This energy-efficient mini split air conditioner features a high-power compressor and heat pump with innovative inverter technology for 25% energy savings, ETL and AHRI certified. it offers five modes (cool, fan, dry, heat, auto) plus "health" mode (negative ions, electrostatic dust removal, pm2.5 removal), automatic defrost, self-diagnosis/cleaning, ifeel mode, 24-hour timer, sleep mode, and energy-saving mode. designed for extreme weather (-4°f to 140°f) with anti-dead wind design, it delivers 50-foot airflow and 4d circulation. control via backlit lcd remote (auto-off display after 10s inactivity) or 2.0 wifi app with google home integration, featuring 0.5–24 hour timer and quiet 41 db operation.