Expandable environmental control unit

An environmental control unit comprising:

• a base section;
• a mobile section coupled to the base section for movement between a collapsed-storage position arranged substantially within the base section and an expanded-use position extending from the base section, the mobile section including a carriage coupled to the base section for movement between a stowed position corresponding to the collapsed-storage position and a deployed position corresponding to the expanded-use position, an air return coupled to the carriage for movement with the carriage relative to the base section, and an air supply coupled to the carriage opposite of the air return for movement with the carriage relative to the base section;
• and
• a temperature control system coupled to the base section and the mobile section, the temperature control system configured to selectively heat or cool air flowing through the mobile section,
• wherein movement of the carriage from the stowed position to the deployed position defines a first plenum within the base section to allow air flow through an outdoor heat exchanger coupled to the base section, and
• wherein movement of the air return from a retracted position to an extended position relative to the carriage defines a second plenum and movement of the air supply from a flattened position to an erected position relative to the carriage defines a third plenum to allow air flow through an indoor heat exchanger coupled to the mobile section.