Abstract: A solar powered attic fan control system preferably includes a remote interface unit and at least one fan controller unit. The remote interface unit includes a display screen and a remote interface electronic control device. Each fan controller unit preferably includes a fan controller electronic control device and temperature, pressure, voltage and humidity sensors. The remote interface electronic control device preferably has a wireless connection to the at least one fan controller unit. A plurality of control buttons on the remote interface unit allows a user to select one of a plurality of fan controller units connected to the remote interface unit. The display screen will display temperature and relative humidity conditions in the fan controller unit location. The specific fan controller may be turned on and off by the remote interface unit. The remote interface unit preferably displays the available power level from a solar panel or battery pack.