Of course, DH has to have the windows open. He's always hot no matter what the temperature is. If I ask him to close the windows he gets mad and says I'm trying to make him miserable.
I don't know if these high-pitched beeps are loud enough to hurt me. I don't have a smart phone, so I can't get a sound meter.
I thought I would be resting my ear at home for a few days, but I guess it's going to be far noiser in my own home than at work or in traffic.