When your furnace is running correctly, it should deliver heat without creating too much sound. While it’s expected to notice your furnace making noise as it begins running, other disruptions are signaling your furnace should get immediate professional help.

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

1. Furnace Makes Banging or Knocking Sounds

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

Banging Sounds Coming from Your Furnace

Your heating system becomes filthy as time passes, so that’s why it’s essential to set yearly furnace maintenance with Enertek Air Conditioning & Heating. One of the tasks our pros do during this work is clean your furnace’s burners. When this component gets dirty, you may hear your furnace making a loud rumbling noise if ignition is delayed. The subsequent gas buildup might fracture your furnace’s heat exchanger, where natural gas turns into warmth. Any fractures in it can leak carbon monoxide, which is ordinarily released outdoors. This dangerous gas can be deadly in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Enertek Air Conditioning & Heating urges you to turn it off and calling us at (818) 727-9993. Too much natural gas in your furnace or a broken heat exchanger are critical problems that should get fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to provide heated air throughout your residence. If the ductwork wasn’t designed properly or is getting old, it can be loud when your furnace is on. This may be the problem if your furnace makes a banging noise when it shuts off. Contact Enertek Air Conditioning & Heating at (818) 727-9993 and we’ll determine 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 usually means there’s an electrical situation, like with its transformer, blower motor or capacitor.

Your furnace depends on an internal transformer to run on the correct voltage. If wires or the box isn’t tight enough, you might detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes hot or chilly air around your space, and a capacitor, which turns on the motor. If either of these parts are fading, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it can be due to something minor, like an unsecure screw, or something critical, like a broken piece. In either case, we advise shutting your furnace off and getting in touch with our heating specialists at (818) 727-9993 for support.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s trying to alert you it could use some TLC. If you’ve neglected furnace maintenance the last couple of years, belts could be worn out or a bearing might need to be lubricated. We realize that maintenance often slips your mind, but our techs can get your furnace operating quietly again fast.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You could also be aware of whistling while the furnace is operating if a floor vent isn’t tight. If you’ve looked at your vents but are still sensing whistling, Enertek Air Conditioning & Heating can assist you. It’s important to get loose ductwork repaired quickly, as it can result in comfort troubles in your home and inflate your gas expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you hear your furnace making a grinding noise. This metal-on-metal noise typically means there’s an issue with your furnace’s blower. Switch off your furnace off promptly and contact our professionals at (818) 727-9993 for support.

When you’re hearing 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 right away.