Energy efficient - Up to 20.0 SEER and up to 11.0 HSPF Revamped controls platform, featuring 2 communication (UART) ports Service monitoring menu through UTY-RNRUZ5 Indoor unit with HCRC (High Corrosion Resistant Copper) coils High voltage electronic components are coated with silicon to prevent damage Compact outdoor unit and extended line set lengths Washable filter factory provided with IDU Whisper-quiet operation Compatible with 2-wire wired remote controllers