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

October 13, 2020

When your furnace is working properly, it should give warmth without creating too much disruption. While it’s normal to notice your furnace making noise as it begins running, other sounds are showing your furnace requires immediate professional help.

Here are some of the most reported furnace noises and what they might be indicating. If your furnace is making an odd noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Chatsworth.

1. Furnace Making a Banging Noise

You could have a serious issue on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may mean 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 turns grimy over the years, so that’s why it’s essential to schedule yearly furnace maintenance with True Temp Heating & Air Inc. One of the tasks our technicians perform during this service is clean your furnace’s burners. When this part gets grimy, you may hear your furnace making a loud rumbling noise after ignition is delayed. The resulting gas buildup can fracture your furnace’s heat exchanger, where natural gas turns into heat. Any breaks in it can emit carbon monoxide, which is normally emitted away from your home. This hazardous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, True Temp Heating & Air Inc urges you to turn it off and reaching us at 706-695-7492. Excessive natural gas in your furnace or a fractured heat exchanger are serious troubles that require fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air around your residence. If the ductwork wasn’t designed correctly or is getting old, it can be loud when your furnace runs. This might be the issue if your furnace makes a banging noise when it shuts off. Get in touch with True Temp Heating & Air Inc at 706-695-7492 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to run on the right voltage. If wires or the box isn’t tight enough, you may notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or cold air throughout your rooms, and a capacitor, which turns on 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 may be related to something minor, like a loose screw, or something major, like a broken component. In either case, we advise shutting your furnace off and contacting our heating pros at 706-695-7492 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to get your attention 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 often slips your mind, but our professionals 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 likely due to an air leak in your ductwork. You may also be aware of whistling while the furnace is operating if a floor vent is loose. If you’ve examined your vents but are still sensing sound, True Temp Heating & Air Inc can assist you. It’s important to get loose ductwork repaired quickly, since it can result in comfort problems in your house and drive up your heating 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 an issue with your furnace’s blower. Switch off your furnace off right away and contact us at 706-695-7492 for support.

When you’re hearing a strange noise from your furnace, True Temp Heating & Air Inc is here to provide assistance. Contact us at 706-695-7492 to book your furnace repair appointment now.