When your furnace is running properly, it should provide warmth without creating too much sound. While it’s normal to notice your furnace making noise as it begins running, other sounds are indicating your furnace should get immediate professional assistance.

Here are some of the most reported furnace noises and what they might mean. If your furnace is making an atypical noise, our friendly heating specialists are here to assist with the best furnace repair in Dundas and Northfield, Minnesota.

1. Furnace Making a Banging Noise

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

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy as time passes, so that’s why it’s essential to set annual furnace maintenance with Better Air. One of the jobs our techs perform during this work is clean your furnace’s burners. When this piece gets grubby, you may hear your furnace making a loud rumbling noise after ignition takes longer than normal. The resulting gas buildup may crack your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can emit carbon monoxide, which is normally vented outdoors. This hazardous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Better Air recommends turning it off and calling us at 507-663-1208. Significant natural gas in your furnace or a fractured heat exchanger are hazardous troubles that necessitate immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move heated air throughout your house. If the ductwork wasn’t installed correctly or is aging, it can be noisy when your furnace is heating. This might be the issue if your furnace makes a banging noise when it shuts off. Contact Better Air at 507-663-1208 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 issue, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the right voltage. If wires or the box needs to be tightened, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends hot or cooled air across your rooms, and a capacitor, which turns on the motor. If either of these parts 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 can be due to something little, like a loose screw, or something critical, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 507-663-1208 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to tell you it needs some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn out or a bearing might need to be greased. We are aware that maintenance frequently slips your mind, but our technicians can get your furnace running quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You could also hear whistling while the furnace is operating if a floor vent isn’t secure. If you’ve looked at your vents but are still noticing sound, Better Air can help. It’s essential to get loose ductwork fixed without delay, since it can make comfort troubles in your home and increase your heating expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal noise usually means there’s an issue with your furnace’s blower. Switch off your furnace off promptly and reach our professionals at 507-663-1208 for assistance.

When you’re hearing a weird noise from your furnace, Better Air is ready to support you. Contact us at 507-663-1208 to book your furnace repair appointment now.