An HVAC controller, a method determining a location of a HVAC unit with respect to a site where the HVAC unit is installed and a HVAC system are disclosed herein. In one embodiment, the HVAC controller includes: (1) an interface configured to receive location data indicating a position of said HVAC unit with respect to the earth, (2) a memory coupled to said interface and configured to store said location data and a processor configured to retrieve said location data from said memory, wherein said retrieved location data is employed to determine a location of said HVAC unit with respect to a site where said HVAC unit is installed.