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Heating, Cooling, Wine Cellars | Birmingham, AL


Don’t Ignore These Four Furnace Noises

Furnace noises, like car noises, are not something to be ignored or neglected. Ignoring a furnace noise that could potentially be a sign that something is wrong, is the perfect way to ensure your system breaks down in the future. For vigilant homeowners that are trying to save as much money as they possibly can on keeping their home comfortable, this simply is not an option.

So, let’s theorize that you’ve been hearing some unsettling noises come from your furnace. If you’re one of those homeowners that get stressed out at the thought that your system might be having some trouble—let us help you out. We’re going to go over some of these uncomfortable noises to detail what they could mean and then recommend the best solution to these problems from a professional standpoint.

When it comes to furnace repair in Birmingham, AL, don’t panic, let the pros shed some insight.

The Typical Sounds of a Furnace

Aside from the gentle whooshing of air escaping your home’s vents, a furnace shouldn’t make any noise. This means the sound you’re hearing from your furnace is indicative of a problem that needs to be addressed. Now, as to what problem we’re talking about, that heavily depends on what sound you’re hearing!


Booming, from a layperson to a professional HVAC technician, means the same thing—an explosion. Now, before you panic, we mean a pretty small explosion that’s occurring in your furnace’s heat exchanger that’s probably the result of a delayed ignition. This sound is caused by too much gas pooling in the combustion area before the ignition finally reaches it and sets it alight. This could be caused by a dirty burner or some other more sinister issue. Contact a professional to have it fixed today.


When your ignition turns on normally, it makes one singular clicking sound that you’re probably familiar with. However, if you’re hearing a repeating clicking noise, that could signify a faulty flame sensor or an issue where the ignition is having trouble lighting your gas. You’re going to want a professional to address this immediately.


This is a noise that also occurs in cars on occasion, but it usually relates to a rubber belt that’s starting to fall apart. A professional technician is going to have to replace the belt and make sure your fan motor is working adequately as well.


Every homeowner can probably detect the sound of something small being loose in their furnace since that rattling sound is pretty infamous. However, pinpointing what has gone loose and where is an issue that only a professional HVAC technician can solve. Don’t hesitate on getting this problem addressed because that small rattling could quickly compound into a much more devastating issue. If your rattling furnace has turned into a grinding furnace, then you’re system might seriously be approaching a breakdown.

Regardless of what your furnace sounds like, it’s most likely suffering from an issue that only a professional HVAC technician can fix.

Contact the pros at Sullivan Service Co to take care of your furnace today!

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