When your furnace is operating like it should, it should give warm air without making too much sound. While it’s normal to catch your furnace making noise as it begins running, other sounds are indicating your furnace should get immediate professional support.

Here are some of the most common furnace noises and what they can mean. If your furnace is making an atypical noise, our friendly heating pros are here to help with the best furnace repair in Des Moines, Iowa.

1. Furnace Making a Banging Noise

You might have a serious issue on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it may indicate there could be several problems. These include gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s essential to book yearly furnace maintenance with Heartland Heating & Cooling. One of the jobs our technicians do during this service is clean your furnace’s burners. When this piece gets grubby, you could hear your furnace making a loud rumbling noise after ignition is delayed. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas turns into warm air. Any cracks in it can discharge carbon monoxide, which is ordinarily vented away from your home. This toxic gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Heartland Heating & Cooling advises turning it off and calling us at 515-344-3579. Excessive natural gas in your furnace or a fractured heat exchanger are dangerous issues that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air throughout your house. If the ductwork wasn’t installed right or is getting dated, it can make a lot of noise when your furnace is heating. This can be the issue if your furnace makes a banging noise when it shuts off. Contact Heartland Heating & Cooling at 515-344-3579 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

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

Your furnace uses an internal transformer to operate on the proper voltage. If wires or the box needs to be tightened, you may hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes hot or chilly air throughout your home, and a capacitor, which triggers the motor. If either of these pieces 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 could be due to 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 professionals at 515-344-3579 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s making an effort to alert you 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 realize that maintenance often slips your mind, but our techs can get your furnace running quietly again quickly.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You could also hear whistling while the furnace is on if a floor vent isn’t secure. If you’ve checked your vents but are still noticing sound, Heartland Heating & Cooling can help. It’s essential to get loose ductwork taken care of without delay, because it can result in comfort issues in your home and increase your gas expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal noise often means there’s trouble with your furnace’s blower. Switch off your furnace off instantly and reach us at 515-344-3579 for support.

When you’re noticing a weird noise from your furnace, Heartland Heating & Cooling is here to provide assistance. Contact us at 515-344-3579 to request your furnace repair appointment right away.