When your furnace is running like it should, it should provide warmth without making too much noise. While it’s expected to catch your furnace making noise as it starts up, other sounds are showing your furnace needs immediate professional assistance.

Here are some of the most reported furnace noises and what they could be indicating. If your furnace is making a weird noise, our friendly heating pros are here to assist with the best furnace repair in New Castle, Pennsylvania.

1. Furnace Makes a Banging Sound

You might have a critical problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be a few problems. These range from gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over time, so that’s why it’s important to set annual furnace maintenance with Central Heating & Plumbing. One of the jobs our techs do during this appointment is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise if ignition takes longer than normal. The subsequent gas buildup might crack your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can leak carbon monoxide, which is normally vented outside. This dangerous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Central Heating & Plumbing recommends turning it off and contacting us at 724-401-1843. Significant natural gas in your furnace or a fractured heat exchanger are serious problems that should get immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver warm air throughout your house. If the ductwork wasn’t put in correctly or is aging, it can be noisy when your furnace runs. This can be the issue 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 determine the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace depends on an internal transformer to run on the right voltage. If wires or the box isn’t tight enough, you might notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes hot or chilly air around your residence, and a capacitor, which triggers the motor. If either of these parts 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 the result of something small, like an unfastened screw, or something serious, like a broken component. In either case, we recommend shutting off your furnace and contacting our heating specialists at 724-401-1843 for assistance.

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 trying to tell you it needs some TLC. If you’ve neglected furnace maintenance the past few years, belts could be worn down or a bearing could need to be greased. We realize that maintenance frequently slips your mind, but our pros can get your furnace operating quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You may also hear whistling while the furnace is operating if a floor vent isn’t tight. If you’ve examined your vents but are still noticing noise, Central Heating & Plumbing can assist you. It’s important to get loose ductwork taken care of fast, since it can create comfort troubles in your residence and inflate your utility costs.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound often means there’s a problem with your furnace’s blower. Turn off your furnace off right away and reach our professionals at 724-401-1843 for assistance.

When you’re hearing an uncommon noise from your furnace, Central Heating & Plumbing is here to provide assistance. Contact us at 724-401-1843 to request your furnace repair appointment today.