【China · Guangzhou】April 23, 2026, two technological achievements led by GMCC, a global leading core component supplier for HVAC home appliances, namely "Key Technologies and Industrialization of Full-Band High-Efficiency Silent Compressors for Room Air Conditioners" and "Key Technologies and Industrialization of R290 Single-Cylinder Compressors", were appraised as "internationally leading" by experts organized by China National Light Industry Council. GMCC Midea continues to invest in R&D, make breakthroughs, and build a supply chain foundation for the high-quality development of the global HVAC home appliance industry with internationally and industry-leading technologies and products.
The appraisal committee is led by Academician Wang Jun from Beihang University, Academician Deng Zhongliang from Beijing University of Posts and Telecommunications, and President Liu Ting from China Household Appliance Research Institute, and consists of authoritative experts including Vice Chairman Xu Dongsheng of China Household Appliance Association, Professor Chai Jianyun from Tsinghua University, Researcher Cheng Jianhong from China National Institute of Standardization, and Professor Wang Ruixiang from Beijing University of Civil Engineering and Architecture. The expert group listened to the project report, reviewed relevant technical materials, inspected product prototypes and physical objects on site, and after inquiry and discussion, unanimously confirmed that the overall technology of the appraised projects has reached the internationally leading level.
GMCC Midea's two compressor R&D achievements appraised as "internationally leading"
GMCC Midea promotes the implementation of new national standards for air conditioners with full-band high-efficiency silent compressors
To more accurately reflect the real energy efficiency of air conditioners under variable loads, institutions such as China National Institute of Standardization are promoting innovative evaluation methods such as DAPF (Dynamic Annual Performance Factor) and refrigerant carbon emission factor (CEF). This puts forward new and higher requirements for the "heart" of air conditioners - compressors: accelerating the transition from traditional "rated operating condition high efficiency" to "full operating condition high efficiency" to better support the implementation of dynamic energy efficiency.
In the project "Key Technologies and Industrialization of Full-Band High-Efficiency Silent Compressors for Room Air Conditioners", taking the 1.5HP inverter R32 rotary compressor for household air conditioners as an example, GMCC Midea has thoroughly overcome technical pain points such as energy efficiency loss, vibration and noise, and insufficient stability of compressors under full operating conditions, especially ultra-low frequency operating conditions, through refined structural innovation design of components, R&D and application of high-performance special materials, and subversive breakthroughs in core processes such as articulation. It has successfully developed and implemented a new full-domain high-efficiency technical system, realizing full-band high-efficiency operation, extreme silent experience, and high reliability and stability of compressors.
Compared with the previous generation of high-efficiency silent compressors, the energy efficiency of the single compressor developed this time is increased by more than 3.4%, the system energy efficiency reaches above APF6.2, which is far exceeding the existing APF evaluation standard, and the system operating noise is also reduced by 4dB(A) compared with the previous generation. The overall product is at the industry's advanced level. In addition, this achievement can not only be applied in the field of high-efficiency and environmentally friendly air conditioners, but also further promoted to heat pumps, mobile air conditioners and other refrigeration-related equipment, which will effectively help the energy efficiency upgrade of the home appliance industry and provide a solid support for the full implementation of the national "Double Carbon" strategy.
GMCC Midea's two compressor R&D achievements appraised as "internationally leading"
GMCC Midea promotes large-scale commercialization of related air conditioners with innovative R290 single-cylinder compressors
With the advancement of the Kigali Amendment, the process of replacing high-GWP working fluids with low-GWP working fluids is accelerating. R290 (propane), as a natural working fluid, has been promoted in China for many years. However, in practical implementation, the unit volume cooling capacity of R290 is low, which leads to a larger displacement required for compressors using R290 under the same cooling capacity, and higher material and technical costs, which has become a key factor restricting the large-scale commercialization of R290 compressors and their air conditioners.
In the project "Key Technologies and Industrialization of R290 Single-Cylinder Compressors", GMCC Midea actively tried to break through this problem that has plagued the industry for many years. Taking the 1.5HP inverter R290 rotary compressor for household air conditioners as an example, GMCC Midea broke the dual-cylinder structure commonly used in the industry, and solved the problems of energy efficiency, reliability and noise and vibration of large-displacement single-cylinder compressors from the underlying design with the pioneering "precision simulation design with multi-physics field collaborative control", laying an industrial foundation for realizing the replacement of single-cylinder for dual-cylinder, solving the technical difficulties of R290 compressors in high energy efficiency, low noise and reliable lubrication, and finally promoting the popularization of R290 compressors and their air conditioners.
It is reported that the R290 single-cylinder compressor developed in this project is 10% shorter in height than the previous generation dual-cylinder product, but its energy efficiency is increased by 1.7%, and the system noise is reduced by 4dB(A). The product is more excellent in overall reliability, energy efficiency and noise comprehensive quality, and contributes to improving the technological competitiveness and industrialization level of China's compressor industry in the global low-GWP working fluid core component field.
