When your furnace is working properly, it should deliver warmth without making too much disruption. While it’s normal to notice your furnace making noise as it turns on, other sounds are showing your furnace requires immediate professional help.

Here are some of the most common furnace noises and what they can be signaling. If your furnace is making a strange noise, our friendly heating specialists are here to help with the best furnace repair in Neptune City, New Jersey.

1. Furnace Makes Banging or Knocking Sounds

You might have an urgent problem on your hands if you’re detecting your furnace making a banging noise. If your furnace is making a knocking noise, it may signal there could be a couple of problems. These involve gas building up in your furnace or a ductwork problem.

Banging Sounds Coming from Your Furnace

Your heating system gets filthy as time passes, so that’s why it’s essential to set yearly furnace maintenance with Aggressive Mechanical. One of the jobs our professionals do during this appointment is clean your furnace’s burners. When this piece gets dirty, you could hear your furnace making a loud rumbling noise when ignition takes more time. The subsequent gas buildup can fracture your furnace’s heat exchanger, where natural gas turns into heat. Any cracks in it can leak carbon monoxide, which is normally emitted away from your home. This dangerous gas can be lethal in large concentrations.

If you’re noticing banging or knocking sounds coming from your furnace, Aggressive Mechanical recommends turning it off and contacting us at 732-502-9300. Too much natural gas in your furnace or a ruptured heat exchanger are critical issues that should get immediate attention.

Banging Sounds Coming from Your Ductwork

Your furnace works with ductwork to deliver heated air around your house. If the ductwork wasn’t installed properly or is aging, it can be loud when your furnace is heating. This could be the issue if your furnace makes a banging noise when it shuts off. Contact Aggressive Mechanical at 732-502-9300 and we’ll pinpoint the problem.

2. Furnace Making a Buzzing Noise

If you notice 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 uses an internal transformer to run on the right voltage. If wires or the box isn’t tight enough, you may notice a low humming noise in the furnace when off. Your furnace also has a blower motor, which moves hot or cold air throughout your residence, and a capacitor, which turns on the motor. If either of these parts are fading, they will buzz when the furnace turns on.

3. Furnace Makes Rattling Sounds Like Something Is Loose

If your furnace is making a rattling noise, it could be due to something minor, like an unfastened screw, or something critical, like a broken part. In either case, we advise shutting your furnace off and calling our heating professionals at 732-502-9300 for support.

4. Furnace Making a Squealing Noise

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s attempting to tell you it requires some TLC. If you’ve neglected furnace maintenance recently, belts could be worn out or a bearing might need to be greased. We know that maintenance sometimes slips your mind, but our technicians can get your furnace heating quietly again quickly.

5. Furnace Makes a Whistling Sound Like Air Escaping

When you’re hearing your furnace making a whistling noise, it’s likely due to an air leak in your ductwork. You could 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 noise, Aggressive Mechanical can provide support. It’s important to get loose ductwork fixed quickly, since it can result in comfort problems in your residence and increase your heating bills.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you hear 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 732-502-9300 for assistance.

When you’re getting an atypical noise from your furnace, Aggressive Mechanical is ready to help. Contact us at 732-502-9300 to request your furnace repair appointment now.