Airflow: Hot / Cold Inverter Wi-Fi connectivity Fire-resistant electrical box Wireless remote control High-efficiency air purification filter Environmentally friendly R32a refrigerant gas Indoor unit equipped with a fresh air intake High efficiency in energy saving and consumption Maintains room temperature stability Low operating sound level Energy-saving electricity consumption High-efficiency inverter compressor Anti-corrosion gold fins Easy to use Simple and elegant design Suitable for hotel establishments Comprehensive warranty: two years