When your furnace is operating properly, it should give warmth without generating too much disruption. While it’s common to hear your furnace making noise as it turns on, other sounds are signaling your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they can mean. If your furnace is making a strange noise, our friendly heating pros are here to help with the best furnace repair in Excelsior Springs, Missouri.

1. Furnace Making a Banging Noise

You could have a critical issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a couple of problems. These involve gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over time, so that’s why it’s essential to set annual furnace maintenance with Colvin's Heating and Cooling. One of the tasks our techs perform during this service is clean your furnace’s burners. When this piece gets dirty, you might hear your furnace making a loud rumbling noise if ignition is delayed. The resulting gas buildup may crack your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can emit carbon monoxide, which is ordinarily released outdoors. This dangerous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Colvin's Heating and Cooling urges you to turn it off and calling us at 816-379-3918. Excessive natural gas in your furnace or a ruptured heat exchanger are hazardous issues that require fast service.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move hot air throughout your home. If the ductwork wasn’t installed properly or is aging, it can be noisy when your furnace runs. This can be the problem if your furnace makes a banging noise when it shuts off. Contact Colvin's Heating and Cooling at 816-379-3918 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound typically is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to operate on the correct voltage. If wires or the box is loose, you may notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves heated or cooled air across your residence, and a capacitor, which triggers the motor. If either of these components 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 due to something little, like an unfastened screw, or something major, like a broken piece. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 816-379-3918 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to tell you it requires some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing may need to be greased. We realize that maintenance often slips your mind, but our pros can get your furnace running quietly again fast.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You may also hear whistling while the furnace is working if a floor vent isn’t secure. If you’ve checked your vents but are still noticing sound, Colvin's Heating and Cooling can provide support. It’s important to get loose ductwork taken care of quickly, as it can result in comfort problems in your house and increase your utility bills.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal racket usually means there’s trouble with your furnace’s blower. Switch off your furnace off instantly and reach our professionals at 816-379-3918 for help.

When you’re getting a strange noise from your furnace, Colvin's Heating and Cooling is here to support you. Contact us at 816-379-3918 to request your furnace repair appointment today.