The DeltaT destratification fan controllers continuously and mix the air to balance temperatures and increase occupant comfort. Using an autotransformer to eliminate the hum often associated with TRIAC-type controls, the DeltaT line allows for six modes of quiet speed control. The controllers are simple to configure and install, with no software needed. This enables building owners and facility managers to monitor their Airius fan system, reduce their energy consumption and improve the comfort of their buildings.