When your furnace is operating correctly, it should provide heat without generating too much disruption. While it’s expected to notice your furnace making noise as it starts up, other disruptions are signaling your furnace needs immediate professional assistance.

Here are some of the most common furnace noises and what they might mean. If your furnace is making a weird noise, our friendly heating pros are here to help with the best furnace repair in Eastland, Texas.

1. Furnace Makes a Banging Sound

You might have a serious 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 few problems. These range from gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system becomes dirty as time passes, so that’s why it’s critical to set annual furnace maintenance with J & J Air Conditioning. One of the jobs our techs perform during this service is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise when ignition is delayed. The following gas buildup might crack your furnace’s heat exchanger, where natural gas turns into warm air. Any cracks in it can discharge carbon monoxide, which is normally released outside. This dangerous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, J & J Air Conditioning advises turning it off and reaching us at 254-355-3833. Excessive natural gas in your furnace or a cracked heat exchanger are critical issues that necessitate immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air around your house. If the ductwork wasn’t designed correctly or is getting old, it can be noisy when your furnace runs. This can be the issue if your furnace makes a banging noise when it shuts off. Call J & J Air Conditioning at 254-355-3833 and we’ll pinpoint the problem.

2. Furnace Buzzes Constantly

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

Your furnace uses an internal transformer to operate on the proper voltage. If wires or the box is loose, you may notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends heated or cooled air across your house, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace turns on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be related to something little, like an unfastened screw, or something critical, like a broken part. In either case, we recommend shutting off your furnace and contacting our heating specialists at 254-355-3833 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to get your attention it could use some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn out or a bearing might need to be lubricated. We realize that maintenance often slips your mind, but our professionals can get your furnace heating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You could also notice whistling while the furnace is working if a floor vent isn’t secure. If you’ve looked at your vents but are still noticing sound, J & J Air Conditioning can help. It’s essential to get loose ductwork repaired quickly, since it can create comfort issues in your home and increase your heating costs.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise typically means there’s a problem with your furnace’s blower. Switch off your furnace off right away and call our professionals at 254-355-3833 for assistance.

When you’re getting an uncommon noise from your furnace, J & J Air Conditioning is ready to provide assistance. Contact us at 254-355-3833 to schedule your furnace repair appointment now.