The heat and AC at 19 public schools in Grand Rapids, MI is run off of a 30 year old Commodore Amiga, according to a story from WOOD TV 8. The computer was purchased with money from an energy bond in the 1980's, replacing a refrigerator sized computer at the time. The computer system turns the heat and air conditioners on and off for 19 buildings and monitors the temperature. A high schooler programmed it, and whenever the district has a problem, they go back to that same former student.
Get the full story at woodtv.com