When your furnace is running correctly, it should give warmth without creating too much noise. While it’s normal to catch your furnace making noise as it starts up, other sounds are showing your furnace should get immediate professional support.

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

1. Furnace Making a Banging Noise

You might 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 mean there could be a couple of problems. These include gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets filthy over time, so that’s why it’s essential to schedule seasonal furnace maintenance with Farnell Heating & Air Conditioning Inc. One of the things our pros perform during this service is clean your furnace’s burners. When this component gets grubby, you may hear your furnace making a loud rumbling noise after ignition takes more time. The following gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warm air. Any cracks in it can emit carbon monoxide, which is ordinarily released outdoors. This toxic gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Farnell Heating & Air Conditioning Inc advises turning it off and contacting us at 251-471-2674. Significant natural gas in your furnace or a broken heat exchanger are critical troubles that necessitate immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air throughout your house. If the ductwork wasn’t designed correctly or is aging, it can make a lot of noise when your furnace runs. This can be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Farnell Heating & Air Conditioning Inc at 251-471-2674 and we’ll pinpoint 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 usually is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the proper voltage. If wires or the box needs to be tightened, you might notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes warm or cold air around your space, and a capacitor, which triggers the motor. If either of these components are going out, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be related to something small, like an unsecure screw, or something major, like a broken piece. In either case, we advise shutting your furnace off and calling our heating specialists at 251-471-2674 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to tell you it needs some TLC. If you’ve skipped furnace maintenance recently, belts could be worn down or a bearing may need to be lubed. We know that maintenance often slips your mind, but our professionals can get your furnace operating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You might also be aware of whistling while the furnace is working if a floor vent isn’t secure. If you’ve looked at your vents but are still hearing noise, Farnell Heating & Air Conditioning Inc can provide support. It’s essential to get loose ductwork taken care of quickly, as it can make comfort issues in your residence and drive up your energy expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal racket usually means there’s trouble with your furnace’s blower. Shut down your furnace off now and reach our professionals at 251-471-2674 for assistance.

When you’re getting a strange noise from your furnace, Farnell Heating & Air Conditioning Inc is available to support you. Contact us at 251-471-2674 to request your furnace repair appointment right away.