When your furnace is working correctly, it should provide warmth without generating too much sound. While it’s expected to notice your furnace making noise as it begins running, other sounds are indicating your furnace requires immediate professional help.

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

1. Furnace Makes Banging or Knocking Sounds

You may have a critical situation on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be a couple of problems. These involve gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy as time passes, so that’s why it’s critical to set annual furnace maintenance with Alpine Summit Heating & Cooling. One of the jobs our professionals do during this service is clean your furnace’s burners. When this piece gets dirty, you may hear your furnace making a loud rumbling noise when ignition takes longer than normal. The ensuing gas buildup might break your furnace’s heat exchanger, where natural gas turns into warmth. Any fractures in it can discharge carbon monoxide, which is ordinarily emitted outdoors. This hazardous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Alpine Summit Heating & Cooling advises turning it off and calling us at 208-561-1226. Significant natural gas in your furnace or a broken heat exchanger are hazardous troubles that require fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air throughout your house. If the ductwork wasn’t installed properly or is aging, it can be noisy when your furnace is heating. This may be the problem if your furnace makes a banging noise when it shuts off. Call Alpine Summit Heating & Cooling at 208-561-1226 and we’ll determine the problem.

2. Furnace Buzzes Constantly

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

Your furnace uses an internal transformer to work on the proper voltage. If wires or the box is loose, you might hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves hot or chilly air throughout your space, and a capacitor, which triggers the motor. If either of these components are fading, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be related to something little, like an unsecure 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 208-561-1226 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to tell you it could use some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing might need to be lubed. We know that maintenance often slips your mind, but our technicians can get your furnace operating 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 because of an air leak in your ductwork. You could also notice whistling while the furnace is running if a floor vent is loose. If you’ve looked at your vents but are still noticing sound, Alpine Summit Heating & Cooling can provide support. It’s critical to get loose ductwork taken care of quickly, because it can result in comfort troubles in your residence and inflate your utility expenses.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise typically means there’s an issue with your furnace’s blower. Shut down your furnace off promptly and call our pros at 208-561-1226 for help.

When you’re hearing a strange noise from your furnace, Alpine Summit Heating & Cooling is available to help. Contact us at 208-561-1226 to book your furnace repair appointment now.