When your furnace is working properly, it should provide heat without creating too much disruption. While it’s common to hear your furnace making noise as it turns on, other disruptions are indicating your furnace should get immediate professional assistance.

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

1. Furnace Making a Banging Noise

You might have an urgent problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be a couple of problems. These include gas accumulating 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 critical to set routine furnace maintenance with Bell Mechanical Services. One of the tasks our professionals perform during this appointment is clean your furnace’s burners. When this piece gets grimy, you could hear your furnace making a loud rumbling noise when ignition takes longer than normal. The following gas buildup may crack your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can leak carbon monoxide, which is normally vented outside. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Bell Mechanical Services recommends turning it off and reaching us at 888-863-0560. Too much natural gas in your furnace or a cracked heat exchanger are critical troubles that require immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move warm air throughout your house. If the ductwork wasn’t installed right or is aging, it can make a lot of noise when your furnace runs. This might be the issue if your furnace makes a banging noise when it shuts off. Contact Bell Mechanical Services at 888-863-0560 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to run on the proper voltage. If wires or the box is loose, you could notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes heated or cooled air around your home, and a capacitor, which starts the motor. If either of these components are fading, 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 critical, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 888-863-0560 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to tell you it needs some TLC. If you’ve neglected furnace maintenance recently, belts could be worn out or a bearing could need to be greased. We know that maintenance frequently slips your mind, but our pros can get your furnace running quietly again fast.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You may also hear whistling while the furnace is working if a floor vent is loose. If you’ve looked at your vents but are still noticing whistling, Bell Mechanical Services can provide support. It’s critical to get loose ductwork fixed without delay, because it can create comfort troubles in your house and increase your gas 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 sound frequently means there’s an issue with your furnace’s blower. Switch off your furnace off promptly and call us at 888-863-0560 for support.

When you’re getting a strange noise from your furnace, Bell Mechanical Services is here to help. Contact us at 888-863-0560 to request your furnace repair appointment now.