What is Causing Your Scary Furnace Noises?
It’s nine O’clock, you’re in bed (hey, it was a long day) and the house is quiet. Suddenly you hear a click and then a subtle noise that gradually gets louder. Is it a screeching? A growling? Or more like a sudden boom that is then gone? Whatever it is, your furnace is not haunted, we promise.
Furnaces, especially older ones, can make a variety of different noises – some of them mean you should get your furnace checked out immediately and some are just normal operation. Here’s a list of a few of the most common scary furnace noises.
- Booming – Sometimes you may hear a boom when your furnace starts. This is caused by a buildup of gas from a delayed ignition. This can be a serious problem and you should call a heating professional to check this out as soon as possible.
- Screeching – Grinding, squealing or screeching noises coming from your furnace are most likely a result of problems with a bearing, belt or the motor. While this isn’t dangerous, if left it can cause larger repairs later.
- Clicking – Some Southern California homeowners report that their furnace makes a constant clicking noise and doesn’t light. Usually, a leaking gas valve or loose wiring is to blame.
- Rattling – If your furnace sounds like it has a screw loose when it is running, it might. Sometimes a rattling noise can be fixed by simply tightening the cover panels. Other times, though, a rattling can indicate a leak in your heat exchanger (which can result in carbon monoxide leaking into your home.)
- Rumbling – There is a slight but discernable difference between a rattling and rumbling furnace. Rumbles indicate that your gas burners are dirty or your pilot light may need to be adjusted.
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When to Get Scary Furnace Noises Checked Out
You should always get new unusual furnace noises checked out by a heating professional as soon as possible. If the noise is new, something has changed and it could indicate a dangerous condition.
Even if the noise doesn’t reveal danger, it is usually an indication of a problem. If not repaired, the small problem can snowball into a larger repair later on. Of course, the best remedy to scary furnace noises is regular preventative maintenance.
Are there noises from your furnace keeping you up at night? Want a straight answer to the problem? Schedule a service with one of our heating professionals today.