R290 air source heat pump Highlights featureA+++ energy efficiency gradeR290 refrigerant, green environmental protection (GWP=3, ODP=0)Heating, cooling, hot water, super triple-supply, one-stop solutionsFull DC full frequency conversion technology (compressor, fan, pump)Stable operation at ambient temperatures from -25℃ to 45℃Water discharge up to 75℃High energy efficiency, low noise, noise as low as 40dBIntelligent IOT, support Wifi access, support OTA, easy online maintenance and upgrading.Intelligent APP, remote control, one step ahead of comfort.Intelligent touch controller, support up to 8 languagesSupport RS485 interface, support whole-house intelligent connection.Support smart grid technology and smart meter connection.