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Banging, Screeching and Rattling: What 6 Ordinary Furnace Noises Signify

When your furnace is running properly, it should give heat without making too much sound. While it’s common to notice your furnace making noise as it turns on, other disruptions are signaling your furnace requires immediate professional assistance.

Here are some of the most reported furnace noises and what they could be signaling. If your furnace is making an odd noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Lawrence.

1. Furnace Making a Banging Noise

You could have a serious problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be a couple of problems. These include gas accumulating in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty over time, so that’s why it’s essential to book yearly furnace maintenance with Scott Temperature. One of the jobs our professionals do during this work is clean your furnace’s burners. When this piece gets grimy, you may hear your furnace making a loud rumbling noise if ignition takes more time. The subsequent gas buildup might break your furnace’s heat exchanger, where natural gas transforms into heat. Any fractures in it can emit carbon monoxide, which is normally vented outdoors. This dangerous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Scott Temperature advises turning it off and contacting us at 785-269-0465. Too much natural gas in your furnace or a fractured heat exchanger are critical issues that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver hot air across your house. If the ductwork wasn’t installed right or is getting old, it can be loud when your furnace runs. This could be the problem if your furnace makes a banging noise when it shuts off. Contact Scott Temperature at 785-269-0465 and we’ll figure out 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 usually indicates an electrical issue, like with its transformer, blower motor or capacitor.

Your furnace relies on an internal transformer to work on the proper voltage. If wires or the box needs to be tightened, you could detect a low humming noise in the furnace when off. Your furnace also has a blower motor, which sends warm or cooled air throughout your space, and a capacitor, which starts the motor. If either of these parts are failing, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be related to something little, like an unsecure screw, or something serious, like a broken part. In either case, we advise shutting your furnace off and contacting our heating specialists at 785-269-0465 for assistance.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to alert you it needs some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be dilapidated or a bearing could need to be lubed. We are aware that maintenance often slips your mind, but our professionals can get your furnace running quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s frequently the result of an air leak in your ductwork. You could also hear whistling while the furnace is operating if a floor vent isn’t secure. If you’ve looked at your vents but are still hearing sound, Scott Temperature can assist you. It’s essential to get loose ductwork fixed fast, because it can create comfort troubles in your residence 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 noise frequently means there’s an issue with your furnace’s blower. Turn off your furnace off right away and reach our professionals at 785-269-0465 for support.

When you’re hearing an atypical noise from your furnace, Scott Temperature is here to support you. Contact us at 785-269-0465 to schedule your furnace repair appointment today.

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