When your furnace is running like it should, it should deliver heat without generating too much noise. While it’s common to notice your furnace making noise as it begins running, other noises are showing your furnace requires immediate professional help.

Here are some of the most common furnace noises and what they could mean. If your furnace is making an odd noise, our friendly heating specialists are here to help with the best furnace repair in Rapid City, South Dakota.

1. Furnace Makes a Banging Sound

You may have a serious problem 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 couple of problems. These involve gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s important to set yearly furnace maintenance with Precision Mechanical. One of the things our techs complete during this appointment is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise when ignition takes more time. The subsequent gas buildup may break your furnace’s heat exchanger, where natural gas changes into warmth. Any cracks in it can emit carbon monoxide, which is normally emitted outside. This dangerous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Precision Mechanical urges you to turn it off and calling us at 605-206-3766. Significant natural gas in your furnace or a fractured heat exchanger are dangerous issues that should get prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide hot air throughout your home. If the ductwork wasn’t put in correctly or is aging, it can make a lot of noise when your furnace is on. This can be the issue if your furnace makes a banging noise when it shuts off. Contact Precision Mechanical at 605-206-3766 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound frequently means there’s an electrical issue, 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 needs to be tightened, you may detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes heated or cooled air around your residence, and a capacitor, which turns on the motor. If either of these components are going out, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be due to something little, like an unfastened screw, or something critical, like a broken piece. In either case, we recommend shutting off your furnace and contacting our heating professionals at 605-206-3766 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to tell you it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be greased. We realize that maintenance often slips your mind, but our professionals can get your furnace operating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently due to 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 examined your vents but are still noticing noise, Precision Mechanical can help. It’s critical to get loose ductwork taken care of without delay, since it can make comfort troubles in your house and increase your gas bills.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal sound often means there’s an issue with your furnace’s blower. Switch off your furnace off right away and contact us at 605-206-3766 for assistance.

When you’re getting an atypical noise from your furnace, Precision Mechanical is ready to provide assistance. Contact us at 605-206-3766 to request your furnace repair appointment now.