When your furnace is working properly, it should deliver warm air without creating too much noise. While it’s expected to notice your furnace making noise as it starts up, other disruptions are signaling your furnace should get immediate professional support.
Here are some of the most common furnace noises and what they could be indicating. If your furnace is making a weird noise, our friendly heating pros are here to assist with the best furnace repair in Manassas, Virginia.
1. Furnace Makes a Banging Sound
You may have a serious problem 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 several 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 book annual furnace maintenance with Woody's Sudden Service. One of the things our pros complete during this work is clean your furnace’s burners. When this part gets grubby, you may hear your furnace making a loud rumbling noise after ignition takes longer than normal. The ensuing gas buildup may fracture your furnace’s heat exchanger, where natural gas turns into heat. Any fractures in it can leak carbon monoxide, which is regularly emitted outside. This dangerous gas can be fatal in large concentrations.
If you’re hearing banging or knocking sounds coming from your furnace, Woody's Sudden Service advises turning it off and contacting us at 703-278-2036. Significant natural gas in your furnace or a fractured heat exchanger are hazardous issues that require immediate repairs.
Banging Sounds Coming from Your Ductwork
Your furnace uses ductwork to provide hot air throughout your residence. If the ductwork wasn’t installed correctly 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 Woody's Sudden Service at 703-278-2036 and we’ll pinpoint the problem.
2. Furnace Makes a Buzzing Sound
If you observe your furnace making a buzzing noise, don’t delay calling us. A buzzing sound frequently means there’s an electrical issue, like with its transformer, blower motor or capacitor.
Your furnace depends on an internal transformer to run on the correct voltage. If wires or the box isn’t tight enough, you might hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes heated or chilly air across your residence, and a capacitor, which triggers the motor. If either of these components 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 may be the result of something minor, like a loose screw, or something critical, like a broken component. In either case, we advise shutting your furnace off and contacting our heating specialists at 703-278-2036 for support.
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 trying to tell you it needs some TLC. If you’ve skipped furnace maintenance the past few years, belts could be worn out or a bearing could need to be greased. We know that maintenance frequently slips your mind, but our techs can get your furnace heating quietly again rapidly.
5. Furnace Whistles
When you’re hearing your furnace making a whistling noise, it’s typically due to an air leak in your ductwork. You might also be aware of whistling while the furnace is working if a floor vent is loose. If you’ve checked your vents but are still noticing sound, Woody's Sudden Service can help. It’s important to get loose ductwork taken care of without delay, because it can make comfort problems in your house and inflate your utility bills.
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 noise often means there’s an issue with your furnace’s blower. Shut down your furnace off promptly and reach our pros at 703-278-2036 for support.
When you’re getting a weird noise from your furnace, Woody's Sudden Service is here to help. Contact us at 703-278-2036 to schedule your furnace repair appointment today.