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Comfy Heating & Air Conditioning Inc. Blog

Get Your Smoking Furnace Fixed ASAP

Smoke is never something you want to see inside your home. It’s a major disruption, and in pretty much all cases signals trouble. This is certainly the case when it comes to furnaces, where smoke can be a telltale indicator of a problem that needs to be addressed. In most cases, this will have to do with a functional issue, like a broken-down component or overheated system. In this article, we’ll review some of the most common reasons furnaces emit smoke.

Just remember that your home’s safety and comfort should be the highest priorities. Take some time to investigate the air quality and scent of your air and make sure you call a professional when you encounter a smoking furnace. Our team has what it takes to alleviate the problem and keep you safe.

The Dangers Of Ignoring Furnace Smoke

Whatever the cause, smoke from your furnace is always a cause for concern and necessitates your immediate attention. Not only is it a major disruption, but it can also be dangerous. Inhaling smoke can be harmful to your health, and in some cases, it can even be fatal. It’s also terrible for your furnace, as the longer you let the smoke linger, the more damage it will do.


One of the most common reasons for furnace smoke is a malfunctioning burner. The burner is responsible for igniting the fuel that powers the furnace, and when it’s not working properly, it can cause smoke. Usually, this is due to a dirty or clogged burner, which can be cleaned relatively easily. However, in some cases the problem may be more serious, requiring a replacement burner.

Heat Exchanger

Another common reason for furnace smoke is an overheated heat exchanger. The heat exchanger is responsible for transferring heat from the burning fuel to the air that’s circulated through the home. When it gets too hot, it can cause the metal to warp and smoke to start coming out of the furnace. If this is the case, the exchanger will need to be replaced.


In some cases, a problem with the blower can also cause furnace smoke. The blower is responsible for circulating air through the home, and when it’s not working properly, it can cause the furnace to overheat and generate smoke. If this is the case, the blower will need to be repaired or replaced.

As you can see, there are a number of different reasons why furnaces might emit smoke. If you’re experiencing this problem, it’s important to identify the root cause and take steps to address it. Otherwise, the smoke could lead to further problems and even damage your home. If you’re not sure what’s causing the smoke, it’s always best to consult with a professional. They’ll be able to diagnose the problem and recommend the best course of action.

Looking for quality heating repair in Walnut Creek, CA?

Give the team at Comfy Heating & Air Conditioning Inc. a call for expert support with your gas furnace.

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