The maglev variable frequency centrifugal heat pump unit and the maglev variable frequency centrifugal chiller unit are a new type of air-conditioning system developed using advanced maglev compressor technology. Compared with traditional units, it has high energy efficiency, average electricity saving of more than 30%, noise reduction below 80 decibels, 100% oil-free, small size, light weight, high energy density, etc. It can be widely used in air conditioning, refrigeration and heating of large buildings, such as rail transit, schools, hospitals, commercial buildings, factory workshops, etc., as well as industrial refrigeration and heating fields, such as chemical industry, papermaking, textile printing and dyeing, rubber plastics, food, pharmaceuticals, biological fermentation, etc.