Electrical Hum from Furnace
You gentlemen are very smart so I wanted to ask another question I have been wondering about.......
Im my furnace room, I can hear humming/buzzing from the furnace when it sits idle. The furnace is new. My sons furnace makes the same noise.
He thought it was a "low voltage transformer" making what he called "60 cycle hum" resonating with the ductwork. He thinks it is normal where I am not to sure... my old furnace at another house didnt make such a noise, or at least not that I noticed.
So my question is, from what I describe, does this hum/buzz from the furance seem normal to you? Does your furnace make such a noise when idle?