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License: #888103

Serving Fresno, Clovis, and surrounding communities.

License: #888103


Sounds You Definitely Don’t Want to Hear From Your Furnace

Monday, January 20th, 2020 at 11:00 am

It can be quite easy to ignore some, if not most, of the sounds that the appliances in our homes make. However, certain sounds should definitely not be ignored, especially when they come from your furnace.

See, there are a number of sounds you certainly do not want to hear coming from your furnace, and below, we have listed some of them for you. All you have to do is keep reading to find out more (and yes, remember to schedule your furnace repair in Clovis, CA with our team!)

Be Wary Of…

Like we mentioned above, there are a number of sounds you don’t want to hear from your furnace:


A loud screeching sound is likely a sign that the blower motor in your furnace is not working properly. Now, this might just mean that the blower motor is in desperate need of lubrication, but it could also suggest the fan has stopped altogether. To properly diagnose this situation, it is important that a local HVAC technician visits your home. Once diagnosed, they can advise you on what steps need to be taken next.


If it sounds like metal-on-metal, this might be an indication of a serious problem with the furnace’s blower wheel. If this is the case, you must turn off your furnace and contact a professional immediately to prevent further damage to the wheel. More damage to the wheel means more damage to your wallet!

Bangs and Booms

Typically, the bang or the boom you might hear coming from your furnace is indicative of a dirty burner, which can be dangerous. The noise you hear is caused by a delay in ignition due to dirt and build-up. Remember, cleaning the burner yourself is not recommended — there is a lot of room for error, and you don’t want to spend more money in the long run. It is always safer to call in a professional, especially when dealing with gas.


Rattling doesn’t seem like a very threatening sound, right? Wrong. If you are hearing a rattle coming from your furnace, don’t just assume it is a loose panel or screw… you might just be dealing with a faulty heat exchanger. This is quite serious, as a cracked exchanger can create a carbon monoxide leak in your home!

Call a Professional Right Away!

If your furnace begins making any strange noises, it is in your best interest to contact a certified HVAC professional as soon as possible. Trust us, only a professional has the tools, training, and expertise to safely and correctly handle the complex needs of your system, the first time around.

And yes, there may be plenty of amateurs willing to provide these services for a fairly cheap price, but remember, sometimes an attempt to save money could end up costing you much more in the long run! See, when it comes to your comfort and your budget, you don’t want to take any risks!

Schedule your heating repairs with the team at California Indoor Comfort Inc. today! 

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