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

October 13, 2020

When your furnace is working properly, it should give heat without generating too much noise. While it’s common to notice your furnace making noise as it starts up, other disruptions are showing your furnace requires immediate professional assistance.

Here are some of the most common furnace noises and what they might be indicating. If your furnace is making a weird noise, our friendly heating pros are here to help with the best furnace repair in Booneville, MS.

1. Furnace Making a Banging Noise

You could have a serious 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 a couple of problems. These include gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over the years, so that’s why it’s critical to set yearly furnace maintenance with Booneville Heating & Cooling LLC. One of the jobs our technicians perform during this service is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise if ignition is delayed. The ensuing gas buildup might break your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can discharge carbon monoxide, which is regularly emitted outside. This hazardous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Booneville Heating & Cooling LLC urges you to turn it off and contacting us at 662-269-8716. Too much natural gas in your furnace or a fractured heat exchanger are critical issues that should get fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver heated air across your residence. If the ductwork wasn’t designed correctly or is getting dated, it can be loud when your furnace runs. This can be the issue if your furnace makes a banging noise when it shuts off. Call Booneville Heating & Cooling LLC at 662-269-8716 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t wait 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 relies on an internal transformer to work on the correct voltage. If wires or the box is loose, you could detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends heated or chilly air throughout your home, and a capacitor, which triggers the motor. If either of these pieces are failing, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be related to something minor, like an unfastened screw, or something major, like a broken part. In either case, we advise shutting your furnace off and getting in touch with our heating pros at 662-269-8716 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to alert you it could use some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn down or a bearing might need to be greased. We are aware 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 noticing 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 running if a floor vent isn’t tight. If you’ve looked at your vents but are still sensing whistling, Booneville Heating & Cooling LLC can provide support. It’s critical to get loose ductwork taken care of fast, since it can result in comfort troubles in your home and drive up your gas bills.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal noise often means there’s a problem with your furnace’s blower. Switch off your furnace off promptly and reach our professionals at 662-269-8716 for assistance.

When you’re hearing an uncommon noise from your furnace, Booneville Heating & Cooling LLC is ready to help. Contact us at 662-269-8716 to schedule your furnace repair appointment today.