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

When your furnace is operating properly, it should deliver heat without creating too much disruption. While it’s expected to notice your furnace making noise as it turns on, other disruptions are indicating your furnace needs immediate professional support.

Here are some of the most frequent furnace noises and what they could be signaling. If your furnace is making a strange noise, our friendly heating pros are here to help with the best furnace repair in Huntsville.

1. Furnace Making a Banging Noise

You might have an urgent problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be several problems. These include gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over the years, so that’s why it’s important to schedule seasonal furnace maintenance with All Weather Heating & Air Conditioning Inc. One of the tasks our pros complete during this service is clean your furnace’s burners. When this piece gets dirty, you may hear your furnace making a loud rumbling noise after ignition is delayed. The following gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into heat. Any breaks in it can emit carbon monoxide, which is normally released outdoors. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, All Weather Heating & Air Conditioning Inc advises turning it off and calling us at 256-801-4701. Excessive natural gas in your furnace or a fractured heat exchanger are dangerous issues that require immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver heated air throughout your residence. If the ductwork wasn’t installed properly or is getting dated, it can make a lot of noise when your furnace runs. This could be the case if your furnace makes a banging noise when it shuts off. Get in touch with All Weather Heating & Air Conditioning Inc at 256-801-4701 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound frequently is telling you there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to operate on the right voltage. If wires or the box needs to be tightened, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends heated or cooled air across your house, and a capacitor, which starts 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 may be related to something small, like a loose screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and contacting our heating pros at 256-801-4701 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to alert you it needs some TLC. If you’ve forgotten furnace maintenance recently, belts could be dilapidated or a bearing could need to be greased. We know that maintenance sometimes slips your mind, but our professionals can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You could also hear whistling while the furnace is on if a floor vent isn’t secure. If you’ve examined your vents but are still hearing whistling, All Weather Heating & Air Conditioning Inc can provide support. It’s essential to get loose ductwork fixed without delay, because it can create comfort problems in your residence and increase your gas bills.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal racket frequently means there’s a problem with your furnace’s blower. Switch off your furnace off promptly and contact our professionals at 256-801-4701 for help.

When you’re getting an uncommon noise from your furnace, All Weather Heating & Air Conditioning Inc is available to provide assistance. Contact us at 256-801-4701 to book your furnace repair appointment today.

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