When your furnace is operating properly, it should deliver warm air without generating too much sound. While it’s common to catch your furnace making noise as it starts up, other disruptions are signaling your furnace needs immediate professional assistance.

Here are some of the most common furnace noises and what they might be signaling. If your furnace is making a weird noise, our friendly heating professionals are here to fix the problem with the best furnace repair in South Beloit and Belvidere, Illinois.

1. Furnace Makes a Banging Sound

You could have a serious problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can mean 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 gets filthy over the years, so that’s why it’s essential to book annual furnace maintenance with Fleming Heating & Air Conditioning Inc. One of the things our techs complete during this work is clean your furnace’s burners. When this part gets dirty, you could hear your furnace making a loud rumbling noise when ignition is delayed. The resulting gas buildup might fracture your furnace’s heat exchanger, where natural gas turns into warmth. Any cracks in it can emit carbon monoxide, which is ordinarily vented outdoors. This hazardous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Fleming Heating & Air Conditioning Inc recommends turning it off and reaching us at 877-389-2465. Significant natural gas in your furnace or a cracked heat exchanger are serious issues that should get fast service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move heated air throughout your residence. If the ductwork wasn’t designed correctly or is getting old, it can be noisy when your furnace is heating. This can be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Fleming Heating & Air Conditioning Inc at 877-389-2465 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t delay calling 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 could detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or chilly air around your home, and a capacitor, which turns on the motor. If either of these pieces are going out, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be the result of something minor, like an unsecure screw, or something critical, like a broken piece. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 877-389-2465 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to alert you it needs 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 lubed. We know that maintenance frequently slips your mind, but our professionals 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 likely the result of an air leak in your ductwork. You may also notice whistling while the furnace is on if a floor vent is loose. If you’ve checked your vents but are still hearing whistling, Fleming Heating & Air Conditioning Inc can assist you. It’s important to get loose ductwork taken care of fast, because it can result in comfort troubles in your residence and increase your heating expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal racket often means there’s a problem with your furnace’s blower. Switch off your furnace off right away and call us at 877-389-2465 for assistance.

When you’re noticing a strange noise from your furnace, Fleming Heating & Air Conditioning Inc is ready to help. Contact us at 877-389-2465 to schedule your furnace repair appointment right away.