5 Common Heating System Noises and What They Mean

Under normal operation, heating systems emit a steady and continuous hum. Sometimes, however, it may make noises that could indicate problems which shouldn’t be ignored. Amber Air Conditioning shares a list of common heating system noises and what they mean.

Creaking and Popping – This usually happens when you’re starting up your heating system for the first time of the year. The temperature differences as the heating system starts up cause expansion and contraction in the pipes, resulting in creaking and popping sounds. As the temperatures normalize, these sounds should stop. On the other hand, persistent creaking and popping should be inspected by a heating and air conditioning professional.

Buzzing – This is common with fuel-based heating systems. There are many reasons your heating system would start buzzing, and depending on the source, some of them can indicate a problem. For instance, if the control unit is buzzing, it could mean that the voltage transformer is failing. If it’s coming from the blower, then the fan motor may need repairs. Some buzzing may also come from the mounting brackets if the unit’s improperly mounted.

Loud Bang – If a furnace or boiler makes a loud bang upon starting up, it means there may be unburned fuel left in the oil pump. This happens when the furnace wasn’t shut down properly the last time it was used. Smoke and soot could also follow the bang. If this happens, turn off the furnace or boiler and call for immediate repairs.

Rumbling – A rumbling sound during startup is normal if the motor hasn’t been started for a long time, and shouldn’t last for more than a few seconds. A persistent rumbling sound could mean a problem with the motor, which should be checked by a heating and air conditioning professional.

Shrieking or Grinding – A shrieking or grinding sound usually means a moving part lacks lubrication, or a fixed part is being dragged by a moving part. Bearing failure is the most common cause, but sometimes parts may come loose and get lodged in the blower motor.

Troubleshoot Your Heating System With Amber Air Conditioning Inc.

To learn more about heating and air conditioning troubleshooting, call Amber Air Conditioning Inc. today at (951) 674-6974. You can also fill out our contact form to schedule an appointment. We serve Temecula and surrounding areas.