Mitsubishi is one of the premier manufacturers of mini-split heat pump systems, according to Heat Pump Pro. Mitsubishi mini-split pump systems can achieve extremely high energy efficiency and are able to operate in low temperature ranges that are challenging for many mini-split systems to handle.
Mitsubishi's ductless mini-split heat pumps can achieve seasonal energy efficiency ratings of up to 26, placing among the most efficient of mini-split designs. Part of their high efficiency comes from the use of an inverter-based compressor that can adjust its output to match heating or cooling needs. Mitsubishi mini-split heat pumps can provide continuous heat when outside temperatures are as low as 15 degrees Fahrenheit.