When your furnace is working properly, it should deliver warmth without creating too much noise. While it’s common to notice your furnace making noise as it starts up, other disruptions are signaling your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they could mean. If your furnace is making a strange noise, our friendly heating professionals are here to assist with the best furnace repair in Reinholds, Pennsylvania.

1. Furnace Makes Banging or Knocking Sounds

You may have a critical problem 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 few problems. These include gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over the years, so that’s why it’s important to set yearly furnace maintenance with County Line Mechanical LLC. One of the things our techs complete during this service is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise if ignition is delayed. 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 ordinarily released away from your home. This dangerous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, County Line Mechanical LLC recommends turning it off and calling us at 717-216-0846. Excessive natural gas in your furnace or a cracked heat exchanger are dangerous issues that should get prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide warm air throughout your house. If the ductwork wasn’t designed correctly or is getting old, it can be noisy when your furnace is heating. This could be the problem if your furnace makes a banging noise when it shuts off. Call County Line Mechanical LLC at 717-216-0846 and we’ll determine the problem.

2. Furnace Buzzes Constantly

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

Your furnace depends on an internal transformer to work on the correct voltage. If wires or the box is loose, you could notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves heated or chilly air across your residence, and a capacitor, which starts the motor. If either of these parts are failing, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be the result of something small, like an unfastened screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and contacting our heating pros at 717-216-0846 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, 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 out or a bearing may need to be greased. We are aware that maintenance frequently slips your mind, but our pros can get your furnace operating quietly again quickly.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent isn’t tight. If you’ve examined your vents but are still sensing sound, County Line Mechanical LLC can provide support. It’s important to get loose ductwork repaired quickly, because it can create comfort issues in your house and drive up your gas costs.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal noise typically means there’s an issue with your furnace’s blower. Shut down your furnace off instantly and call our professionals at 717-216-0846 for support.

When you’re getting an uncommon noise from your furnace, County Line Mechanical LLC is available to help. Contact us at 717-216-0846 to request your furnace repair appointment now.