When your furnace is running correctly, it should provide heat without creating too much noise. While it’s common to catch your furnace making noise as it starts up, other noises are showing your furnace should get immediate professional help.

Here are some of the most reported furnace noises and what they could be indicating. If your furnace is making an odd noise, our friendly heating pros are here to help with the best furnace repair in Marshalltown, Iowa.

1. Furnace Making a Banging Noise

You may have a critical problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be several problems. These involve gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s important to book yearly furnace maintenance with Kapaun & Brown. One of the jobs our professionals perform during this appointment is clean your furnace’s burners. When this part gets dirty, you might hear your furnace making a loud rumbling noise if ignition takes more time. The resulting gas buildup can crack your furnace’s heat exchanger, where natural gas transforms into warmth. Any cracks in it can emit carbon monoxide, which is normally released away from your home. This hazardous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Kapaun & Brown recommends turning it off and reaching us at 641-812-2028. Too much natural gas in your furnace or a broken heat exchanger are dangerous troubles that require fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver heated air around your home. If the ductwork wasn’t designed correctly or is getting old, it can be noisy when your furnace is heating. This could be the case if your furnace makes a banging noise when it shuts off. Contact Kapaun & Brown at 641-812-2028 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 frequently means there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to work on the right voltage. If wires or the box is loose, you could hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes hot or cooled air around your rooms, and a capacitor, which triggers the motor. If either of these components are failing, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be due to something small, like an unsecure screw, or something major, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at 641-812-2028 for support.

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 get your attention it requires some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn out or a bearing might need to be lubricated. We are aware that maintenance frequently slips your mind, but our professionals can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You might also notice whistling while the furnace is working if a floor vent isn’t tight. If you’ve checked your vents but are still sensing sound, Kapaun & Brown can help. It’s essential to get loose ductwork taken care of quickly, because it can result in comfort issues in your home and increase your heating costs.

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 sound usually means there’s trouble with your furnace’s blower. Shut down your furnace off immediately and contact our professionals at 641-812-2028 for assistance.

When you’re hearing an uncommon noise from your furnace, Kapaun & Brown is here to provide assistance. Contact us at 641-812-2028 to request your furnace repair appointment today.