When your furnace is working properly, it should deliver warm air without generating too much noise. While it’s normal to catch your furnace making noise as it turns on, other disruptions are showing your furnace requires immediate professional support.

Here are some of the most common 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 Pacheco, California.

1. Furnace Making a Banging Noise

You could have a serious situation on your hands if you’re hearing your furnace making a banging noise. If your furnace is making a knocking noise, it might mean there could be a few problems. These range from gas increasing in your furnace or a ductwork issue.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy over the years, so that’s why it’s important to set routine furnace maintenance with Clean Air HVAC. One of the things our techs do during this work is clean your furnace’s burners. When this component gets grimy, you may hear your furnace making a loud rumbling noise after ignition is delayed. The following gas buildup may crack your furnace’s heat exchanger, where natural gas transforms into warm air. Any fractures in it can leak carbon monoxide, which is normally emitted away from your home. This hazardous gas can be fatal in large concentrations.

If you’re aware of banging or knocking sounds coming from your furnace, Clean Air HVAC advises turning it off and contacting us at 925-233-6238. Significant natural gas in your furnace or a fractured heat exchanger are critical issues that necessitate fast service.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move warm air throughout your residence. If the ductwork wasn’t installed right or is getting old, it can be noisy when your furnace is on. This can be the case if your furnace makes a banging noise when it shuts off. Call Clean Air HVAC at 925-233-6238 and we’ll figure out the problem.

2. Furnace Makes a Buzzing Sound

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound typically indicates an electrical problem, 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 isn’t tight enough, you could notice a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves warm or cold air across your house, and a capacitor, which triggers the motor. If either of these pieces are fading, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be related to something small, like an unfastened screw, or something major, like a broken component. In either case, we urge you to shut your furnace off and getting in touch with our heating pros at 925-233-6238 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s going, it’s making an effort to tell you it could use some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn down or a bearing may need to be greased. We realize that maintenance sometimes slips your mind, but our technicians can get your furnace heating quietly again rapidly.

5. Furnace Whistles

When you’re hearing your furnace making a whistling noise, it’s frequently due to an air leak in your ductwork. You might also be aware of whistling while the furnace is working if a floor vent isn’t tight. If you’ve looked at your vents but are still noticing whistling, Clean Air HVAC can assist you. It’s essential to get loose ductwork fixed quickly, since it can result in comfort problems in your house and increase your energy expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal sound often means there’s trouble with your furnace’s blower. Switch off your furnace off promptly and reach our professionals at 925-233-6238 for help.

When you’re noticing an atypical noise from your furnace, Clean Air HVAC is here to support you. Contact us at 925-233-6238 to book your furnace repair appointment now.