When your furnace is operating like it should, it should give warmth without generating too much sound. While it’s common to notice your furnace making noise as it starts up, other disruptions are indicating your furnace requires immediate professional help.

Here are some of the most frequent furnace noises and what they can mean. If your furnace is making a weird noise, our friendly heating professionals are here to help with the best furnace repair in Kutztown and Breinigsville, Pennsylvania.

1. Furnace Making a Banging Noise

You might have an urgent situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a few problems. These involve gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over time, so that’s why it’s essential to schedule annual furnace maintenance with Moyer Total Indoor Comfort. One of the jobs our professionals do during this service is clean your furnace’s burners. When this component gets dirty, you might hear your furnace making a loud rumbling noise when ignition is delayed. The following gas buildup may break your furnace’s heat exchanger, where natural gas changes into warm air. Any cracks in it can leak carbon monoxide, which is ordinarily emitted outdoors. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Moyer Total Indoor Comfort recommends turning it off and contacting us at 484-646-3363. Excessive natural gas in your furnace or a broken heat exchanger are hazardous problems that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver hot air throughout your home. If the ductwork wasn’t designed correctly or is getting dated, it can be loud when your furnace is on. This may be the case if your furnace makes a banging noise when it shuts off. Call Moyer Total Indoor Comfort at 484-646-3363 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often is telling you there’s an electrical problem, 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 could detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes heated or chilly air around your home, and a capacitor, which turns on the motor. If either of these components are going out, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be due to something minor, like a loose screw, or something critical, like a broken part. In either case, we advise shutting your furnace off and contacting our heating specialists at 484-646-3363 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to get your attention it could use some TLC. If you’ve skipped furnace maintenance recently, belts could be worn down or a bearing could need to be lubed. We realize that maintenance often slips your mind, but our pros can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You may also hear whistling while the furnace is on if a floor vent is loose. If you’ve checked your vents but are still noticing noise, Moyer Total Indoor Comfort can help. It’s important to get loose ductwork taken care of without delay, because it can create comfort issues in your home and increase 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 frequently means there’s an issue with your furnace’s blower. Shut down your furnace off immediately and call our pros at 484-646-3363 for help.

When you’re hearing an atypical noise from your furnace, Moyer Total Indoor Comfort is available to help. Contact us at 484-646-3363 to book your furnace repair appointment today.