The Toshiba Carrier compact wall system has an energy-efficiency rating of up to 23 SEER for this unit and likewise as a heat pump. It has an HSPF rating of up to 10. According to the company, the product comes with numerous features, and the inside unit is whisper-quiet — as low as 26 dB. It includes a five-speed fan, wireless remote and variable-speed compressor that assists with enhanced summertime dehumidification.
Source: ACHR News (a part of news report)