When your furnace is working like it should, it should give heat without making too much noise. While it’s common to hear your furnace making noise as it turns on, other noises are showing your furnace needs immediate professional help.

Here are some of the most frequent furnace noises and what they can mean. If your furnace is making an odd noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Libertyville, Illinois.

1. Furnace Makes a Banging Sound

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 mean there could be several problems. These involve gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy as time passes, so that’s why it’s critical to book routine furnace maintenance with TopTec. One of the things our technicians do during this appointment is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise if ignition is delayed. The resulting gas buildup might break your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can emit carbon monoxide, which is regularly emitted outside. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, TopTec urges you to turn it off and calling us at 847-362-0262. Significant natural gas in your furnace or a ruptured heat exchanger are hazardous problems that necessitate immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move warm air around your house. If the ductwork wasn’t put in correctly or is getting old, it can be loud when your furnace is heating. This might be the case if your furnace makes a banging noise when it shuts off. Call TopTec at 847-362-0262 and we’ll determine the problem.

2. Furnace Buzzes Constantly

If you notice your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often means there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to work on the right voltage. If wires or the box isn’t tight enough, you might detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or cooled air throughout your house, and a capacitor, which triggers the motor. If either of these components are fading, 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 serious, like a broken part. In either case, we urge you to shut your furnace off and calling our heating specialists at 847-362-0262 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to tell you it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing could need to be greased. We realize that maintenance often slips your mind, but our techs can get your furnace heating quietly again fast.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You might also be aware of whistling while the furnace is on if a floor vent isn’t tight. If you’ve checked your vents but are still noticing sound, TopTec can help. It’s critical to get loose ductwork fixed quickly, because it can result in comfort issues in your home and inflate your heating expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal racket often means there’s a problem with your furnace’s blower. Shut down your furnace off immediately and contact our professionals at 847-362-0262 for assistance.

When you’re noticing an atypical noise from your furnace, TopTec is here to help. Contact us at 847-362-0262 to request your furnace repair appointment today.