What are the advantages and disadvantages of magnetic levitation central air conditioning Maglev central air conditioning is a kind of central air conditioning unit which adopts magnetic levitation frequency conversion technology. It uses many advanced technologies such as magnetic levitation oil-free operation, full direct current frequency conversion technology, intelligent control, centralized control technology and so on. It has ultra-high energy saving rate and operation stability. Advantage: 1. Reliable operation, zero friction; because the compressor is driven directly by motor, no speed-increasing gear, no mechanical friction, from the source to improve the reliability of the unit and extend the service life of the unit. 2. Energy-saving, high efficiency and ultra-low operating efficiency. As one of the leading enterprises in China, Haier Maglev Central Air-conditioning can achieve a maximum energy efficiency ratio of 34.58 for part load of its magnetic suspension centrifugal unit, 13.18 for comprehensive energy efficiency ratio and 50% for energy saving. 3.30 years of super-long service life; due to the suspension operation of components, the overall mechanical friction is only 0.2% of the traditional central air-conditioning unit, and the service life of the unit is twice that of the ordinary central airconditioning unit. Its super-long service life, supplemented by high efficiency of energy saving, can greatly reduce the energy cost of energy consumption system and also shorten the investment recovery period of the leading owners. 4. Ultra-bass operation; suspension of components, friction-free operation, structural vibration close to 0, low operating noise, no need to install shock absorption parts and sound insulation room, reduce the installation and noise reduction costs of owners. 5. Low-current start-up, no impact on the power grid; Start-up current is very low, only 2A can start, without soft starter, save tens of thousands of yuan of converter equipment investment costs, while no impact on the power grid; At the same time, it does not need to apply for high-voltage power supply alone, avoid tedious approval process, save installation costs. Six.3 years warranty, maintenance without worry; because the magnetic suspension central air conditioning has realized oil-free operation, no need to change oil, can save about 300,000 yuan of the whole life cycle maintenance costs, but also save the trouble of handing over with the maintenance team. Disadvantages: Unit complexity is relatively large, the initial user investment is relatively large, single refrigeration technology (but Haier magnetic levitation has broken this situation)