Enjoy all-season comfort with this 9000 BTU energy efficient inverter split ac.Built with a 20 SEER2 energy-efficient inverter system, this mini split air conditioner and heater helps reduce energy use while maintaining steady temperatures. Reliable performance supports heating in cold climates down to -4℉ with chassis electrical heating, and cooling in hot conditions up to 127℉. You can use the mobile app, voice control, or the included remote to adjust temperature, modes, fan speed, and schedules from across the room or while you're away. There are 7 operating modes and 8 fan speeds for you to choose from. The low-noise operation down to 28 dB makes it ideal for nighttime use. Besides, the self-clean function and washable filters allow for easier maintenance.