When your furnace is operating like it should, it should give warmth without generating too much sound. While it’s expected to notice your furnace making noise as it turns on, other sounds are signaling your furnace needs immediate professional assistance.

Here are some of the most reported 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 The Bay Area, California.

1. Furnace Making a Banging Noise

You might have a critical issue on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it can signal there could be a couple of problems. These involve gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy as time passes, so that’s why it’s essential to book yearly furnace maintenance with Contra Costa Heating & AC. One of the jobs our technicians do during this work is clean your furnace’s burners. When this component gets grimy, you might hear your furnace making a loud rumbling noise if ignition takes more time. The resulting gas buildup may fracture your furnace’s heat exchanger, where natural gas changes into warmth. Any cracks in it can emit carbon monoxide, which is ordinarily released outdoors. This dangerous gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Contra Costa Heating & AC advises turning it off and reaching us at 510-343-9841. Significant natural gas in your furnace or a cracked heat exchanger are hazardous issues that should get immediate repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move heated air throughout your residence. If the ductwork wasn’t designed correctly 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 Contra Costa Heating & AC at 510-343-9841 and we’ll determine the problem.

2. Furnace Buzzes Constantly

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

Your furnace depends on an internal transformer to run on the proper voltage. If wires or the box is loose, you could hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which sends warm or cold air throughout your residence, and a capacitor, which triggers the motor. If either of these components are going out, they will buzz when the furnace starts.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it can be related to something small, like an unsecure screw, or something major, like a broken component. In either case, we urge you to shut your furnace off and calling our heating pros at 510-343-9841 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to tell you it needs some TLC. If you’ve forgotten furnace maintenance the last couple of years, belts could be worn out or a bearing could need to be greased. We know that maintenance frequently slips your mind, but our technicians can get your furnace operating quietly again quickly.

5. Furnace Making a Whistling Noise

When you’re hearing your furnace making a whistling noise, it’s likely 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 sound, Contra Costa Heating & AC can help. It’s essential to get loose ductwork fixed quickly, since it can result in comfort troubles in your residence and increase your heating expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you detect your furnace making a grinding noise. This metal-on-metal racket usually means there’s an issue with your furnace’s blower. Turn off your furnace off promptly and reach our pros at 510-343-9841 for assistance.

When you’re noticing an atypical noise from your furnace, Contra Costa Heating & AC is ready to support you. Contact us at 510-343-9841 to request your furnace repair appointment right away.