When your furnace is running correctly, it should provide heat without generating too much noise. While it’s common to notice your furnace making noise as it turns on, other disruptions are signaling your furnace should get immediate professional assistance.

Here are some of the most common furnace noises and what they can be signaling. If your furnace is making a strange noise, our friendly heating professionals are here to assist with the best furnace repair in Genoa, Illinois.

1. Furnace Makes Banging or Knocking Sounds

You may have an urgent issue on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a couple of problems. These include gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over time, so that’s why it’s important to book yearly furnace maintenance with Assured Appliance & Heating & Air. One of the things our professionals do during this appointment is clean your furnace’s burners. When this part gets grubby, you might hear your furnace making a loud rumbling noise after ignition is delayed. The following gas buildup can crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can leak carbon monoxide, which is ordinarily emitted outdoors. This toxic gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Assured Appliance & Heating & Air recommends turning it off and calling us at 847-306-8990. Excessive natural gas in your furnace or a broken heat exchanger are critical problems that should get immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move warm air across your residence. If the ductwork wasn’t designed right or is aging, it can be noisy when your furnace runs. This could be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Assured Appliance & Heating & Air at 847-306-8990 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently is telling you there’s an electrical issue, 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 is loose, you might hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes hot or cold air throughout your rooms, and a capacitor, which starts the motor. If either of these parts 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 small, like an unsecure screw, or something serious, like a broken component. In either case, we urge you to shut your furnace off and contacting our heating pros at 847-306-8990 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to tell you it requires some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn out or a bearing might need to be lubricated. We are aware that maintenance often slips your mind, but our pros can get your furnace heating quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You might also be aware of whistling while the furnace is running if a floor vent isn’t secure. If you’ve checked your vents but are still noticing noise, Assured Appliance & Heating & Air can assist you. It’s essential to get loose ductwork repaired quickly, because it can create comfort issues in your house and increase your gas expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal racket typically means there’s an issue with your furnace’s blower. Shut down your furnace off immediately and call our pros at 847-306-8990 for help.

When you’re hearing an uncommon noise from your furnace, Assured Appliance & Heating & Air is ready to support you. Contact us at 847-306-8990 to schedule your furnace repair appointment right away.