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Banging, Screeching and Rattling: What 6 Common Furnace Noises Mean

When your furnace is working like it should, it should give heat without creating too much disruption. While it’s expected to hear your furnace making noise as it starts up, other disruptions are showing your furnace requires immediate professional help.

Here are some of the most common furnace noises and what they can be indicating. If your furnace is making an atypical noise, our friendly heating specialists are here to help with the best furnace repair in Hudsonville.

1. Furnace Making a Banging Noise

You could have a critical problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be several problems. These involve gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over time, so that’s why it’s important to schedule seasonal furnace maintenance with West Michigan Heating & Air Conditioning Services. One of the jobs our techs do during this appointment is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise when ignition is delayed. The ensuing gas buildup might crack your furnace’s heat exchanger, where natural gas changes into warmth. Any cracks in it can leak carbon monoxide, which is normally emitted outside. This toxic gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, West Michigan Heating & Air Conditioning Services urges you to turn it off and reaching us at (616) 669-3961. Significant natural gas in your furnace or a ruptured heat exchanger are hazardous issues that should get fast service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide hot air across your house. If the ductwork wasn’t installed right or is aging, it can be noisy when your furnace is on. This can be the case if your furnace makes a banging noise when it shuts off. Get in touch with West Michigan Heating & Air Conditioning Services at (616) 669-3961 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically indicates an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to operate on the correct voltage. If wires or the box needs to be tightened, you might hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves heated or cold air across your space, and a capacitor, which triggers the motor. If either of these components are fading, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it might be related to something little, like a loose screw, or something serious, like a broken part. In either case, we urge you to shut your furnace off and contacting our heating pros at (616) 669-3961 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to tell you it needs some TLC. If you’ve forgotten furnace maintenance recently, belts could be dilapidated or a bearing may need to be greased. We are aware that maintenance frequently slips your mind, but our technicians can get your furnace heating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You may also be aware of whistling while the furnace is on if a floor vent isn’t secure. If you’ve looked at your vents but are still sensing sound, West Michigan Heating & Air Conditioning Services can assist you. It’s essential to get loose ductwork fixed quickly, since it can result in comfort issues in your residence and inflate your heating bills.

6. Furnace Making a Grinding Noise

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal racket often means there’s a problem with your furnace’s blower. Shut down your furnace off immediately and contact our pros at (616) 669-3961 for help.

When you’re getting a weird noise from your furnace, West Michigan Heating & Air Conditioning Services is available to help. Contact us at (616) 669-3961 to book your furnace repair appointment now.

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