I've been turning ours off in the living room for a cpl hours a night....b/c of noise level.
The setup at my wife's office is too loud for her to work so she turns the skimmer off during the day, and on when she leaves for the day. I asked a friend what he thought about this and his only concern was if the neck was drying out too much, it may take too long to efficiently produce "tasty" gak. He suggested that if the cup wasn't very full ea. day try only running for the weekends. I'm going to try it out.