When your furnace is operating like it should, it should give heat without creating too much disruption. While it’s common to catch your furnace making noise as it starts up, other noises are signaling your furnace should get immediate professional help.

Here are some of the most common furnace noises and what they might mean. If your furnace is making an odd noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Lawrence, Kansas.

1. Furnace Making a Banging Noise

You may have a serious issue on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might signal there could be a few problems. These include gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over time, so that’s why it’s critical to schedule seasonal furnace maintenance with Scott Temperature. One of the jobs our technicians complete during this appointment is clean your furnace’s burners. When this component gets grubby, you may hear your furnace making a loud rumbling noise if ignition takes more time. The resulting gas buildup might fracture your furnace’s heat exchanger, where natural gas changes into heat. Any breaks in it can emit carbon monoxide, which is normally emitted outdoors. This dangerous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Scott Temperature recommends turning it off and contacting us at 785-269-0465. Excessive natural gas in your furnace or a cracked heat exchanger are dangerous troubles that should get immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver hot air around your home. If the ductwork wasn’t designed right or is getting dated, it can make a lot of noise when your furnace runs. This could be the issue if your furnace makes a banging noise when it shuts off. Call Scott Temperature at 785-269-0465 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to work on the right 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 uses a blower motor, which moves hot or cooled air around your house, and a capacitor, which triggers the motor. If either of these parts 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 the result of something minor, like a loose screw, or something critical, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 785-269-0465 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to alert you it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn down or a bearing might need to be greased. We are aware that maintenance often slips your mind, but our techs can get your furnace operating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent isn’t secure. If you’ve checked your vents but are still hearing whistling, Scott Temperature can help. It’s critical to get loose ductwork fixed quickly, since it can create comfort troubles in your residence and inflate your utility 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 noise often means there’s an issue with your furnace’s blower. Shut down your furnace off promptly and contact our pros at 785-269-0465 for support.

When you’re getting an atypical noise from your furnace, Scott Temperature is here to help. Contact us at 785-269-0465 to request your furnace repair appointment today.