When your furnace is running correctly, it should deliver warmth without creating too much disruption. While it’s normal to notice your furnace making noise as it starts up, other sounds are showing your furnace needs immediate professional help.

Here are some of the most reported furnace noises and what they can be signaling. If your furnace is making a weird noise, our friendly heating pros are here to assist with the best furnace repair in Cedar Rapids, Iowa.

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 might indicate there could be several problems. These include gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over the years, so that’s why it’s essential to schedule annual furnace maintenance with Ilten's. One of the jobs our professionals perform during this service is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The following gas buildup can fracture your furnace’s heat exchanger, where natural gas transforms into warmth. Any fractures in it can discharge carbon monoxide, which is regularly emitted outdoors. This hazardous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Ilten's urges you to turn it off and reaching us at 319-208-2351. Significant natural gas in your furnace or a cracked heat exchanger are hazardous troubles that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver hot air throughout your home. If the ductwork wasn’t put in correctly or is getting dated, it can make a lot of noise when your furnace is on. This may be the problem if your furnace makes a banging noise when it shuts off. Call Ilten's at 319-208-2351 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you observe your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound frequently indicates an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to work on the proper voltage. If wires or the box is loose, you could notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves heated or chilly air throughout your home, and a capacitor, which turns on the motor. If either of these pieces are failing, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be related to something little, like an unsecure screw, or something critical, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 319-208-2351 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to get your attention it requires some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn out or a bearing could need to be lubed. We are aware that maintenance frequently slips your mind, but our technicians can get your furnace operating quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You might also be aware of whistling while the furnace is operating if a floor vent isn’t secure. If you’ve examined your vents but are still hearing whistling, Ilten's can help. It’s critical to get loose ductwork fixed fast, since it can create comfort problems in your house and drive up your energy 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 noise typically means there’s a problem with your furnace’s blower. Turn off your furnace off promptly and call us at 319-208-2351 for support.

When you’re getting a strange noise from your furnace, Ilten's is ready to help. Contact us at 319-208-2351 to request your furnace repair appointment today.