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

When your furnace is running correctly, it should deliver warm air without creating too much sound. While it’s normal to notice your furnace making noise as it turns on, other disruptions are signaling your furnace needs immediate professional support.

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

1. Furnace Making a Banging Noise

You may 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 several problems. These involve gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy as time passes, so that’s why it’s critical to schedule annual furnace maintenance with Faust Air Conditioning and Heating. One of the tasks our technicians do during this appointment is clean your furnace’s burners. When this piece gets grubby, you might hear your furnace making a loud rumbling noise when ignition takes longer than normal. The resulting gas buildup might crack your furnace’s heat exchanger, where natural gas changes into heat. Any fractures in it can discharge carbon monoxide, which is regularly released outside. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Faust Air Conditioning and Heating recommends turning it off and contacting us at 979-323-6130. Significant natural gas in your furnace or a fractured heat exchanger are hazardous problems that should get fast attention.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to provide warm air across your house. If the ductwork wasn’t installed properly or is getting dated, it can be loud when your furnace is heating. This may be the issue if your furnace makes a banging noise when it shuts off. Call Faust Air Conditioning and Heating at 979-323-6130 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically is telling you there’s 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 needs to be tightened, you might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends heated or cooled air around your home, and a capacitor, which starts 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 due to something little, like a loose screw, or something serious, like a broken piece. In either case, we advise shutting your furnace off and contacting our heating specialists at 979-323-6130 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to get your attention it requires some TLC. If you’ve skipped furnace maintenance recently, belts could be dilapidated or a bearing could need to be lubed. We are aware that maintenance frequently slips your mind, but our technicians can get your furnace heating quietly again fast.

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 noticing whistling, Faust Air Conditioning and Heating can provide support. It’s essential to get loose ductwork fixed without delay, since it can create comfort troubles in your residence and drive up your gas expenses.

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 a problem with your furnace’s blower. Switch off your furnace off instantly and reach our professionals at 979-323-6130 for support.

When you’re noticing an uncommon noise from your furnace, Faust Air Conditioning and Heating is here to provide assistance. Contact us at 979-323-6130 to book your furnace repair appointment now.

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