NuTone Fans - Ultra Silent Series: NuTone Ultra Silent™ Series Bath Fans. A bath fan needn’t call attention to itself, especially when you don’t want it to overpower the design of your bath or powder room. More important, it shouldn’t call attention to itself when it’s working. So we developed the NuTone Ultra Silent™ Series to provide our quietest bath fans yet. With an energy efficient option, it simply does its job quietly, in every sense of the word.