When your furnace is running correctly, it should provide heat without making too much sound. While it’s normal to notice your furnace making noise as it starts up, other disruptions are showing your furnace needs immediate professional assistance.

Here are some of the most common furnace noises and what they can be signaling. If your furnace is making an odd noise, our friendly heating specialists are here to help with the best furnace repair in Cedar Rapids, Iowa.

1. Furnace Making a Banging Noise

You might have a serious issue 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 a few problems. These range from gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over the years, so that’s why it’s essential to set annual furnace maintenance with Ilten's. One of the things our techs perform during this work is clean your furnace’s burners. When this piece gets grubby, you may hear your furnace making a loud rumbling noise after ignition takes more time. The following gas buildup may break your furnace’s heat exchanger, where natural gas turns into heat. Any breaks in it can emit carbon monoxide, which is regularly vented outside. This toxic gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Ilten's advises turning it off and calling us at 319-208-2351. Significant natural gas in your furnace or a ruptured heat exchanger are critical troubles that necessitate immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move heated air across your house. If the ductwork wasn’t installed right or is getting dated, it can be loud when your furnace runs. This could be the issue 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 Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound usually means there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to work on the proper voltage. If wires or the box isn’t tight enough, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends hot or cooled air across your residence, and a capacitor, which starts the motor. If either of these pieces are failing, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be the result of something little, like an unsecure screw, or something major, like a broken component. In either case, we urge you to shut your furnace off and calling our heating professionals at 319-208-2351 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to tell you it needs some TLC. If you’ve neglected furnace maintenance recently, belts could be worn down or a bearing could need to be lubricated. We realize that maintenance often slips your mind, but our technicians can get your furnace operating quietly again rapidly.

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 running if a floor vent isn’t secure. If you’ve looked at your vents but are still sensing sound, Ilten's can help. It’s critical to get loose ductwork fixed quickly, as it can make comfort issues in your home and drive up your utility expenses.

6. Furnace Making a Grinding Noise

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal noise frequently means there’s a problem with your furnace’s blower. Shut down your furnace off instantly and call us at 319-208-2351 for support.

When you’re getting an atypical noise from your furnace, Ilten's is here to help. Contact us at 319-208-2351 to request your furnace repair appointment now.