When your furnace is operating correctly, it should provide warmth without making too much disruption. While it’s common to hear your furnace making noise as it starts up, other noises are indicating your furnace needs immediate professional help.

Here are some of the most frequent furnace noises and what they might be indicating. If your furnace is making an atypical noise, our friendly heating specialists are here to assist with the best furnace repair in Lawrence, Kansas.

1. Furnace Makes Banging or Knocking Sounds

You could have a serious issue on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can indicate there could be a couple of problems. These involve gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty as time passes, so that’s why it’s essential to set routine furnace maintenance with Scott Temperature. One of the jobs our pros do during this appointment is clean your furnace’s burners. When this component gets grimy, you might hear your furnace making a loud rumbling noise if ignition takes more time. The subsequent gas buildup can fracture your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can emit carbon monoxide, which is regularly vented away from your home. This toxic gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Scott Temperature recommends turning it off and reaching us at 785-269-0465. Too much natural gas in your furnace or a fractured heat exchanger are critical problems that should get immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver heated air throughout your home. If the ductwork wasn’t designed right or is getting old, it can be noisy when your furnace is heating. This can be the issue if your furnace makes a banging noise when it shuts off. Contact Scott Temperature at 785-269-0465 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace uses an internal transformer to operate on the correct voltage. If wires or the box isn’t tight enough, you may detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves heated or cooled air throughout your space, and a capacitor, which turns on the motor. If either of these pieces are going out, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be the result of something little, like a loose screw, or something critical, like a broken part. In either case, we advise shutting your furnace off and calling our heating specialists at 785-269-0465 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to alert you it could use some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn down or a bearing could need to be lubricated. We realize that maintenance frequently slips your mind, but our techs can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You could also hear whistling while the furnace is running if a floor vent isn’t secure. If you’ve checked your vents but are still noticing sound, Scott Temperature can help. It’s critical to get loose ductwork repaired fast, as it can result in comfort troubles in your home and increase your heating bills.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you hear your furnace making a grinding noise. This metal-on-metal sound frequently means there’s trouble with your furnace’s blower. Turn off your furnace off promptly and contact our professionals at 785-269-0465 for help.

When you’re noticing a strange noise from your furnace, Scott Temperature is here to help. Contact us at 785-269-0465 to request your furnace repair appointment right away.