When your furnace is working properly, it should deliver warm air without making too much disruption. While it’s common to notice your furnace making noise as it begins running, other disruptions are signaling your furnace needs immediate professional support.

Here are some of the most reported furnace noises and what they might be indicating. If your furnace is making a weird noise, our friendly heating specialists are here to fix the problem with the best furnace repair in Wilmington, Delaware.

1. Furnace Makes a Banging Sound

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

Banging Sounds Coming from Your Furnace

Your heating system gets grimy as time passes, so that’s why it’s essential to set annual furnace maintenance with Brandywine Heating & Air. One of the jobs our techs do during this service is clean your furnace’s burners. When this component gets dirty, you could hear your furnace making a loud rumbling noise after ignition is delayed. The ensuing gas buildup might crack your furnace’s heat exchanger, where natural gas changes into warmth. Any breaks in it can leak carbon monoxide, which is regularly emitted away from your home. This hazardous gas can be deadly in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Brandywine Heating & Air recommends turning it off and contacting us at 302-261-3596. Too much natural gas in your furnace or a ruptured heat exchanger are hazardous troubles that require fast repairs.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to deliver warm air throughout your house. If the ductwork wasn’t installed properly or is getting old, it can be noisy when your furnace is on. This might be the issue if your furnace makes a banging noise when it shuts off. Get in touch with Brandywine Heating & Air at 302-261-3596 and we’ll pinpoint the problem.

2. Furnace Makes a Buzzing Sound

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

Your furnace uses an internal transformer to operate on the right voltage. If wires or the box needs to be tightened, you could notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves warm or chilly air across your residence, and a capacitor, which turns on the motor. If either of these pieces are fading, they will buzz when the furnace turns on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it may be related to something minor, like an unfastened screw, or something serious, like a broken piece. In either case, we urge you to shut your furnace off and getting in touch with our heating professionals at 302-261-3596 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s making an effort to alert you it requires some TLC. If you’ve forgotten furnace maintenance recently, belts could be worn out or a bearing might need to be greased. We know that maintenance frequently slips your mind, but our professionals can get your furnace heating quietly again rapidly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re detecting your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You might also notice whistling while the furnace is on if a floor vent is loose. If you’ve looked at your vents but are still hearing sound, Brandywine Heating & Air can assist you. It’s important to get loose ductwork fixed without delay, since it can create comfort problems in your house and drive up your gas expenses.

6. Furnace Makes a Loud, Unpleasant Grinding Noise

It’s not a positive sign if you notice your furnace making a grinding noise. This metal-on-metal noise usually means there’s an issue with your furnace’s blower. Switch off your furnace off immediately and contact our professionals at 302-261-3596 for help.

When you’re hearing a weird noise from your furnace, Brandywine Heating & Air is ready to provide assistance. Contact us at 302-261-3596 to request your furnace repair appointment right away.