Customer had an attic fan installed when roof was replaced. We installed new wiring from existing circuit by tapping out of the smoke detector in the hallway. We installed a new service switch in the attic right when you enter. We mounted the new thermostat /humidistat to the ceiling joist next to the fan and set it to the manufacturer recommended settings of 110 degrees and 85% humidity. These settings are easily changeable at the unit in the attic is ever wanted to be changed.