When your furnace is running properly, it should provide heat without generating too much disruption. While it’s normal to hear your furnace making noise as it begins running, other disruptions are showing your furnace should get immediate professional assistance.

Here are some of the most frequent furnace noises and what they could be signaling. If your furnace is making an atypical noise, our friendly heating professionals are here to assist with the best furnace repair in Lincoln, Nebraska.

1. Furnace Making a Banging Noise

You might have a serious problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be a few problems. These range from gas building up in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets dirty as time passes, so that’s why it’s important to schedule yearly furnace maintenance with AW Heating & Air Conditioning. One of the things our pros do during this service is clean your furnace’s burners. When this piece gets grimy, you could hear your furnace making a loud rumbling noise after ignition takes longer than normal. The subsequent gas buildup may break your furnace’s heat exchanger, where natural gas transforms into warm air. Any breaks in it can discharge carbon monoxide, which is regularly emitted outside. This hazardous gas can be fatal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, AW Heating & Air Conditioning recommends turning it off and contacting us at 402-438-7992. Too much natural gas in your furnace or a broken heat exchanger are dangerous troubles that require fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver hot air around your residence. If the ductwork wasn’t put in correctly or is getting dated, it can be noisy when your furnace is on. This could be the problem if your furnace makes a banging noise when it shuts off. Call AW Heating & Air Conditioning at 402-438-7992 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace relies on an internal transformer to work on the right voltage. If wires or the box is loose, you may detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes heated or cold air around your house, and a capacitor, which starts the motor. If either of these parts are fading, they will buzz when the furnace starts.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it may be the result of something small, like an unsecure screw, or something major, like a broken piece. In either case, we urge you to shut your furnace off and calling our heating pros at 402-438-7992 for support.

4. Furnace Squeals

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 forgotten furnace maintenance recently, belts could be worn out or a bearing may need to be greased. We are aware that maintenance sometimes slips your mind, but our pros can get your furnace running quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s frequently because of an air leak in your ductwork. You might also hear whistling while the furnace is working if a floor vent isn’t tight. If you’ve looked at your vents but are still noticing noise, AW Heating & Air Conditioning can help. It’s important to get loose ductwork fixed without delay, since it can make comfort troubles in your house and drive up your energy costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you notice 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 promptly and contact us at 402-438-7992 for help.

When you’re hearing an uncommon noise from your furnace, AW Heating & Air Conditioning is available to support you. Contact us at 402-438-7992 to book your furnace repair appointment now.