The emergence of high temperature heat pump has greatly expanded the application field of heat pump, saved a large number of primary energy, with very good energy saving, environmental protection benefits. The high temperature unit adopts special technology and special refrigerant, which makes the compressor produce 75 ~85 °C hot water under the condition of keeping good working condition. The thermal efficiency is still higher than 2.5. It is suitable for the industries of flower killing, garment making, sweat steaming room, heating, electroplating and so on. It is also the first choice of industrial hot water in the future.