A locker for unattended storage and automated access of stored goods including a locker housing having at least one environmentally controlled compartment with an environmentally controlled access opening, an air inlet duct and an air outlet duct; a door sealingly engaging the environmentally controlled access opening; an automated latch engaging the door and movable between a locked position and an unlocked position; an access control unit in communication with the automated latch; and an environmental control unit removably housed in the locker housing, the environmental control unit having duct interfaces engagable with the air inlet duct and with the air outlet duct for circulating air between the at least one environmentally controlled compartment and the environmental control unit, and the environmental control unit having an electric power connector engagable with an electric power outlet in the locker housing in communication with a source of electric power.