When your furnace is running like it should, it should give heat without creating too much noise. While it’s normal to hear your furnace making noise as it begins running, other sounds are signaling your furnace requires immediate professional help.

Here are some of the most reported furnace noises and what they might be signaling. If your furnace is making an atypical noise, our friendly heating professionals are here to help with the best furnace repair in Cottonwood & Prescott, Arizona.

1. Furnace Making a Banging Noise

You may 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 might signal there could be a couple of problems. These range from gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over the years, so that’s why it’s important to book yearly furnace maintenance with Connolly Electric & Mechanical. One of the tasks our techs do during this work is clean your furnace’s burners. When this part gets grimy, you may hear your furnace making a loud rumbling noise when ignition takes more time. The ensuing gas buildup can crack your furnace’s heat exchanger, where natural gas transforms into warmth. Any breaks in it can emit carbon monoxide, which is regularly emitted outdoors. This toxic gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Connolly Electric & Mechanical urges you to turn it off and reaching us at 928-251-4327. Too much natural gas in your furnace or a fractured heat exchanger are hazardous troubles that necessitate prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air around your home. If the ductwork wasn’t put in correctly or is getting dated, 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 Connolly Electric & Mechanical at 928-251-4327 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t wait to call us. A buzzing sound usually means there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to work on the right voltage. If wires or the box needs to be tightened, you could detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves hot or chilly air throughout your house, and a capacitor, which starts the motor. If either of these parts are failing, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be the result of something minor, like an unsecure screw, or something serious, like a broken component. In either case, we recommend shutting off your furnace and calling our heating pros at 928-251-4327 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to alert you it needs some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn down or a bearing may need to be greased. We know that maintenance often slips your mind, but our pros can get your furnace heating quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You may also be aware of whistling while the furnace is running if a floor vent isn’t secure. If you’ve examined your vents but are still hearing noise, Connolly Electric & Mechanical can provide support. It’s critical to get loose ductwork taken care of quickly, since it can result in comfort problems in your house and increase your heating bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good 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. Shut down your furnace off now and call our professionals at 928-251-4327 for assistance.

When you’re getting a weird noise from your furnace, Connolly Electric & Mechanical is ready to provide assistance. Contact us at 928-251-4327 to book your furnace repair appointment today.