The 208-230V version of a 12000-BTU heat pump that keeps producing heat down to minus 15 degrees Fahrenheit, where most units in this class fall back on a resistance heater. A built-in chassis electrical heating system is what carries it that far, and the full operating envelope runs from minus 15 to 126 degrees. On a dedicated 208-230V circuit the unit reaches 24 SEER2 with HSPF2 10, among the highest efficiency ratings available at 12000 BTU, and it is certified to Energy Star, ETL and AHRI standards. Inverter technology is the mechanism, holding compressor output steady rather than cycling, which the source rates at roughly 30 percent lower running cost than a conventional air conditioner and which also keeps operation stable and silent. Control is handled three ways: a free app for remote operation, Alexa for voice, and a remote that switches the temperature display between Fahrenheit and Celsius. Seven modes cover the year and 4 fan speeds run low, mid, high and turbo, with airflow adjustable up and down as well as left and right. A screen off function and 24-hour timer suit overnight running. High-temperature self cleaning runs condensation, frost melting and sterilisation, backed by removable washable filters. The system uses R32, covers up to 750 sq ft, moves 406 CFM, clears 51 pints a day at 22 to 43 dB, and ships in 2 cartons with a full connection kit.