When your furnace is working properly, it should give heat without generating too much sound. While it’s normal to notice your furnace making noise as it turns on, other sounds are signaling your furnace should get immediate professional support.

Here are some of the most frequent furnace noises and what they could be indicating. If your furnace is making an atypical noise, our friendly heating pros are here to help with the best furnace repair in Cambridge, Maryland.

1. Furnace Makes Banging or Knocking Sounds

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

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over time, so that’s why it’s essential to schedule seasonal furnace maintenance with Pliescott HVAC Services LLC. One of the tasks our professionals do during this service is clean your furnace’s burners. When this component gets dirty, you might hear your furnace making a loud rumbling noise if ignition takes longer than normal. The following gas buildup can break your furnace’s heat exchanger, where natural gas transforms into warmth. Any fractures in it can leak carbon monoxide, which is ordinarily vented outside. This hazardous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Pliescott HVAC Services LLC urges you to turn it off and calling us at 410-228-4822. Significant natural gas in your furnace or a fractured heat exchanger are serious issues that should get fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver warm air throughout your house. If the ductwork wasn’t designed correctly or is getting dated, it can be loud when your furnace is heating. This might be the problem if your furnace makes a banging noise when it shuts off. Call Pliescott HVAC Services LLC at 410-228-4822 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace uses an internal transformer to run on the proper voltage. If wires or the box needs to be tightened, you might notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which sends warm or cold air throughout your residence, and a capacitor, which starts the motor. If either of these components 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 the result of something little, like a loose screw, or something critical, like a broken part. In either case, we urge you to shut your furnace off and contacting our heating professionals at 410-228-4822 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to alert you it could use some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn out or a bearing could need to be greased. We are aware that maintenance sometimes slips your mind, but our pros 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 likely due to an air leak in your ductwork. You could also hear whistling while the furnace is working if a floor vent isn’t tight. If you’ve checked your vents but are still hearing noise, Pliescott HVAC Services LLC can assist you. It’s critical to get loose ductwork repaired without delay, since it can result in comfort troubles in your house and increase your utility costs.

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 frequently means there’s a problem with your furnace’s blower. Switch off your furnace off right away and reach our pros at 410-228-4822 for assistance.

When you’re hearing an atypical noise from your furnace, Pliescott HVAC Services LLC is available to help. Contact us at 410-228-4822 to request your furnace repair appointment now.