6 Noises from Your Heating System You Shouldn’t Ignore

Some people ignore the check engine light in their car or the recommended updates for their computer, but when it comes to their home’s heating system, there are noises they should never ignore.

Here’s a guide to common sounds your furnace might make and what you need to do about them.

1. Banging or Clanging Sounds

Loud banging or clanging noises could be due to loose or broken components. This sound might indicate that parts are hitting each other, which can lead to further damage if not addressed quickly.

2. Squealing or Screeching Noises

Squealing or screeching noises usually indicate a problem with the blower motor or a worn-out belt.

If the blower struggles to operate, it may overheat, leading to potential breakdowns. Contact an HVAC technician to inspect your blower motor and belt.

3. Hissing Sounds

Hissing noises can indicate a serious issue, often related to a gas leak or steam escaping from a pipe.

If you smell gas or hear a hissing sound, turn off the furnace and immediately leave the house. Call your gas company to shut off your gas supply, then call a qualified technician to assess the situation.

4. Clicking Noises

While some clicking is normal, like when your system turns on, repeated clicking or a constant clicking sound can indicate a malfunctioning ignition system or electrical issues. It’s best to consult a technician to diagnose the problem.

5. Popping or Cracking Sounds

Popping or cracking noises can occur when there is an issue with your heat exchanger.

While some popping or cracking noise is normal and can be caused by warm air hitting the cold metal of the ducts, loud or continued popping could signal a problem with the heat exchanger itself.

Loud popping noises should get immediate attention since it could signal a problem with your furnace.

6. Low, Continuous Humming Noises

A low, continuous hum might be normal and likely not cause for immediate concern.

A hum that gets louder could indicate a problem with the blower motor or other electrical components and needs to be looked at by a professional technician.

Book Heating Services with Len The Plumber Heating & Air

While some furnace noises are normal, others can indicate a serious issue that requires heating repair. Regular tune-ups can help uncover small problems with your HVAC system and reduce the risk of breakdowns.

If your system is making noises or you’re ready to schedule routine maintenance, contact Len The Plumber Heating and Air in the mid-Atlantic region.