System and method for environmental control of an enclosure

A method of controlling a temperature within an electronic component housing comprising:

• selectively drawing unheated external air into the electronic component housing;
• selectively heating the external air that is drawn into the electronic component housing to form heated air, an extent of the heating based at least in part upon the temperature within the electronic component housing;
• drawing a selected one of the heated air and the unheated external air across at least one electronic component positioned within the electronic component housing;
• selectively exhausting from the electronic component housing a first flow of the selected one of the heated air and unheated external air that has been drawn across the at least one electronic component, a first amount of the first flow based at least in part upon the temperature within the electronic component housing;
• selectively re-circulating within the electronic component housing a second flow of the selected one of the heated air and the unheated external air that has been drawn across the at least one electronic component, a second amount of the second flow based at least in part upon the temperature within the housing;
• and
• wherein the influx, heating, exhausting, and re-circulating operate so as to cause the temperature within the electronic component housing to stay within a predetermined range.