When your furnace is running correctly, it should provide warmth without making too much sound. While it’s normal to hear your furnace making noise as it begins running, other sounds are showing your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they might be indicating. If your furnace is making an atypical noise, our friendly heating pros are here to fix the problem with the best furnace repair in Auburn and Opelika, Alabama.

1. Furnace Makes Banging or Knocking Sounds

You may have a serious problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might signal there could be a few problems. These involve gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over the years, so that’s why it’s critical to schedule routine furnace maintenance with Farnell Mechanical, Inc.. One of the jobs our pros complete during this appointment is clean your furnace’s burners. When this piece gets grubby, you might hear your furnace making a loud rumbling noise after ignition is delayed. The resulting gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into heat. Any cracks in it can leak carbon monoxide, which is ordinarily emitted outside. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Farnell Mechanical, Inc. urges you to turn it off and contacting us at 334-524-2458. Too much natural gas in your furnace or a broken heat exchanger are hazardous problems that should get immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air throughout your house. If the ductwork wasn’t installed correctly or is aging, it can make a lot of noise when your furnace is heating. This might be the problem if your furnace makes a banging noise when it shuts off. Call Farnell Mechanical, Inc. at 334-524-2458 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace depends on an internal transformer to operate on the right voltage. If wires or the box isn’t tight enough, you may hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends warm or chilly air across your space, and a capacitor, which starts the motor. If either of these components are fading, 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 minor, like an unfastened screw, or something serious, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating professionals at 334-524-2458 for support.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s attempting to alert you it could use some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be greased. We realize that maintenance sometimes slips your mind, but our technicians can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You could 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, Farnell Mechanical, Inc. can provide support. It’s important to get loose ductwork repaired without delay, as it can result in comfort issues in your house and inflate your gas expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal racket often means there’s a problem with your furnace’s blower. Switch off your furnace off immediately and contact our pros at 334-524-2458 for support.

When you’re getting a weird noise from your furnace, Farnell Mechanical, Inc. is available to help. Contact us at 334-524-2458 to schedule your furnace repair appointment today.