When your furnace is operating properly, it should give warm air without creating too much noise. While it’s common to catch your furnace making noise as it turns on, other sounds are indicating your furnace needs immediate professional assistance.

Here are some of the most reported furnace noises and what they might mean. If your furnace is making an odd noise, our friendly heating pros are here to assist with the best furnace repair in New Castle, Pennsylvania.

1. Furnace Makes Banging or Knocking Sounds

You could 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 mean there could be several problems. These involve gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over time, so that’s why it’s critical to book yearly furnace maintenance with Central Heating & Plumbing. One of the jobs our professionals do during this appointment is clean your furnace’s burners. When this component gets dirty, you may hear your furnace making a loud rumbling noise when ignition takes longer than normal. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can leak carbon monoxide, which is regularly released outside. This hazardous gas can be lethal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Central Heating & Plumbing recommends turning it off and reaching us at 724-401-1843. Significant natural gas in your furnace or a fractured heat exchanger are hazardous problems that require prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide hot air across your house. If the ductwork wasn’t designed right or is getting dated, it can be noisy when your furnace runs. This can be the case if your furnace makes a banging noise when it shuts off. Get in touch with Central Heating & Plumbing at 724-401-1843 and we’ll pinpoint the problem.

2. Furnace Makes a Buzzing Sound

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound usually is telling you there’s an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to work on the right voltage. If wires or the box is loose, you might notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cooled air around your rooms, and a capacitor, which starts the motor. If either of these components are failing, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be related to something small, like an unfastened screw, or something serious, like a broken component. In either case, we recommend shutting off your furnace and getting in touch with our heating professionals at 724-401-1843 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s making an effort to alert you it needs some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing might need to be lubricated. We are aware that maintenance frequently 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 likely because of an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent isn’t secure. If you’ve examined your vents but are still noticing sound, Central Heating & Plumbing can assist you. It’s important to get loose ductwork repaired without delay, as it can result in comfort troubles in your home and increase your utility costs.

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 often means there’s trouble with your furnace’s blower. Shut down your furnace off immediately and reach our professionals at 724-401-1843 for assistance.

When you’re hearing a weird noise from your furnace, Central Heating & Plumbing is here to support you. Contact us at 724-401-1843 to schedule your furnace repair appointment right away.