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

October 13, 2020

When your furnace is operating correctly, it should provide heat without making too much noise. While it’s normal to hear your furnace making noise as it starts up, other noises are indicating your furnace requires immediate professional support.

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

1. Furnace Making a Banging Noise

You could 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 can mean there could be a couple of problems. These involve gas accumulating in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system becomes grimy over time, so that’s why it’s important to book seasonal furnace maintenance with Stephen Hurst Pack Heating and Cooling, Inc. One of the tasks our professionals perform during this service is clean your furnace’s burners. When this component gets grimy, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The following gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warmth. Any breaks in it can discharge carbon monoxide, which is normally released away from your home. This dangerous gas can be deadly in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Stephen Hurst Pack Heating and Cooling, Inc advises turning it off and contacting us at 740-474-5940. Too much natural gas in your furnace or a cracked heat exchanger are hazardous problems that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move warm air throughout your home. If the ductwork wasn’t put in right or is getting old, it can be noisy when your furnace is on. This may be the issue if your furnace makes a banging noise when it shuts off. Contact Stephen Hurst Pack Heating and Cooling, Inc at 740-474-5940 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

If you hear your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound often indicates an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to work on the proper voltage. If wires or the box is loose, you could notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends hot or chilly air around your residence, and a capacitor, which triggers the motor. If either of these parts are going out, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be the result of something little, like an unsecure screw, or something critical, like a broken piece. In either case, we urge you to shut your furnace off and getting in touch with our heating specialists at 740-474-5940 for help.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s trying to tell you it could use some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be lubed. We are aware that maintenance sometimes slips your mind, but our pros 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 might also notice whistling while the furnace is running if a floor vent isn’t secure. If you’ve checked your vents but are still hearing noise, Stephen Hurst Pack Heating and Cooling, Inc can provide support. It’s important to get loose ductwork taken care of fast, as it can create comfort issues in your residence and increase your energy costs.

6. Furnace Making a Grinding Noise

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal racket often means there’s a problem with your furnace’s blower. Shut down your furnace off promptly and contact our pros at 740-474-5940 for assistance.

When you’re noticing an uncommon noise from your furnace, Stephen Hurst Pack Heating and Cooling, Inc is here to provide assistance. Contact us at 740-474-5940 to request your furnace repair appointment today.