When your furnace is working properly, it should deliver warm air without making too much noise. While it’s normal to catch your furnace making noise as it starts up, other noises are showing your furnace requires immediate professional help.

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

1. Furnace Making a Banging Noise

You may have a serious problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be a few problems. These range from gas increasing 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 essential to book yearly furnace maintenance with Pure Comfort Heating and Air Conditioning. One of the things our technicians do during this service is clean your furnace’s burners. When this part gets grimy, you may hear your furnace making a loud rumbling noise when ignition is delayed. The following gas buildup can break your furnace’s heat exchanger, where natural gas changes into heat. Any cracks in it can emit carbon monoxide, which is ordinarily released away from your home. This hazardous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Pure Comfort Heating and Air Conditioning urges you to turn it off and reaching us at 630-313-2509. Excessive natural gas in your furnace or a broken heat exchanger are dangerous problems that require prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver warm air throughout your home. If the ductwork wasn’t installed correctly or is getting old, it can make a lot of noise when your furnace is on. This could be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Pure Comfort Heating and Air Conditioning at 630-313-2509 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically is telling you there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to run on the correct voltage. If wires or the box isn’t tight enough, you may detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes heated or cold air around your space, and a capacitor, which turns on the motor. If either of these components are failing, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be due to something small, like an unsecure screw, or something major, like a broken component. In either case, we urge you to shut your furnace off and calling our heating professionals at 630-313-2509 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to alert you it needs some TLC. If you’ve neglected furnace maintenance the past few years, belts could be worn down or a bearing may need to be lubricated. We realize that maintenance frequently slips your mind, but our professionals can get your furnace running quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You might also hear whistling while the furnace is running if a floor vent isn’t tight. If you’ve checked your vents but are still sensing sound, Pure Comfort Heating and Air Conditioning can assist you. It’s critical to get loose ductwork taken care of quickly, as it can make comfort issues in your residence and drive up your gas expenses.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound usually means there’s trouble with your furnace’s blower. Switch off your furnace off instantly and contact our pros at 630-313-2509 for assistance.

When you’re getting a weird noise from your furnace, Pure Comfort Heating and Air Conditioning is ready to provide assistance. Contact us at 630-313-2509 to request your furnace repair appointment right away.