When your furnace is operating properly, it should give warm air without generating too much noise. While it’s common to hear your furnace making noise as it turns on, other noises are indicating your furnace requires immediate professional assistance.
Here are some of the most frequent furnace noises and what they can be signaling. If your furnace is making an atypical noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Frederick, Maryland.
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 mean there could be several problems. These involve gas accumulating in your furnace or a ductwork problem.
Banging Sounds Coming from Your Furnace
Your heating system gets grimy as time passes, so that’s why it’s essential to book routine furnace maintenance with May's Heating & Air. One of the jobs our professionals perform during this work is clean your furnace’s burners. When this part gets dirty, you may hear your furnace making a loud rumbling noise if ignition is delayed. The subsequent gas buildup can crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any cracks in it can discharge carbon monoxide, which is regularly emitted away from your home. This dangerous gas can be deadly in large concentrations.
If you’re noticing banging or knocking sounds coming from your furnace, May's Heating & Air advises turning it off and reaching us at 301-690-0397. Significant natural gas in your furnace or a ruptured heat exchanger are hazardous troubles that necessitate fast attention.
Banging Sounds Coming from Your Ductwork
Your furnace relies on ductwork to deliver heated air across your home. If the ductwork wasn’t designed correctly or is getting old, it can be loud when your furnace is on. This might be the case if your furnace makes a banging noise when it shuts off. Contact May's Heating & Air at 301-690-0397 and we’ll pinpoint the problem.
2. Furnace Making a Buzzing Noise
If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.
Your furnace depends on an internal transformer to operate on the proper voltage. If wires or the box needs to be tightened, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes hot or chilly air across your residence, and a capacitor, which starts the motor. If either of these pieces are fading, they will buzz when the furnace turns on.
3. Furnace Making a Rattling Noise
If your furnace is making a rattling noise, it can be the result of something small, like a loose screw, or something serious, like a broken component. In either case, we recommend shutting off your furnace and contacting our heating specialists at 301-690-0397 for assistance.
4. Furnace Making a Squealing Noise
If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to alert you it needs some TLC. If you’ve neglected furnace maintenance the past few years, belts could be worn down or a bearing may need to be greased. We realize that maintenance frequently slips your mind, but our technicians can get your furnace operating quietly again fast.
5. Furnace Making a Whistling Noise
When you’re detecting your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You may also notice whistling while the furnace is working if a floor vent isn’t tight. If you’ve examined your vents but are still noticing whistling, May's Heating & Air can provide support. It’s critical to get loose ductwork taken care of without delay, as it can create comfort issues in your house and inflate your gas costs.
6. Furnace Making a Grinding Noise
It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise often means there’s an issue with your furnace’s blower. Shut down your furnace off right away and call our pros at 301-690-0397 for support.
When you’re hearing an atypical noise from your furnace, May's Heating & Air is ready to provide assistance. Contact us at 301-690-0397 to schedule your furnace repair appointment today.