The short version
Key points
- Midea’s Chongqing site joined the World Economic Forum’s Lighthouse Factory list in March 2024.
- Industry 4.0 at the factory combines robotics, automated guided vehicles, artificial intelligence, sensors and digital twins.
- Midea reports production cycles have been reduced by 64%, labour productivity has increased by more than 50% and energy use per unit has fallen by 20%.
- The factory uses rooftop solar for up to 30% of its electricity, according to the video.
- Magnetic levitation chillers use magnetic fields instead of conventional mechanical bearings to support the compressor shaft.
What is a Lighthouse Factory?
TechManPat visited Midea’s chiller factory in Chongqing, China, described in the video as the world’s first Lighthouse Factory in the chiller sector. The World Economic Forum uses the Lighthouse designation for manufacturing sites applying advanced digital tools, artificial intelligence, the Internet of Things, robotics and sustainable energy practices.
The video says only about 150 factories worldwide had received the designation from a pool of approximately 100,000 factories. Midea’s Chongqing facility joined the list in March 2024, making it an example of how digital manufacturing can be applied at a large industrial site.
Industry 4.0 on the factory floor
Industry 4.0 is presented as the fourth industrial revolution, following steam power, electricity and early automation. Its focus is on cyber-physical systems, where machines share information, artificial intelligence helps optimise workflows and digital twins model production in real time.
At Midea’s factory, robots and automated guided vehicles move components around the site. The video also describes artificial intelligence being used to predict machine faults before they occur. This changes the nature of human work rather than simply removing people: employees move away from repetitive manual assembly towards robot supervision, quality control and other higher-skilled roles.
According to Midea’s reported figures, production cycles have been cut by 64%, labour productivity has risen by more than 50% and energy use per unit has fallen by 20%. Midea’s APAC general manager also said automation had increased output by more than 30% on some production lines. These figures are presented as Midea’s results rather than independent test results.
Energy efficiency and magnetic levitation chillers
The factory’s sustainability measures include rooftop solar, which the video says supplies up to 30% of the site’s electricity. Predictive maintenance and energy-optimised production are also described as ways to reduce waste and emissions during manufacturing.
One of the technologies highlighted during the tour is Midea’s magnetic levitation chiller. Traditional compressors use mechanical bearings, which can create friction, noise and wear. In Midea’s Mag Lab chillers, magnetic fields support the rotating shaft. The video says it can reach 20,000 revolutions per minute, with sensors maintaining a gap of 5 microns - approximately one-sixtieth of the thickness of a human hair.
The video states that the system can achieve an efficiency rating of up to COP 7.3, while offering quieter operation and less maintenance. It also claims magnetic levitation chillers can use 20% to 30% less energy than traditional compressors. These benefits may be relevant to buildings with long cooling runtimes, including hotels, hospitals, shopping centres and office towers.
Potential relevance to Australia
Large magnetic levitation chillers have generally been used in major buildings, but Midea is also working on smaller versions for midsized sites. The video says these compact units are intended to suit buildings such as hotels, shopping centres and office towers, including the Australian market.
Midea’s stated strategy for Australia and the wider Asia-Pacific region is to build local teams, adapt products to local standards and provide on-the-ground service. The company has also introduced elements of its Lighthouse practices at factories in Thailand and plans to certify more overseas sites.
TechManPat’s conclusion
I found the Chongqing tour an eye-opening look at where HVAC manufacturing is heading. In my view, the combination of AI, robotics and magnetic levitation shows that even a fairly mundane industry such as air conditioning is moving towards more automated, efficient and technology-driven production. The shift appears to be less about eliminating every human role and more about reducing repetitive work while increasing supervision and technical responsibilities.
This knowledge-centre summary is based on the linked TechManPat video and reflects the information available when it was published. Check current pricing, availability and policies before acting.
