When your furnace is working correctly, it should provide warm air without creating too much noise. While it’s expected to notice your furnace making noise as it begins running, other disruptions are indicating your furnace should get immediate professional assistance.

Here are some of the most common furnace noises and what they might be indicating. If your furnace is making a strange noise, our friendly heating specialists are here to help with the best furnace repair in Huntingburg, Indiana.

1. Furnace Makes Banging or Knocking Sounds

You could have a serious problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a few problems. These range from gas increasing in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over the years, so that’s why it’s critical to book annual furnace maintenance with Dearing's Service & Solutions. One of the tasks our pros complete during this appointment is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The ensuing gas buildup can crack your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can discharge carbon monoxide, which is regularly vented outside. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Dearing's Service & Solutions advises turning it off and calling us at 812-200-5844. Significant natural gas in your furnace or a cracked heat exchanger are critical problems that should get fast service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide heated air around your home. If the ductwork wasn’t installed properly or is getting dated, it can be noisy when your furnace is heating. This might be the issue if your furnace makes a banging noise when it shuts off. Contact Dearing's Service & Solutions at 812-200-5844 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace uses an internal transformer to work 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 uses a blower motor, which sends hot or chilly air around your space, and a capacitor, which turns on the motor. If either of these parts 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 may be the result of something little, like an unfastened screw, or something serious, like a broken component. In either case, we recommend shutting off your furnace and contacting our heating pros at 812-200-5844 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to get your attention it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing might need to be greased. We know that maintenance sometimes slips your mind, but our pros can get your furnace heating quietly again rapidly.

5. Furnace Whistles

When you’re detecting your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You might also notice whistling while the furnace is working if a floor vent is loose. If you’ve checked your vents but are still noticing whistling, Dearing's Service & Solutions can assist you. It’s important to get loose ductwork repaired quickly, since it can create comfort troubles in your home and inflate your heating expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you hear your furnace making a grinding noise. This metal-on-metal sound frequently means there’s an issue with your furnace’s blower. Switch off your furnace off instantly and call our pros at 812-200-5844 for help.

When you’re getting an uncommon noise from your furnace, Dearing's Service & Solutions is ready to help. Contact us at 812-200-5844 to book your furnace repair appointment now.