whole house fan devices hubitat wholehouse fan control switch bws2 wholehouse fan control switch bws2 wholehouse fan control switch bws2 whole house fan 2 0 dashed yellow line three sd whole house fan projects wholehouse fan control switch bws2 12 hour timer whole house fan wall switch timer for qa deluxe fans quiet cool whole house fan how to air vent two sd wall switch 15 whole house fan devices hubitat