When your furnace is working like it should, it should provide heat without generating too much disruption. While it’s common to hear your furnace making noise as it begins running, other noises are signaling your furnace needs immediate professional help.

Here are some of the most frequent furnace noises and what they could be signaling. If your furnace is making an atypical noise, our friendly heating pros are here to help with the best furnace repair in Crystal and Twin Cities, Minnesota.

1. Furnace Making a Banging Noise

You might have a critical situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be a couple of problems. These range from gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over time, so that’s why it’s important to schedule seasonal furnace maintenance with GV Heating & Air. One of the tasks our technicians complete during this work is clean your furnace’s burners. When this piece gets dirty, you could hear your furnace making a loud rumbling noise if ignition takes more time. The following gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can leak carbon monoxide, which is normally released outside. This dangerous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, GV Heating & Air urges you to turn it off and contacting us at 763-535-2000. Significant natural gas in your furnace or a broken heat exchanger are critical issues that necessitate fast service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move warm air around your home. If the ductwork wasn’t put in properly or is aging, it can be loud when your furnace is on. This might be the problem if your furnace makes a banging noise when it shuts off. Call GV Heating & Air at 763-535-2000 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically indicates an electrical situation, 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 isn’t tight enough, you may detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves heated or cold air around your residence, and a capacitor, which starts the motor. If either of these pieces are going out, they will buzz when the furnace turns on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be the result of something little, like an unsecure screw, or something major, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 763-535-2000 for support.

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 needs some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be lubed. We realize that maintenance frequently slips your mind, but our techs can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently 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 checked your vents but are still hearing noise, GV Heating & Air can assist you. It’s critical to get loose ductwork repaired without delay, as it can create comfort issues in your home and inflate your utility bills.

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 often means there’s trouble with your furnace’s blower. Turn off your furnace off right away and call our professionals at 763-535-2000 for support.

When you’re getting an uncommon noise from your furnace, GV Heating & Air is available to provide assistance. Contact us at 763-535-2000 to request your furnace repair appointment now.