This is our Honor heat pump high quality one. The working temperature range is -15~43 degrees Celsius. It adopts unique airflow design, making it quiet operation too. It makes a great performance even in low temperature with stable and high efficient operation. The honor heat pump always remain higher efficiency and performs more excellently. It has a simple control system ,12 operating modes and can be controlled through a mobile smart app. Unique Airflow Design Full Inverter Technology Ultra Silent Running High Efficiency Running Air Temp. -15°C~43°C R32 & R410A for Option Intelligent Defrosting Built-in Wi-Fi for Smart APP Control