When your furnace is operating like it should, it should deliver heat without creating too much noise. While it’s normal to catch your furnace making noise as it starts up, other noises are signaling your furnace should get immediate professional assistance.
Here are some of the most common furnace noises and what they can mean. If your furnace is making an odd noise, our friendly heating pros are here to help with the best furnace repair in Arlington, Washington.
1. Furnace Makes a Banging Sound
You could have an urgent situation on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may mean there could be a few problems. These involve gas accumulating in your furnace or a ductwork issue.
Banging Sounds Coming from Your Furnace
Your heating system becomes grimy as time passes, so that’s why it’s important to book annual furnace maintenance with Service Max Heating & Air Conditioning. One of the jobs our professionals complete during this service is clean your furnace’s burners. When this component gets grubby, you may hear your furnace making a loud rumbling noise after ignition is delayed. The resulting gas buildup may fracture your furnace’s heat exchanger, where natural gas turns into warm air. Any breaks in it can emit carbon monoxide, which is ordinarily emitted away from your home. This hazardous gas can be lethal in large concentrations.
If you’re noticing banging or knocking sounds coming from your furnace, Service Max Heating & Air Conditioning advises turning it off and reaching us at 360-255-5857. Excessive natural gas in your furnace or a cracked heat exchanger are dangerous issues that should get fast repairs.
Banging Sounds Coming from Your Ductwork
Your furnace works with ductwork to move warm air around your home. If the ductwork wasn’t put in right or is aging, it can be noisy when your furnace is on. This may be the problem if your furnace makes a banging noise when it shuts off. Contact Service Max Heating & Air Conditioning at 360-255-5857 and we’ll figure out the problem.
2. Furnace Makes a Buzzing Sound
If you hear your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically means there’s an electrical issue, like with its transformer, blower motor or capacitor.
Your furnace uses an internal transformer to run on the correct voltage. If wires or the box is loose, you might hear a low humming noise in the furnace when off. Your furnace also works with a blower motor, which moves hot or chilly air throughout your space, and a capacitor, which triggers the motor. If either of these pieces are failing, they will buzz when the furnace switches on.
3. Furnace Makes Rattling Sounds Like Something Is Loose
If your furnace is making a rattling noise, it can be the result of something little, like a loose screw, or something serious, like a broken piece. In either case, we urge you to shut your furnace off and calling our heating specialists at 360-255-5857 for help.
4. Furnace Making a Squealing Noise
If your furnace makes a high-pitched noise, like squealing, when it’s heating, it’s making an effort to alert you it needs some TLC. If you’ve neglected furnace maintenance recently, belts could be worn out or a bearing could need to be lubed. We are aware that maintenance often slips your mind, but our professionals can get your furnace operating quietly again fast.
5. Furnace Whistles
When you’re noticing your furnace making a whistling noise, it’s typically the result of an air leak in your ductwork. You could also notice whistling while the furnace is operating if a floor vent isn’t tight. If you’ve examined your vents but are still sensing noise, Service Max Heating & Air Conditioning can provide support. It’s critical to get loose ductwork fixed quickly, as it can result in comfort issues in your house and drive up your energy bills.
6. Furnace Making a Grinding Noise
It’s not an encouraging sign if you notice your furnace making a grinding noise. This metal-on-metal noise typically means there’s trouble with your furnace’s blower. Shut down your furnace off instantly and contact our professionals at 360-255-5857 for support.
When you’re getting an atypical noise from your furnace, Service Max Heating & Air Conditioning is available to support you. Contact us at 360-255-5857 to book your furnace repair appointment right away.