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Why Does My Furnace Make a "Boom" When It Starts Up (and Should I Be Worried)?

man troubleshooting a furnace
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Does your furnace make a startling "boom" noise when it starts up? If you're a homeowner in Waukegan or anywhere in the Greater Chicagoland Area, this is a question you might have pondered. While it's not always a cause for panic, understanding why this happens and why there is cause for concern is crucial. This blog post will shed light on the possible reasons behind this noise and guide you on the necessary steps to take.

Delayed Ignition: A Common Cause

A possible culprit behind the booming sound is delayed ignition. This happens when the burners in your furnace fail to ignite immediately, leading to a buildup of gas. When the gas eventually ignites, it can produce a miniature explosion, resulting in a booming sound.

Over time, these small explosions can damage your furnace, so it's best to have a professional HVAC technician inspect your furnace to solve any underlying issues causing the delayed ignition. You especially want to avoid any damage to the heat exchanger, a crucial component that keeps carbon monoxide out of your home's indoor air supply.

Dirty Burners: Disrupting the Flow

Another potential cause of the boom noise is dirty burners. As time passes, dirt and debris can accumulate on the burners, interfering with the proper flow of gas and air. This disruption can lead to delayed ignition and the resultant noise.

Regular furnace maintenance, including cleaning the burners, can help prevent this problem. To keep your furnace in peak condition, we recommend scheduling annual maintenance with a reliable HVAC company like Kern Heating & Cooling Co. once a year, each autumn.

When to Take Immediate Action

If a strong smell of gas accompanies the boom noise, you must act immediately. This could indicate a gas leak, a serious safety hazard. In such instances, turn off your furnace and evacuate your home. Wait until you are safely outside to contact your gas utility provider and a professional HVAC technician promptly to address the issue.

In conclusion, a boom noise when your furnace starts up is often a result of delayed ignition or dirty burners. While it may not always signal a major issue, it's vital to have your furnace inspected by a professional to ensure there are no underlying problems. Regular maintenance can help avoid these issues and keep your furnace running smoothly.

Waukegan Heating Services

At Kern Heating & Cooling Co., we understand the importance of a well-functioning furnace for your comfort and safety. If you're experiencing any issues with your furnace or need maintenance and repairs, don't hesitate to reach out to us. Our experienced technicians are available to assist you and ensure your furnace is in top condition. Call us today at (847) 383-0350 for all your furnace needs!

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