Maybe you can help me out. My wife and son hear a strange noise (I have high frequency hearing loss, so I don’t hear it). It is a high pitched sound that has 2 tones going back and fourth… almost like a fax machine sound. It only started last week…. Apparently it is in several rooms upstairs and one side of the house downstairs. My wife also says that she can hear it on that same side of the house but outside. It is more prominent at night (but I think that is just because it is quieter then).
We have unplugged the electric, but to no avail… and there is no way to find the source (ie the loudest). Can anyone give me any suggestions, thoughts or ideas?!?!?