When your furnace is running correctly, it should give heat without generating too much sound. While it’s common to catch your furnace making noise as it starts up, other noises are showing your furnace needs immediate professional assistance.

Here are some of the most reported furnace noises and what they can be indicating. If your furnace is making a strange noise, our friendly heating pros are here to assist with the best furnace repair in Morgantown, West Virginia.

1. Furnace Makes Banging or Knocking Sounds

You may have a critical situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be several problems. These involve gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over the years, so that’s why it’s critical to set routine furnace maintenance with Mountain Air. One of the things our technicians perform during this work is clean your furnace’s burners. When this piece gets grimy, you could hear your furnace making a loud rumbling noise when ignition takes longer than normal. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can emit carbon monoxide, which is regularly vented outside. This hazardous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Mountain Air urges you to turn it off and calling us at 304-413-1287. Excessive natural gas in your furnace or a fractured heat exchanger are serious issues that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move heated air across your residence. If the ductwork wasn’t designed right or is getting dated, it can be loud when your furnace is on. This could be the problem if your furnace makes a banging noise when it shuts off. Call Mountain Air at 304-413-1287 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

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

Your furnace relies on an internal transformer to operate on the right voltage. If wires or the box needs to be tightened, you may notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves hot or cold air across your house, and a capacitor, which triggers the motor. If either of these components are fading, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be the result of something minor, like an unsecure screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and getting in touch with our heating professionals at 304-413-1287 for assistance.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to get your attention it could use some TLC. If you’ve neglected furnace maintenance the past few years, belts could be worn out or a bearing might need to be lubed. We realize that maintenance sometimes slips your mind, but our professionals can get your furnace heating quietly again fast.

5. Furnace Whistles

When you’re detecting 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 operating if a floor vent isn’t secure. If you’ve examined your vents but are still noticing whistling, Mountain Air can help. It’s essential to get loose ductwork repaired fast, as it can make comfort issues in your house and inflate your gas bills.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal noise typically means there’s trouble with your furnace’s blower. Shut down your furnace off now and contact our pros at 304-413-1287 for support.

When you’re getting an uncommon noise from your furnace, Mountain Air is ready to provide assistance. Contact us at 304-413-1287 to schedule your furnace repair appointment right away.