The fans use an estimated 166/117/87 watts at each power level. This isn’t much more electrical draw than a typical laptop. If you have concerns about the electrical capacity of a specific room, please contact Facilities Services at 2-1032. (10/7/21 bench test: Draw = 0.6 amp at setting 1; 0.8 amp at setting 2; 1.0 amp at setting 3).