Banging, Screeching and Rattling: What 6 Ordinary Furnace Noises Indicate

October 13, 2020

When your furnace is running like it should, it should deliver warm air without creating too much noise. While it’s normal to hear your furnace making noise as it starts up, other disruptions are showing your furnace should get immediate professional assistance.

Here are some of the most reported furnace noises and what they could be signaling. If your furnace is making a weird noise, our friendly heating specialists are here to help with the best furnace repair in Central Point, OR.

1. Furnace Making a Banging Noise

You may have an urgent situation on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it can mean there could be a few problems. These involve gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over the years, so that’s why it’s critical to schedule annual furnace maintenance with Titan Heating & Air Conditioning. One of the things our techs complete during this appointment is clean your furnace’s burners. When this piece gets grubby, you may hear your furnace making a loud rumbling noise after ignition is delayed. The ensuing gas buildup can crack your furnace’s heat exchanger, where natural gas changes into heat. Any breaks in it can emit carbon monoxide, which is ordinarily vented outside. This hazardous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Titan Heating & Air Conditioning urges you to turn it off and reaching us at 514-600-5499. Excessive natural gas in your furnace or a ruptured heat exchanger are dangerous issues that should get prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver hot air around your house. If the ductwork wasn’t installed correctly or is aging, it can be noisy when your furnace runs. This might be the case if your furnace makes a banging noise when it shuts off. Get in touch with Titan Heating & Air Conditioning at 514-600-5499 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to operate on the proper voltage. If wires or the box needs to be tightened, you may notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes warm or chilly air throughout your rooms, and a capacitor, which starts the motor. If either of these parts are going out, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be the result of something small, like an unsecure screw, or something major, like a broken part. In either case, we advise shutting your furnace off and calling our heating pros at 514-600-5499 for support.

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 get your attention it could use some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn out or a bearing might need to be lubed. We are aware that maintenance frequently slips your mind, but our professionals can get your furnace heating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You may also hear whistling while the furnace is operating if a floor vent isn’t tight. If you’ve examined your vents but are still hearing sound, Titan Heating & Air Conditioning can help. It’s essential to get loose ductwork fixed fast, as it can create comfort issues in your house and drive up your gas costs.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal racket often means there’s a problem with your furnace’s blower. Turn off your furnace off promptly and contact our professionals at 514-600-5499 for support.

When you’re getting a strange noise from your furnace, Titan Heating & Air Conditioning is ready to help. Contact us at 514-600-5499 to schedule your furnace repair appointment today.