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Banging, Screeching and Rattling: What 6 Common Furnace Noises Indicate

When your furnace is working properly, it should deliver heat without making too much noise. While it’s expected to notice your furnace making noise as it turns on, other sounds are showing your furnace needs immediate professional assistance.

Here are some of the most common furnace noises and what they might mean. If your furnace is making an odd noise, our friendly heating specialists are here to assist with the best furnace repair in Lodi.

1. Furnace Making a Banging Noise

You may have a serious problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be several problems. These involve gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy as time passes, so that’s why it’s essential to schedule yearly furnace maintenance with Tokay Heating and Air Conditioning. One of the tasks our pros do during this service 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 following gas buildup may break your furnace’s heat exchanger, where natural gas changes into warm air. Any fractures in it can discharge carbon monoxide, which is ordinarily released away from your home. This toxic gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Tokay Heating and Air Conditioning advises turning it off and contacting us at 209-257-3156. Too much natural gas in your furnace or a fractured heat exchanger are serious issues that should get prompt attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide warm air throughout your residence. If the ductwork wasn’t put in properly or is getting dated, it can be noisy when your furnace runs. This can be the case if your furnace makes a banging noise when it shuts off. Call Tokay Heating and Air Conditioning at 209-257-3156 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 means there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to work on the correct voltage. If wires or the box needs to be tightened, you could notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cooled air around your residence, and a capacitor, which turns on the motor. If either of these pieces are fading, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it might be related to something little, like a loose screw, or something critical, like a broken component. In either case, we recommend shutting off your furnace and calling our heating pros at 209-257-3156 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to get your attention it needs some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be dilapidated or a bearing could need to be lubricated. We are aware that maintenance frequently slips your mind, but our pros can get your furnace heating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing 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 working if a floor vent isn’t secure. If you’ve checked your vents but are still hearing sound, Tokay Heating and Air Conditioning can help. It’s critical to get loose ductwork repaired fast, since it can create comfort troubles in your house and inflate your heating bills.

6. Furnace Making a Grinding Noise

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal noise usually means there’s an issue with your furnace’s blower. Turn off your furnace off instantly and contact our pros at 209-257-3156 for help.

When you’re hearing a strange noise from your furnace, Tokay Heating and Air Conditioning is available to provide assistance. Contact us at 209-257-3156 to schedule your furnace repair appointment today.

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