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

Here are some of the most reported furnace noises and what they can mean. If your furnace is making an atypical noise, our friendly heating specialists are here to help with the best furnace repair in Saint Louis, Missouri.

1. Furnace Makes Banging or Knocking Sounds

You could have a serious situation on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a few problems. These involve gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over the years, so that’s why it’s critical to schedule routine furnace maintenance with Morgner Inc. Air Conditioning & Heating. One of the things our pros perform during this work is clean your furnace’s burners. When this piece gets dirty, you may hear your furnace making a loud rumbling noise when ignition takes more time. The ensuing gas buildup can break your furnace’s heat exchanger, where natural gas transforms into heat. Any cracks in it can leak carbon monoxide, which is normally vented outside. This hazardous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Morgner Inc. Air Conditioning & Heating advises turning it off and calling us at 314-262-4541. Too much natural gas in your furnace or a fractured heat exchanger are hazardous problems that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to move heated air around your home. If the ductwork wasn’t installed right or is aging, it can be noisy when your furnace runs. This can be the case 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 Making a Buzzing Noise

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

Your furnace relies on an internal transformer to work on the proper voltage. If wires or the box is loose, you might detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves warm or cooled air across your residence, and a capacitor, which turns on the motor. If either of these pieces are going out, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be related to something small, like an unsecure screw, or something serious, like a broken part. In either case, we recommend shutting off your furnace and getting in touch with our heating specialists at 314-262-4541 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to tell you it requires some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing may need to be lubed. We know that maintenance frequently 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 noticing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You might also be aware of whistling while the furnace is operating if a floor vent isn’t tight. If you’ve looked at your vents but are still hearing noise, Morgner Inc. Air Conditioning & Heating can assist you. It’s critical to get loose ductwork taken care of without delay, as it can make comfort issues in your house and inflate your utility expenses.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal noise frequently means there’s trouble with your furnace’s blower. Shut down your furnace off right away and contact our pros at 314-262-4541 for support.

When you’re hearing a strange noise from your furnace, Morgner Inc. Air Conditioning & Heating is available to support you. Contact us at 314-262-4541 to schedule your furnace repair appointment now.