When your furnace is running like it should, it should deliver warm air without creating too much noise. While it’s expected to hear your furnace making noise as it turns on, other noises are indicating your furnace should get immediate professional support.

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

1. Furnace Making a Banging Noise

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 signal there could be a couple of problems. These range from gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over time, so that’s why it’s essential to book yearly furnace maintenance with Freed Heating & Air Conditioning. One of the things our professionals do during this work is clean your furnace’s burners. When this piece gets dirty, you might hear your furnace making a loud rumbling noise when ignition is delayed. The resulting gas buildup may break your furnace’s heat exchanger, where natural gas turns into heat. Any breaks in it can discharge carbon monoxide, which is regularly released away from your home. This toxic gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Freed Heating & Air Conditioning advises turning it off and reaching us at 309-323-9584. Significant natural gas in your furnace or a broken heat exchanger are serious troubles that should get fast service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air throughout your house. If the ductwork wasn’t put in right or is aging, it can be noisy when your furnace is heating. This could be the issue if your furnace makes a banging noise when it shuts off. Call Freed Heating & Air Conditioning at 309-323-9584 and we’ll pinpoint the problem.

2. Furnace Makes a Buzzing Sound

If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound often means there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to operate on the proper voltage. If wires or the box isn’t tight enough, you may notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends hot or chilly air throughout your home, and a capacitor, which turns on the motor. If either of these components are fading, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be due to something little, like a loose screw, or something critical, like a broken component. In either case, we urge you to shut your furnace off and calling our heating specialists at 309-323-9584 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to tell you it needs some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be lubed. We realize that maintenance sometimes slips your mind, but our pros 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 due to an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent is loose. If you’ve looked at your vents but are still noticing noise, Freed Heating & Air Conditioning can help. It’s important to get loose ductwork taken care of fast, as it can result in comfort issues in your home and inflate your utility bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal noise frequently means there’s a problem with your furnace’s blower. Switch off your furnace off promptly and contact our professionals at 309-323-9584 for help.

When you’re hearing an uncommon noise from your furnace, Freed Heating & Air Conditioning is here to support you. Contact us at 309-323-9584 to schedule your furnace repair appointment now.