When your furnace is running correctly, it should deliver warm air without generating too much noise. While it’s common to notice your furnace making noise as it turns on, other sounds are signaling your furnace requires immediate professional support.
Here are some of the most common furnace noises and what they could mean. If your furnace is making an odd noise, our friendly heating pros are here to assist with the best furnace repair in McKinney and Frisco, Texas.
1. Furnace Makes a Banging Sound
You might 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 may mean there could be a few problems. These include gas building up in your furnace or a ductwork situation.
Banging Sounds Coming from Your Furnace
Your heating system turns dirty over the years, so that’s why it’s essential to book seasonal furnace maintenance with Bell Mechanical Services. One of the jobs our technicians perform during this appointment is clean your furnace’s burners. When this part gets grimy, you might hear your furnace making a loud rumbling noise after ignition takes longer than normal. The subsequent gas buildup might crack your furnace’s heat exchanger, where natural gas turns into heat. Any cracks in it can leak carbon monoxide, which is ordinarily emitted outside. This dangerous gas can be deadly in large concentrations.
If you’re aware of banging or knocking sounds coming from your furnace, Bell Mechanical Services recommends turning it off and contacting us at 888-863-0560. Excessive natural gas in your furnace or a cracked heat exchanger are serious troubles that necessitate immediate service.
Banging Sounds Coming from Your Ductwork
Your furnace works with ductwork to provide hot air throughout your residence. If the ductwork wasn’t designed properly or is aging, it can be noisy when your furnace runs. This may be the problem if your furnace makes a banging noise when it shuts off. Get in touch with Bell Mechanical Services at 888-863-0560 and we’ll determine the problem.
2. Furnace Buzzes Constantly
If you notice your furnace making a buzzing noise, don’t delay calling us. A buzzing sound typically indicates an electrical issue, like with its transformer, blower motor or capacitor.
Your furnace depends on an internal transformer to work on the right voltage. If wires or the box needs to be tightened, you might notice a low humming noise in the furnace when off. Your furnace also uses a blower motor, which distributes hot or cooled air around your residence, and a capacitor, which triggers the motor. If either of these components are fading, 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 related to something small, like an unfastened screw, or something serious, like a broken part. In either case, we urge you to shut your furnace off and calling our heating pros at 888-863-0560 for support.
4. Furnace Making a Squealing Noise
If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to tell you it needs some TLC. If you’ve skipped furnace maintenance the last couple of years, belts could be worn down or a bearing may need to be lubricated. We are aware that maintenance often slips your mind, but our professionals can get your furnace operating 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 may also notice whistling while the furnace is on if a floor vent isn’t tight. If you’ve checked your vents but are still noticing whistling, Bell Mechanical Services can provide support. It’s critical to get loose ductwork repaired fast, since it can make comfort issues in your residence and inflate your utility bills.
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 typically means there’s an issue with your furnace’s blower. Switch off your furnace off right away and reach us at 888-863-0560 for help.
When you’re getting an atypical noise from your furnace, Bell Mechanical Services is ready to support you. Contact us at 888-863-0560 to book your furnace repair appointment today.