When your furnace is operating properly, it should deliver heat without making too much disruption. While it’s normal to hear your furnace making noise as it starts up, other noises are signaling your furnace should get immediate professional help.

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

1. Furnace Makes a Banging Sound

You may have an urgent issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can mean there could be several problems. These range from gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy as time passes, so that’s why it’s essential to book routine furnace maintenance with Ilten's. One of the jobs our pros perform during this work is clean your furnace’s burners. When this piece gets grimy, you might hear your furnace making a loud rumbling noise after ignition takes more time. The subsequent gas buildup might crack your furnace’s heat exchanger, where natural gas changes into warm air. Any breaks in it can discharge carbon monoxide, which is normally emitted away from your home. This toxic gas can be lethal in large concentrations.

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

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air throughout your house. If the ductwork wasn’t installed right or is getting dated, it can be loud when your furnace runs. This can be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Ilten's at 319-208-2351 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound usually means there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to operate on the proper voltage. If wires or the box needs to be tightened, you might notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes hot or cooled air around your home, and a capacitor, which starts the motor. If either of these parts are failing, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be the result of something little, like a loose screw, or something major, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating specialists at 319-208-2351 for support.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s attempting to alert you it could use some TLC. If you’ve skipped furnace maintenance recently, belts could be worn out or a bearing may need to be lubed. We realize that maintenance frequently slips your mind, but our professionals can get your furnace running quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s likely because 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 secure. If you’ve examined your vents but are still sensing whistling, Ilten's can help. It’s important to get loose ductwork repaired without delay, since it can make comfort troubles in your residence and inflate your heating costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal sound typically means there’s an issue with your furnace’s blower. Turn off your furnace off instantly and contact our pros at 319-208-2351 for help.

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