R410A DC inverter split Duct air conditioner for cooling or heat-pump (heating) 18KBTU/24KBTU/32KBTU/36KBTU/42KBTU/60KBTU R410A DC inverter split Duct air conditioner for cooling or heat-pump (heating) 18KBTU/24KBTU/32KBTU/36KBTU/42KBTU/60KBTU Japan mitsubishi/hitachi dc inverter high technology application. Variable capacity range for different room size. High efficiency rate saving electricity cost.Cooling and heating are both comfortable without big temperature fluctuation. Better heating performance in winter -15C. Environment protected refrigerant R410A. Auto-restart function. Luxury big-screen remote controller for easy operation. Automatic self-diagnosis system for easy maintenance quick installation saving labor cost by fast coupling lineset.