3 Reasons Your Heating System Is Making Noises

As a homeowner, you may be well aware of the fact that your furnace does not make a lot of noise when it is running. It is designed this way. However, what you may not realize is that as the system ages, it may begin to make some noises. When units create noise, it's usually because they require heating repairs. In some cases, these noises may be indicative of the need for a complete heating system replacement. If you know some of the noises you should be listening for, you will be able to save some of your time, effort, and hard-earned money.


When you turn your heating system on, you may notice that it makes a whooshing sound or a click. This is 100 percent normal. However, if your heating system makes a loud boom, then this is serious, and you should contact a professional immediately. As a general rule, the boom is a result of an imbalanced air-to-fuel ratio or a clogged burner. Either of these issues will cause the gas to build-up prior to the furnace igniting, resulting in the risk of small explosions and significant property damage. A professional can inspect the furnace to determine if burners require replacement and any issues with the flow of gas.


At any time that you hear loud banging or rattling noises when the heating system starts its cycle, it is cause for concern. More often than not, the heat exchanger has suffered a crack, which poses a risk of a carbon monoxide leak. This is very dangerous for your health, so you need to immediately turn the heating system off and keep it off until a professional can perform a full inspection. Now, if the rattling noise occurs while the heating system is in operation, then the issue is not quite as severe. The noise is simply alerting you that there is a loose connection within the ductwork.


At the end of a heating cycle, you may notice that your furnace makes a long rumble noise that feels like it shakes your entire house. This type of rumbling may be indicative of oil or gas still burning within the combustion chamber once the burners have switched off. Generally, this means that you have a problem with the pilot light or the burners are worn out. In either case, there is a risk of carbon monoxide being leaked into your home, which is dangerous. So, if you hear a rumbling, even if it is faint, get in touch with a professional immediately.

For more information, get in touch with a heating repair service in your area.