When your furnace is running like it should, it should give heat without making too much disruption. While it’s normal to notice your furnace making noise as it turns on, other disruptions are showing your furnace should get immediate professional assistance.

Here are some of the most reported furnace noises and what they might be indicating. If your furnace is making a strange noise, our friendly heating pros are here to assist with the best furnace repair in Elk River, Minnesota.

1. Furnace Making a Banging Noise

You might have an urgent problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be a few problems. These include gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over the years, so that’s why it’s critical to book yearly furnace maintenance with Home Comfort Heating & Air. One of the tasks our professionals do during this service is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise after ignition is delayed. The subsequent gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warmth. Any fractures in it can leak carbon monoxide, which is normally emitted away from your home. This hazardous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Home Comfort Heating & Air recommends turning it off and contacting us at 763-276-0617. Excessive natural gas in your furnace or a ruptured heat exchanger are serious troubles that necessitate fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air throughout your residence. If the ductwork wasn’t designed correctly or is getting dated, it can be noisy when your furnace is heating. This may be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Home Comfort Heating & Air at 763-276-0617 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound often indicates an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to operate on the correct voltage. If wires or the box needs to be tightened, you might hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends hot or chilly air throughout your home, and a capacitor, which turns on the motor. If either of these pieces are fading, 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 an unsecure screw, or something critical, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating professionals at 763-276-0617 for support.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to get your attention it requires some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn out or a bearing may need to be greased. We are aware that maintenance sometimes slips your mind, but our pros can get your furnace operating quietly again quickly.

5. Furnace Whistles

When you’re detecting your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You may also hear whistling while the furnace is on if a floor vent is loose. If you’ve examined your vents but are still sensing whistling, Home Comfort Heating & Air can provide support. It’s critical to get loose ductwork repaired fast, since it can create comfort problems in your house and increase your heating expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you notice 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 instantly and reach our pros at 763-276-0617 for help.

When you’re hearing a strange noise from your furnace, Home Comfort Heating & Air is ready to support you. Contact us at 763-276-0617 to book your furnace repair appointment right away.