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Banging, Screeching and Rattling: What 6 Typical Furnace Noises Mean

When your furnace is operating correctly, it should provide warm air without generating too much sound. While it’s common to catch your furnace making noise as it begins running, other disruptions are signaling your furnace requires immediate professional help.

Here are some of the most common furnace noises and what they can be indicating. If your furnace is making a strange noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Odessa.

1. Furnace Making a Banging Noise

You could have a critical issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may indicate there could be a few problems. These involve gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over the years, so that’s why it’s essential to set routine furnace maintenance with Redhawk Heating & Air Conditioning. One of the tasks our professionals complete during this service is clean your furnace’s burners. When this part gets dirty, you may hear your furnace making a loud rumbling noise if ignition takes more time. The resulting gas buildup can crack your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can discharge carbon monoxide, which is ordinarily vented outside. This hazardous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Redhawk Heating & Air Conditioning urges you to turn it off and calling us at 432-237-0168. Excessive natural gas in your furnace or a fractured heat exchanger are hazardous troubles that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move hot air across your residence. If the ductwork wasn’t designed properly or is getting dated, it can make a lot of noise when your furnace is on. This can be the case if your furnace makes a banging noise when it shuts off. Call Redhawk Heating & Air Conditioning at 432-237-0168 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t wait to call us. A buzzing sound frequently 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 might notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which moves heated or chilly air throughout your home, and a capacitor, which triggers 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 might be due to something minor, like an unfastened screw, or something serious, like a broken piece. In either case, we recommend shutting off your furnace and contacting our heating pros at 432-237-0168 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s running, it’s trying to get your attention it needs some TLC. If you’ve neglected furnace maintenance the past few years, belts could be worn down or a bearing might need to be lubed. We are aware that maintenance frequently slips your mind, but our pros can get your furnace heating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You may also hear whistling while the furnace is operating if a floor vent is loose. If you’ve checked your vents but are still hearing sound, Redhawk Heating & Air Conditioning can provide support. It’s important to get loose ductwork fixed fast, as it can make comfort problems in your home and inflate your energy costs.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal sound often means there’s trouble with your furnace’s blower. Shut down your furnace off now and contact our professionals at 432-237-0168 for support.

When you’re hearing a weird noise from your furnace, Redhawk Heating & Air Conditioning is available to help. Contact us at 432-237-0168 to schedule your furnace repair appointment today.

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