On Sat, 18 Feb 2017 16:14:05 GMT
Tbu62 m wrote:

replying to norminn, Tbu62 wrote:
I have the same thing in 2 different homes. A very subtle 60 Hertz
hum that drives me crazy. It's noticeable everywhere inside both
houses. I strongly suspect the structures are resonating the
vibrations from the surrounding electrical grid. (why not, flowing
energy creates resonance in the wires and pipes)....


Hummers are good!~