Aspen Systems has completed the development and military qualification of ECU-Chill™, a ruggedized refrigeration-based environmental control unit (ECU) for cooling electronics in mobile applications. ECU-Chill™ maintains sealed electronics enclosures at or below ambient temperatures, enabling Commercial-Off-The-Shelf (COTS) electronics to be safely and effectively used for computing and communications in extremely hot or cold environments. The system was specifically designed to meet the requirements for a transit case mounted ECU with enough cooling power to keep COTS electronics at or below design temperatures while in a portable rack mount transit case in the CENTCOM AOR.