When your furnace is working correctly, it should provide heat without creating too much sound. While it’s common to catch your furnace making noise as it starts up, other disruptions are indicating your furnace should get immediate professional assistance.

Here are some of the most reported furnace noises and what they might be indicating. If your furnace is making a weird noise, our friendly heating pros are here to help with the best furnace repair in Rapid City, South Dakota.

1. Furnace Makes Banging or Knocking Sounds

You may have an urgent problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be several problems. These include gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty as time passes, so that’s why it’s essential to set seasonal furnace maintenance with Precision Mechanical. One of the jobs our technicians do during this work is clean your furnace’s burners. When this component gets dirty, you might hear your furnace making a loud rumbling noise when ignition takes more time. The ensuing gas buildup may crack your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can leak carbon monoxide, which is regularly released outside. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Precision Mechanical advises turning it off and reaching us at 605-206-3766. Significant natural gas in your furnace or a cracked heat exchanger are serious problems that should get prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide heated air across your house. If the ductwork wasn’t put in right or is aging, it can be noisy when your furnace runs. This might be the problem if your furnace makes a banging noise when it shuts off. Contact Precision Mechanical at 605-206-3766 and we’ll determine 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 depends on an internal transformer to operate on the right voltage. If wires or the box is loose, you may detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends heated or cooled air across your space, and a capacitor, which triggers the motor. If either of these pieces are going out, they will buzz when the furnace switches on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be the result of something small, like an unsecure screw, or something serious, like a broken component. In either case, we urge you to shut your furnace off and contacting our heating pros at 605-206-3766 for help.

4. Furnace Making a Squealing Noise

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

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You could also be aware of whistling while the furnace is working if a floor vent isn’t tight. If you’ve checked your vents but are still hearing sound, Precision Mechanical can help. It’s essential to get loose ductwork fixed fast, because it can make comfort issues in your residence and drive up your gas expenses.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal racket typically means there’s an issue with your furnace’s blower. Turn off your furnace off promptly and contact us at 605-206-3766 for help.

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