When your furnace is operating correctly, it should provide warmth without generating too much disruption. While it’s common to hear your furnace making noise as it turns on, other disruptions are showing your furnace needs immediate professional help.

Here are some of the most common furnace noises and what they might be signaling. If your furnace is making a strange noise, our friendly heating pros are here to fix the problem with the best furnace repair in Siloam Springs, Arkansas.

1. Furnace Makes Banging or Knocking Sounds

You might have an urgent issue 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 include gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over the years, so that’s why it’s essential to set yearly furnace maintenance with Siloam Springs Heating & AC. One of the things our technicians do during this work is clean your furnace’s burners. When this part gets grubby, you might hear your furnace making a loud rumbling noise if ignition takes longer than normal. The resulting gas buildup can fracture your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can discharge carbon monoxide, which is regularly vented outdoors. This toxic gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Siloam Springs Heating & AC recommends turning it off and contacting us at 479-308-8176. Too much natural gas in your furnace or a ruptured heat exchanger are dangerous issues that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air around your home. If the ductwork wasn’t designed correctly or is aging, it can be loud when your furnace runs. This may be the case if your furnace makes a banging noise when it shuts off. Get in touch with Siloam Springs Heating & AC at 479-308-8176 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically is telling you there’s an electrical problem, 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 needs to be tightened, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves hot or cold air across your house, and a capacitor, which turns on the motor. If either of these pieces are going out, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be related to something little, like a loose screw, or something serious, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating specialists at 479-308-8176 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to alert you it requires some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn down or a bearing might need to be greased. We know that maintenance frequently slips your mind, but our technicians can get your furnace heating quietly again rapidly.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You may also be aware of whistling while the furnace is running if a floor vent isn’t tight. If you’ve examined your vents but are still sensing whistling, Siloam Springs Heating & AC can help. It’s important to get loose ductwork fixed without delay, as it can make comfort troubles in your house and inflate your utility bills.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging 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. Switch off your furnace off now and reach our professionals at 479-308-8176 for assistance.

When you’re getting a strange noise from your furnace, Siloam Springs Heating & AC is ready to help. Contact us at 479-308-8176 to book your furnace repair appointment today.