When your furnace is working properly, it should provide heat without generating too much disruption. While it’s normal to notice your furnace making noise as it starts up, other noises are showing your furnace should get immediate professional support.

Here are some of the most reported furnace noises and what they could mean. If your furnace is making a strange noise, our friendly heating pros are here to fix the problem with the best furnace repair in Saint Louis, Missouri.

1. Furnace Makes a Banging Sound

You could have a serious problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might mean 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 gets dirty as time passes, so that’s why it’s critical to schedule yearly furnace maintenance with Morgner Inc. Air Conditioning & Heating. One of the things our technicians perform during this appointment is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise if ignition is delayed. The resulting gas buildup can break your furnace’s heat exchanger, where natural gas transforms into warm air. Any cracks in it can emit carbon monoxide, which is normally emitted away from your home. This toxic gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Morgner Inc. Air Conditioning & Heating advises turning it off and calling us at 314-262-4541. Significant natural gas in your furnace or a cracked heat exchanger are critical troubles that should get immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move hot air throughout your house. If the ductwork wasn’t put in properly or is getting old, it can make a lot of noise when your furnace is on. This may be the problem if your furnace makes a banging noise when it shuts off. Call Morgner Inc. Air Conditioning & Heating at 314-262-4541 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically means there’s an electrical problem, 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 works with a blower motor, which distributes heated or cold air around your space, and a capacitor, which triggers the motor. If either of these parts are going out, they will buzz when the furnace switches on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it can be due to something minor, like a loose screw, or something major, like a broken piece. In either case, we recommend shutting off your furnace and calling our heating professionals at 314-262-4541 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s making an effort to tell you it could use some TLC. If you’ve skipped furnace maintenance recently, belts could be worn down or a bearing might need to be greased. We know that maintenance often slips your mind, but our professionals can get your furnace heating quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You might also notice whistling while the furnace is working if a floor vent isn’t secure. If you’ve checked your vents but are still noticing sound, Morgner Inc. Air Conditioning & Heating can assist you. It’s critical to get loose ductwork taken care of quickly, because it can make comfort issues in your residence and increase your gas expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal racket typically means there’s a problem with your furnace’s blower. Turn off your furnace off instantly and call our professionals at 314-262-4541 for support.

When you’re getting an atypical noise from your furnace, Morgner Inc. Air Conditioning & Heating is ready to support you. Contact us at 314-262-4541 to book your furnace repair appointment now.