Clanging, Hissing and Rattling: What Six Typical Furnace Noises Mean

When your furnace is working correctly, it should provide warmth without making too much disruption. While it’s common to catch your furnace making noise as it begins running, other disruptions are indicating your furnace should get immediate professional support.

Here are some of the most common furnace noises and what they can mean. If your furnace is making an atypical noise, our friendly heating professionals are here to fix the problem with the best furnace repair in Santa Clarita, California.

1. Furnace Makes a Banging Sound

You might have a critical issue on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might signal there could be a few problems. These involve gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system turns filthy as time passes, so that’s why it’s critical to schedule yearly furnace maintenance with Verona HVAC. One of the jobs our technicians perform during this appointment is clean your furnace’s burners. When this piece gets grubby, you could hear your furnace making a loud rumbling noise after ignition is delayed. The resulting gas buildup might crack your furnace’s heat exchanger, where natural gas transforms into warmth. Any cracks in it can emit carbon monoxide, which is normally vented outdoors. This dangerous gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Verona HVAC advises turning it off and contacting us at 818-306-3387. Significant natural gas in your furnace or a cracked heat exchanger are dangerous issues that should get prompt repairs.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to move hot air across your house. If the ductwork wasn’t put in properly or is getting old, it can make a lot of noise when your furnace runs. This can be the issue if your furnace makes a banging noise when it shuts off. Contact Verona HVAC at 818-306-3387 and we’ll determine the problem.

2. Furnace Making a Buzzing Noise

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

Your furnace relies on an internal transformer to work on the proper voltage. If wires or the box is loose, you may detect a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes heated or cooled air across your residence, and a capacitor, which turns on the motor. If either of these parts are failing, they will buzz when the furnace switches on.

3. Furnace Rattles

If your furnace is making a rattling noise, it could be due to something little, like an unsecure screw, or something major, like a broken part. In either case, we advise shutting your furnace off and calling our heating specialists at 818-306-3387 for assistance.

4. Furnace Squeals

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to alert you it could use some TLC. If you’ve forgotten furnace maintenance the past few years, belts could be worn down or a bearing might need to be greased. We realize that maintenance frequently slips your mind, but our professionals can get your furnace running quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s typically because of an air leak in your ductwork. You might also notice whistling while the furnace is working if a floor vent isn’t secure. If you’ve looked at your vents but are still noticing noise, Verona HVAC can assist you. It’s critical to get loose ductwork repaired without delay, since it can create comfort issues in your house and increase your energy costs.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you hear your furnace making a grinding noise. This metal-on-metal sound typically means there’s an issue with your furnace’s blower. Switch off your furnace off right away and call our pros at 818-306-3387 for support.

When you’re hearing a strange noise from your furnace, Verona HVAC is here to help. Contact us at 818-306-3387 to book your furnace repair appointment now.