If you have an older furnace you’ve likely experienced a range of noises over time, especially as the furnace nears the end of it's lifespan. However, most newer gas furnaces are designed to run very quietly.
Here are some of the sounds you may hear from your heating system and what they could indicate:
If you hear a screeching noise coming from your furnace, it could be a problem with the motor, such as a worn bearing.
Pinging and Popping
Pinging or popping sounds often happen when the air ducts expand and contract and are usually nothing to worry about.
Vibrating or Whining noises
This can indicate a serious problem with the furnace, such as a loose motor mount, that you should have a technician check as soon as possible.
When the furnace shuts down the hot metal parts will often make a crackling sound as they cool down.
Loud booming sounds may come from air ducts as they expand and contract in very cold weather, especially when a basement is unheated. It can also indicate the furnace has dirty burners that should be serviced by a heating technician.
If these sounds are accompanied by a blower that is turning on and off more frequently or is blowing cool air, it may be time to call MR Plumbing to inspect the unit.