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Listen for Strange Furnace Noises this Winter

As winter gets into full swing, the stress on heating systems across the country is going to increase. This includes furnaces, which run the risk of developing all sorts of different problems under the strain. Heating problems get progressively worse the longer they are allowed to continue, so it’s a good idea to call for repairs as soon as you notice an issue. One of the easiest ways to tell whether or not your furnace is having an issue is to listen for strange noises coming from the system. Read on for some of the more common noises you need to listen for.


If your furnace sounds like a cannon going off every time it starts up, don’t worry. There’s likely nothing dangerous going on. It’s likely that your burner assembly is in need of some cleaning. Carbon particles build up on the burner assembly over time, eventually preventing one or more of the jets from lighting on time. When the delayed jets do ignite, they burn through all the gas at once and create that booming sound that you’re hearing.


A furnace uses a part called the “air handler” to move air throughout the house. The air handler is essentially a large motor, with a fan attached to it. The air handler motor is put under a lot of stress during operation, so it is equipped with lubricated bearings to help mitigate the friction. As these bearings wear down over time, the friction on the air handler motor increases. This produces a loud grinding sound while the furnace is operating. If the bearings aren’t replaced in time, the air handler motor will overheat and burn out.

If you think your furnace is in need of repairs, call Celco Heating and Air Conditioning. We offer a full range of furnace repair services throughout Stamford, CT.

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