A method and apparatus for a control interface for environment control systems. An embodiment of a controller for a climate control system includes a memory to store a plurality of constraints for the climate control system and a processor to choose a current climate control activity, the current climate control activity being based at least in part on the constraints. The controller includes a user control interface to provide information to a user, the information identifying the current climate control activity of the climate control system and a constraint that influenced the choice of the current activity.