When your furnace is running correctly, it should deliver warm air without generating too much sound. While it’s common to hear your furnace making noise as it starts up, other sounds are signaling your furnace needs immediate professional help.

Here are some of the most frequent furnace noises and what they might be indicating. If your furnace is making an atypical noise, our friendly heating pros are here to fix the problem with the best furnace repair in Moline, Illinois.

1. Furnace Makes Banging or Knocking Sounds

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

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over the years, so that’s why it’s important to book annual furnace maintenance with J.L. Brady Company LLC. One of the tasks our technicians perform during this appointment is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise when ignition takes longer than normal. The subsequent gas buildup can crack your furnace’s heat exchanger, where natural gas turns into warmth. Any breaks in it can emit carbon monoxide, which is ordinarily released outdoors. This dangerous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, J.L. Brady Company LLC advises turning it off and calling us at 309-517-7511. Excessive natural gas in your furnace or a fractured heat exchanger are critical issues that require fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide heated air throughout your home. If the ductwork wasn’t put in correctly or is getting dated, it can be noisy when your furnace is on. This could be the case if your furnace makes a banging noise when it shuts off. Call J.L. Brady Company LLC at 309-517-7511 and we’ll pinpoint 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 typically is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to work on the proper 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 warm or cooled air around your home, and a capacitor, which starts the motor. If either of these parts are failing, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be due to something small, like a loose screw, or something serious, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating pros at 309-517-7511 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to get your attention it needs some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn down or a bearing could need to be lubricated. We realize that maintenance sometimes slips your mind, but our pros can get your furnace heating quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You might also hear whistling while the furnace is operating if a floor vent isn’t secure. If you’ve looked at your vents but are still sensing whistling, J.L. Brady Company LLC can assist you. It’s essential to get loose ductwork taken care of fast, because it can make comfort problems in your residence and inflate your utility bills.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal sound often means there’s an issue with your furnace’s blower. Turn off your furnace off right away and reach us at 309-517-7511 for assistance.

When you’re getting a weird noise from your furnace, J.L. Brady Company LLC is here to provide assistance. Contact us at 309-517-7511 to request your furnace repair appointment right away.