When your furnace is running correctly, it should give warmth without making too much disruption. While it’s normal to hear your furnace making noise as it begins running, other sounds are indicating your furnace requires immediate professional assistance.

Here are some of the most common furnace noises and what they can mean. If your furnace is making a strange noise, our friendly heating pros are here to help with the best furnace repair in Erie, Pennsylvania.

1. Furnace Makes a Banging Sound

You might have a critical problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be several problems. These involve gas increasing in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy over time, so that’s why it’s important to book annual furnace maintenance with Patterson & Stirling. One of the things our professionals perform during this work is clean your furnace’s burners. When this piece gets grimy, you might hear your furnace making a loud rumbling noise if ignition is delayed. The ensuing gas buildup can crack your furnace’s heat exchanger, where natural gas changes into heat. Any cracks in it can discharge carbon monoxide, which is regularly released outside. This dangerous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Patterson & Stirling recommends turning it off and reaching us at 814-308-0416. Too much natural gas in your furnace or a broken heat exchanger are critical problems that should get immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move warm air around your residence. If the ductwork wasn’t put in right or is getting old, it can make a lot of noise when your furnace is heating. This may be the issue if your furnace makes a banging noise when it shuts off. Contact Patterson & Stirling at 814-308-0416 and we’ll figure out the problem.

2. Furnace Making a Buzzing Noise

If you observe your furnace making a buzzing noise, don’t hesitate to call us. A buzzing sound usually is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to run on the proper voltage. If wires or the box isn’t tight enough, you may hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes warm or chilly air throughout your space, and a capacitor, which triggers the motor. If either of these parts are failing, they will buzz when the furnace starts.

3. Furnace Rattles

If your furnace is making a rattling noise, it may be the result of something small, like an unsecure screw, or something serious, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 814-308-0416 for assistance.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s attempting to get your attention it requires some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn down or a bearing may need to be lubed. We realize that maintenance frequently slips your mind, but our techs can get your furnace operating quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re noticing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You may also notice whistling while the furnace is running if a floor vent isn’t secure. If you’ve looked at your vents but are still noticing noise, Patterson & Stirling can provide support. It’s essential to get loose ductwork fixed quickly, since it can result in comfort issues in your home and drive up your gas expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not an encouraging sign if you detect your furnace making a grinding noise. This metal-on-metal noise frequently means there’s a problem with your furnace’s blower. Turn off your furnace off instantly and call our professionals at 814-308-0416 for support.

When you’re hearing an atypical noise from your furnace, Patterson & Stirling is ready to help. Contact us at 814-308-0416 to schedule your furnace repair appointment right away.