When your furnace is running like it should, it should deliver warmth without creating too much noise. While it’s common to catch your furnace making noise as it begins running, other sounds are signaling your furnace needs immediate professional help.

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

1. Furnace Making a Banging Noise

You might have an urgent situation 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 involve gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system turns dirty over the years, so that’s why it’s important to book annual furnace maintenance with Enertek Air Conditioning & Heating. One of the things our technicians do during this work is clean your furnace’s burners. When this component gets grubby, you could hear your furnace making a loud rumbling noise if ignition is delayed. The following gas buildup might break your furnace’s heat exchanger, where natural gas turns into warm air. Any cracks in it can leak carbon monoxide, which is ordinarily vented outdoors. This hazardous gas can be fatal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Enertek Air Conditioning & Heating advises turning it off and contacting us at (818) 727-9993. Significant natural gas in your furnace or a ruptured heat exchanger are hazardous issues that necessitate immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace relies on ductwork to deliver warm air throughout your house. If the ductwork wasn’t designed right or is getting old, it can be loud when your furnace runs. This might be the issue if your furnace makes a banging noise when it shuts off. Call Enertek Air Conditioning & Heating at (818) 727-9993 and we’ll figure out the problem.

2. Furnace Buzzes Constantly

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound often is telling you 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 isn’t tight enough, you might detect a low humming noise in the furnace when off. Your furnace also works with a blower motor, which distributes hot or cold air around your house, and a capacitor, which turns on the motor. If either of these pieces are failing, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be related to something minor, like a loose screw, or something critical, like a broken component. In either case, we advise shutting your furnace off and calling our heating pros at (818) 727-9993 for help.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to tell you it requires some TLC. If you’ve neglected furnace maintenance recently, belts could be worn out or a bearing may need to be greased. We are aware that maintenance frequently 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 noticing your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You might 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 taken care of without delay, since it can make comfort problems in your residence and drive up your heating costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal sound typically means there’s a problem with your furnace’s blower. Switch off your furnace off right away and contact our professionals at (818) 727-9993 for support.

When you’re noticing a weird noise from your furnace, Enertek Air Conditioning & Heating is available to provide assistance. Contact us at (818) 727-9993 to schedule your furnace repair appointment today.