When your furnace is working correctly, it should provide warm air without generating too much noise. While it’s expected to catch your furnace making noise as it starts up, other noises are showing your furnace should get immediate professional assistance.

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

1. Furnace Makes Banging or Knocking Sounds

You might have a serious issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be several problems. These include gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns grimy over time, so that’s why it’s critical to set routine furnace maintenance with Siloam Springs Heating & AC. One of the jobs our pros do during this appointment is clean your furnace’s burners. When this piece gets grimy, you may 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 turns into heat. Any breaks in it can discharge carbon monoxide, which is normally released outdoors. This hazardous gas can be lethal 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 calling us at 479-308-8176. Too much natural gas in your furnace or a broken heat exchanger are dangerous troubles that necessitate prompt service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver heated air around your home. If the ductwork wasn’t installed right or is aging, it can be noisy when your furnace runs. This may be the problem 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 Buzzes Constantly

If you observe your furnace making a buzzing noise, don’t wait 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 correct voltage. If wires or the box isn’t tight enough, you could detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes hot or cooled air around your rooms, and a capacitor, which starts the motor. If either of these components are fading, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be the result of something little, like an unfastened screw, or something critical, like a broken piece. In either case, we recommend shutting off your furnace and getting in touch with our heating pros at 479-308-8176 for support.

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 requires some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn out or a bearing might need to be lubricated. We are aware that maintenance frequently slips your mind, but our technicians can get your furnace running quietly again fast.

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 may also be aware of whistling while the furnace is on if a floor vent isn’t tight. If you’ve looked at your vents but are still noticing sound, Siloam Springs Heating & AC can assist you. It’s essential to get loose ductwork fixed fast, because it can result in comfort troubles in your home and increase your gas bills.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal noise often means there’s trouble with your furnace’s blower. Switch off your furnace off immediately and contact us at 479-308-8176 for assistance.

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