When your furnace is running like it should, it should provide warmth without creating too much noise. While it’s expected to notice your furnace making noise as it starts up, other noises are showing your furnace needs immediate professional support.

Here are some of the most frequent furnace noises and what they might be signaling. If your furnace is making a weird noise, our friendly heating professionals are here to help with the best furnace repair in Libertyville, Illinois.

1. Furnace Making a Banging Noise

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

Banging Sounds Coming from Your Furnace

Your heating system gets filthy over the years, so that’s why it’s essential to book annual furnace maintenance with TopTec. One of the things our professionals do during this appointment is clean your furnace’s burners. When this piece gets grimy, you might hear your furnace making a loud rumbling noise when ignition takes more time. The subsequent gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can discharge carbon monoxide, which is normally vented away from your home. This dangerous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, TopTec recommends turning it off and reaching us at 847-362-0262. Excessive natural gas in your furnace or a fractured heat exchanger are serious problems that necessitate fast service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide warm air across your home. If the ductwork wasn’t designed correctly or is aging, it can be noisy when your furnace is heating. This could 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 observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently indicates an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to operate on the proper voltage. If wires or the box is loose, you could hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends warm or chilly air across your residence, and a capacitor, which triggers the motor. If either of these components are going out, they will buzz when the furnace switches on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be related to something minor, like an unfastened screw, or something major, like a broken part. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 847-362-0262 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to alert you it requires some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be greased. We realize that maintenance often slips your mind, but our pros can get your furnace operating quietly again rapidly.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You might also hear whistling while the furnace is working if a floor vent isn’t secure. If you’ve checked your vents but are still hearing noise, TopTec can help. It’s important to get loose ductwork repaired fast, as it can make comfort problems in your house and drive up your heating costs.

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 now and call us at 847-362-0262 for assistance.

When you’re hearing an atypical noise from your furnace, TopTec is available to support you. Contact us at 847-362-0262 to book your furnace repair appointment today.