When your furnace is operating properly, it should provide warm air without making too much sound. While it’s expected to catch your furnace making noise as it starts up, other noises are signaling your furnace should get immediate professional support.

Here are some of the most reported furnace noises and what they can be indicating. If your furnace is making a weird noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Crystal and Twin Cities, Minnesota.

1. Furnace Makes Banging or Knocking Sounds

You might have a critical issue on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be several problems. These range from gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over the years, so that’s why it’s critical to schedule seasonal furnace maintenance with GV Heating & Air. One of the jobs our professionals do during this work is clean your furnace’s burners. When this part gets grimy, you might hear your furnace making a loud rumbling noise when ignition takes longer than normal. The ensuing gas buildup may crack your furnace’s heat exchanger, where natural gas transforms into warmth. Any cracks in it can leak carbon monoxide, which is ordinarily released outdoors. This toxic 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 calling us at 763-535-2000. Excessive natural gas in your furnace or a broken heat exchanger are serious issues that require fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air around your house. If the ductwork wasn’t designed right or is getting old, it can make a lot of noise when your furnace is on. This might be the issue if your furnace makes a banging noise when it shuts off. Get in touch with GV Heating & Air at 763-535-2000 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

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

Your furnace uses an internal transformer to operate on the right voltage. If wires or the box needs to be tightened, you may hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves warm or chilly air throughout your house, and a capacitor, which triggers the motor. If either of these pieces are fading, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be due to something minor, like a loose screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and calling our heating specialists at 763-535-2000 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to alert you it could use 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 know that maintenance frequently slips your mind, but our techs can get your furnace heating quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You might also be aware of whistling while the furnace is operating if a floor vent isn’t secure. If you’ve checked your vents but are still hearing noise, GV Heating & Air can help. It’s essential to get loose ductwork repaired without delay, because it can result in comfort issues in your home and drive up your utility expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal sound frequently means there’s trouble with your furnace’s blower. Turn off your furnace off instantly and call our pros at 763-535-2000 for support.

When you’re noticing an atypical noise from your furnace, GV Heating & Air is ready to support you. Contact us at 763-535-2000 to schedule your furnace repair appointment now.