time to get the transformer checked.

Strange noises from your furnace could indicate that something is seriously wrong. Notify [company name] immediately so our licensed and experienced professionals can assist you right away. For more than 60 years, we’ve brought tailor-made HVAC solutions to the residents of Meridian and beyond. Contact us today to learn more about our reliable heating and cooling services.