When your furnace is operating correctly, it should give warm air without generating too much disruption. While it’s expected to hear your furnace making noise as it begins running, other noises are indicating your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they could be signaling. If your furnace is making a weird noise, our friendly heating pros are here to assist with the best furnace repair in Northridge, California.

1. Furnace Making a Banging Noise

You may 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 might mean there could be a couple of problems. These range from gas building up in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy over time, so that’s why it’s important to schedule routine furnace maintenance with Enertek Air Conditioning & Heating. One of the things our techs complete during this work is clean your furnace’s burners. When this component gets grubby, you may hear your furnace making a loud rumbling noise when ignition takes longer than normal. The ensuing gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into heat. Any breaks in it can emit carbon monoxide, which is normally released away from your home. This hazardous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Enertek Air Conditioning & Heating advises turning it off and calling us at (818) 727-9993. Excessive natural gas in your furnace or a ruptured heat exchanger are dangerous problems that necessitate fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to provide heated air throughout your house. If the ductwork wasn’t installed properly or is getting old, it can be noisy when your furnace is on. This might be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Enertek Air Conditioning & Heating at (818) 727-9993 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace uses 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 uses a blower motor, which distributes warm or cold air throughout your space, and a capacitor, which triggers 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 could be related to something small, like an unfastened screw, or something serious, like a broken component. In either case, we advise shutting your furnace off and getting in touch with our heating pros at (818) 727-9993 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to alert 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 may need to be greased. We know that maintenance sometimes slips your mind, but our techs can get your furnace operating quietly again rapidly.

5. Furnace Making a Whistling Noise

When you’re noticing your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You may also notice whistling while the furnace is operating if a floor vent isn’t secure. If you’ve checked your vents but are still hearing whistling, Enertek Air Conditioning & Heating can help. It’s critical to get loose ductwork repaired quickly, as it can create comfort issues in your home and inflate your heating expenses.

6. Furnace Making a Grinding Noise

It’s not a good sign if you detect your furnace making a grinding noise. This metal-on-metal noise usually means there’s an issue with your furnace’s blower. Shut down your furnace off instantly and contact us at (818) 727-9993 for assistance.

When you’re getting a strange noise from your furnace, Enertek Air Conditioning & Heating is available to support you. Contact us at (818) 727-9993 to request your furnace repair appointment now.