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7 Noises Your Heater Should NEVER Make

Hvac Technician Performing Maintenance On Condensor

Heaters, furnaces especially, can easily succumb to problems during the winter. We put so much strain on them, and depend so heavily on them, that they can quickly become overburdened. When this occurs, it can be very helpful to keep your ears peeled. Many furnace problems can be noticed by the noises they make, and once you’ve pinpointed the specific type of problem you’re dealing with, then it becomes much easier to get a professional on the case.

Today, we’re going to zero in on seven noises that a furnace can make and how you can better understand them. By coming to terms with some of these problematic noises, you can have an easier time scheduling furnace repair with our team of professionals. We’ve got your back and will go above and beyond to fix your furnace this year.

Noises to Listen for

Alright folks, it’s time to talk about the heater noises that we loathe. While these might make you stressed out upon first experiencing them, don’t forget that our team is available to help when you need it. Just call us and describe the problem so we can help get to the bottom of it.


A banging noise can be alarming, and it can usually represent either a large component that’s gotten loose and needs to be repaired, or a delay in the ignition which we will get to in a second.


When you turn your furnace on, is there’s a slight delay and then a booming noise that sounds like an explosion? Well, we don’t mean to alarm you, but it probably is a miniature explosion! Sometimes grime can build up on the ignition system that ultimately leads to a delayed ignition. Get this addressed quickly before it harms another component of your system.


This noise is obviously the sound of metal hitting against other metal components. While it might sound extremely offputting, it’s likely going to get worse if you don’t get it fixed as soon as possible. Your blower fan could be hitting the blower house casing, or there could be other damage within your heater.


If you were to take a small screw, put it in a metal box, and shake it around, it would probably rattle—right? Well, this isn’t much different. A rattling indicates a screw or bolt has come loose and probably needs to be fixed.


A squealing furnace could signal that there’s a frayed belt inside the system, similarly to when a car starts squealing. Luckily, this is one of the easier and less expensive repair needs you can get done.


When you turn your heater on, is there a creaking noise that echoes through your home? While you should probably still get your heater checked, it could just be the air ducts expanding and contracting as the temperatures drastically change in a short amount of time.


Stop, turn off your heater, and call us. A screaming heater is never good, and the louder the noise, the worse the problem is. No need to run it multiple times to get to the bottom of it, just let the professionals handle this one.

The team at GRmetro Heating and Cooling Inc is well-equipped to deal with your furnace woes. Contact us today!


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