The Trilogy™ 40 Series is a geothermal heat pump certified by the Air-Conditioning, Heating and Refrigeration Institute (AHRI) to exceed 40 EER at ground-loop conditions. The patent-pending Q-Mode™ technology produces year-round domestic hot water on demand, even when space conditioning is not required. The Trilogy 40 Q-Mode has a variable-speed fan, pump, and compressor (Trilogy technology) plus four operating modes (Q-Mode technology). It offers the latest technology to configure and diagnose the system electronically using communicating controls and sensors to the monitor every critical aspect of system operation to ensure peak performance. It is currently in limited production, with full availability scheduled for late this fall.