When your furnace is working like it should, it should give heat without making too much noise. While it’s expected to notice your furnace making noise as it begins running, other noises are signaling your furnace requires immediate professional assistance.

Here are some of the most common furnace noises and what they could be signaling. If your furnace is making an atypical noise, our friendly heating specialists are here to help with the best furnace repair in Mechanicsburg, Pennsylvania.

1. Furnace Making a Banging Noise

You might have an urgent problem on your hands if you’re detecting 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 problem.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty as time passes, so that’s why it’s essential to book annual furnace maintenance with H & H Service Company. One of the tasks our pros perform during this appointment is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise after ignition takes more time. The ensuing gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warm air. Any breaks in it can leak carbon monoxide, which is normally released outside. This hazardous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, H & H Service Company urges you to turn it off and contacting us at 717-220-4502. Significant natural gas in your furnace or a cracked heat exchanger are hazardous issues that necessitate fast service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver heated air across your house. If the ductwork wasn’t designed correctly or is getting dated, it can be loud when your furnace runs. This might be the problem if your furnace makes a banging noise when it shuts off. Contact H & H Service Company at 717-220-4502 and we’ll determine the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace uses an internal transformer to run on the right voltage. If wires or the box is loose, you could hear a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes heated or cooled air across your rooms, and a capacitor, which starts the motor. If either of these parts are going out, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be the result of something small, like an unsecure screw, or something major, like a broken part. In either case, we recommend shutting off your furnace and contacting our heating professionals at 717-220-4502 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to tell you it requires some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn down or a bearing might need to be greased. We know that maintenance sometimes slips your mind, but our techs can get your furnace operating quietly again fast.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s likely because of an air leak in your ductwork. You could also be aware of whistling while the furnace is operating if a floor vent isn’t tight. If you’ve examined your vents but are still hearing noise, H & H Service Company can help. It’s important to get loose ductwork fixed without delay, as it can create comfort problems in your residence and inflate your heating bills.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal noise usually means there’s a problem with your furnace’s blower. Turn off your furnace off immediately and contact our professionals at 717-220-4502 for support.

When you’re getting a weird noise from your furnace, H & H Service Company is available to help. Contact us at 717-220-4502 to book your furnace repair appointment now.