When your furnace is working properly, it should provide heat without generating too much disruption. While it’s expected to notice your furnace making noise as it turns on, other noises are indicating your furnace needs immediate professional help.
Here are some of the most common furnace noises and what they might be indicating. If your furnace is making a weird noise, our friendly heating professionals are here to help with the best furnace repair in New Castle, Pennsylvania.
1. Furnace Makes a Banging Sound
You may 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 couple of problems. These range from gas increasing in your furnace or a ductwork issue.
Banging Sounds Coming from Your Furnace
Your heating system becomes grimy as time passes, so that’s why it’s critical to book annual furnace maintenance with Central Heating & Plumbing. One of the jobs our pros complete during this work is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise if ignition takes more time. The following gas buildup may fracture your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can emit carbon monoxide, which is regularly released outside. This dangerous gas can be deadly in large concentrations.
If you’re hearing banging or knocking sounds coming from your furnace, Central Heating & Plumbing urges you to turn it off and contacting us at 724-401-1843. Excessive natural gas in your furnace or a broken heat exchanger are serious problems that should get immediate repairs.
Banging Sounds Coming from Your Ductwork
Your furnace works with ductwork to provide warm air around your residence. If the ductwork wasn’t designed correctly or is getting dated, it can be loud when your furnace runs. This can be the case if your furnace makes a banging noise when it shuts off. Call Central Heating & Plumbing at 724-401-1843 and we’ll determine the problem.
2. Furnace Buzzes Constantly
If you observe your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often means there’s an electrical situation, like with its transformer, blower motor or capacitor.
Your furnace depends on an internal transformer to work on the proper voltage. If wires or the box needs to be tightened, you may detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves hot or chilly air across your residence, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace starts.
3. Furnace Makes Rattling Sounds Like Something Is Loose
If your furnace is making a rattling noise, it may be related to something small, like an unsecure screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and calling our heating specialists at 724-401-1843 for help.
4. Furnace Is Making a High-Pitched Squealing Sound
If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to alert you it requires 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 lubricated. We are aware that maintenance frequently slips your mind, but our technicians can get your furnace running quietly again quickly.
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 could also hear whistling while the furnace is working if a floor vent isn’t secure. If you’ve checked your vents but are still hearing noise, Central Heating & Plumbing can help. It’s important to get loose ductwork fixed quickly, as it can make comfort issues in your house and increase your utility bills.
6. Furnace Makes Noise that Sounds Like Scraping Metal
It’s not a good sign if you hear your furnace making a grinding noise. This metal-on-metal sound typically means there’s trouble with your furnace’s blower. Shut down your furnace off right away and reach our professionals at 724-401-1843 for support.
When you’re noticing a weird noise from your furnace, Central Heating & Plumbing is available to support you. Contact us at 724-401-1843 to book your furnace repair appointment right away.