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Honest People. Quality Service.

Serving the Texas Hill Country for over 40 years


Why a Furnace Makes a Booming Sound

Let us first start off this blog post with a PSA: a booming furnace is not normal and it should be checked out by a professional. Just because this noise is the focus of this blog post does not mean that it should be ignored, or that you should feel better if your furnace is booming. A booming furnace can quickly become a health and safety hazard, as well as a problem with efficiency, so make sure you have a professional HVAC technician on hand to help you out.

With that being said, we want to zero in on why a booming furnace requires heating repair in Bulverde, and why you need these repairs sooner rather than later. We’ll talk about what’s happening inside your furnace and why this process is a problem if it’s creating unsettling noises nearby.

Keep reading, and remember to call us if you need help!

Why Would a Furnace Make a Boom?

Gas furnaces are one of the most common types of heating systems in the country. They work by burning flammable natural gas in a combustion chamber to produce heat. This heat then gets exchanged with fresh air in your home and cycled into rooms. This is a simplified but pretty accurate explanation of how the process works. Now, why would your furnace make a booming noise?

When the burners of a gas furnace get dirty and covered in soot or grime, the ignition can get delayed. Think about it, the ignition needs to ignite close to where the gas gets injected into the chamber, but if the gas is having trouble easily getting into the chamber, there will be a delay. This causes the gas to ignite all at once and create a small booming noise.

A Miniature Explosion

We don’t mean to alarm anyone, but this is what is happening in your furnace when the gas is ignited. If the gas is being allowed to pool in your combustion chamber before igniting, it means that your furnace is having miniature explosions occur within it. This is bad for the following reason, along with the fact that it can damage other parts of your furnace.

The Potential for a Cracked Heat Exchanger

The heat exchanger is a component in your furnace that’s in charge of separating the fresh, clean air of your home and the fumes of the combustion that just took place. The heat exchanger can take the heat from the furnace’s fire, and exchange it with the air of your home. But when the system is rumbling or booming because of dirty burners, it increases the risk that the heat exchanger cracks. This could lead to fumes and carbon monoxide leaking from your system into your home.

Our Two Solutions

Here are the two best solutions for a booming furnace. Make sure you get either one done soon so you lower the risk to your health and budget.

  1. Maintenance. Maintenance is important because it allows our technicians to clean your system’s burners on a yearly basis. This ensures the problem never occurs in the first place.
  2. Quick repairs. If your furnace is booming, then make sure you call our team to repair it and ensure it’s not endangering you and your family.

Contact D’Spain Sales & Service for help with your furnace system.

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