Automatic adjustment of the control and operation of residential environmental management systems is made based upon a time of year, a geographic location, or both. A controller receives input of the time of year or the geographic location of the residential environmental management system, or both. The controller then automatically adjusts one or more functions of the residential environmental management system based upon operational information associated with the time of year and/or geographic location. A user interface connected with the controller may be also used to select a mode of operation, input time or geographic location information, and/or adjust various parameters affecting the automatic seasonal or geographic adjustment of the residential environmental management system.