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It’s normal for your furnace to make some noise. For instance, a dull hum is to be expected. However, louder noises might spell trouble for your heating unit’s components. Remember to turn off your furnace if it makes any alarming sounds and leave the repair job to a professional.
To help you, our Garber Heating & Air Conditioning team here in Morton made a list of six common furnace noises, what might be causing the noises, and what to do if you hear them.
If you hear a loud banging noise, you should turn off your furnace right away. This might mean you have dirty burners that cause gas buildup in the ignition. A heating, ventilation, and air conditioning (HVAC) technician should clean your burners once a year during a maintenance inspection.
Another culprit could be your vents expanding and contracting due to temperature change. No matter the cause, you should have one of our professionals inspect the problem right away. Internal equipment knocking around could lead to a cracked heat exchanger, which is grounds for replacing your furnace as stated by the American Gas Association.
3. Rhythmic Metallic Clanging
If your ears detect a clanging or thud repeating in a rhythmic fashion, there’s probably something caught in the blower blades. If you hear this noise, power down your furnace and inspect the blades to see if a foreign object has made its way into there. If you can’t see anything, give us a call to help.
When your blower fan comes loose, it scrapes against other metal components creating a shrill noise. In this case, you should turn off your furnace immediately to prevent further damage. If you catch it early on, the repair should be pretty simple and inexpensive. Leave it for too long, and the repair could be more serious.
5. Recurring Clicking Noise
This sound might be harder to pick up on, so you should pay careful attention. It might mean you have a defective relay switch, which is the component sending electricity to the heating parts and motor.
Another possibility is your flame might be having trouble staying lit. A misaligned or dirty thermocouple can prevent the flame from staying lit. Or a bad gas valve could be the culprit. Either way, call one of our professionals as soon as possible to keep your furnace and Illinois home in good condition.
This is another sound you may not notice. It’s the sound of extra combustion occurring, which could be caused by dirty gas burners or a misplaced pilot light. No matter the cause, this scenario requires a professional’s attention.
We Are Your Furnace Experts
Is your furnace making any of these noises? If so, call our Garber Heating & Air Conditioning professionals at 309-866-3025 or request service online for a repair inspection. We’re pleased to help our Morton, IL, neighbors stay warm during cold months!