When your furnace is working properly, it should provide heat without generating too much disruption. While it’s normal to catch your furnace making noise as it starts up, other noises are showing your furnace requires immediate professional help.

Here are some of the most frequent furnace noises and what they can mean. If your furnace is making a weird noise, our friendly heating specialists are here to help with the best furnace repair in Alliance, Nebraska.

1. Furnace Makes Banging or Knocking Sounds

You could have a critical problem on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it can 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 filthy over the years, so that’s why it’s essential to schedule yearly furnace maintenance with Jack's Heating, Cooling, Stoves & Fireplaces. One of the jobs our techs do during this service is clean your furnace’s burners. When this part gets dirty, you might hear your furnace making a loud rumbling noise if ignition is delayed. The ensuing gas buildup may fracture your furnace’s heat exchanger, where natural gas turns into heat. Any fractures in it can leak carbon monoxide, which is normally released outdoors. This dangerous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Jack's Heating, Cooling, Stoves & Fireplaces advises turning it off and contacting us at 308-321-4703. Significant natural gas in your furnace or a broken heat exchanger are dangerous issues that should get fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air across your house. If the ductwork wasn’t put in correctly or is aging, it can be noisy when your furnace is heating. This can be the case if your furnace makes a banging noise when it shuts off. Get in touch with Jack's Heating, Cooling, Stoves & Fireplaces at 308-321-4703 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you notice 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 run on the correct voltage. If wires or the box is loose, you might notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes hot or chilly air around your home, and a capacitor, which triggers the motor. If either of these parts are fading, 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 little, like an unfastened screw, or something critical, like a broken piece. In either case, we urge you to shut your furnace off and calling our heating professionals at 308-321-4703 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 neglected furnace maintenance the last couple of years, belts could be worn down or a bearing could need to be lubed. We realize that maintenance often slips your mind, but our pros can get your furnace heating quietly again rapidly.

5. Furnace Whistles

When you’re noticing your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You could also hear whistling while the furnace is working if a floor vent is loose. If you’ve examined your vents but are still hearing whistling, Jack's Heating, Cooling, Stoves & Fireplaces can help. It’s essential to get loose ductwork fixed quickly, because it can create comfort problems in your home and drive up your gas costs.

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 sound usually means there’s an issue with your furnace’s blower. Switch off your furnace off right away and reach our pros at 308-321-4703 for assistance.

When you’re hearing a weird noise from your furnace, Jack's Heating, Cooling, Stoves & Fireplaces is ready to help. Contact us at 308-321-4703 to request your furnace repair appointment today.