Semi-Hermetic Compressors HG Single-Stage Compressors

The HG model series consists of state-of-the-art classical suction gas-cooled compressor technology. Assurance of effective lubrication by an oil pump, application of exchangeable electrical motors, as well as manufacture of very solid and rugged compressors is ensured.

Special features:

  • Outstanding running comfort
  • Efficiency and reliability on the highest level of quality
  • Service-friendly, e.g. replaceable drive motors
  • Oil pump lubrication
  • Electronic motor protection
  • Suitable for conventional or chlorine-free HFC refrigerants!


Those compressors are efficiency optimized models. 
By technical optimizations the motor-efficiency, gas flow and efficiency of the valve system are improved.


With the Pluscom HG12P compressor GEA offers a small-capacity compressor for shops and counter installation with extremely compact dimensions, super-quiet running and absolute top quality.

GEA mexxFlow® valve plate system

More refrigerating capacity and lower power consumption – this is the motto of the mexxFlow® valve plate system, which will form the heart of several new GEA compressor generations in future. Concerning the increase in energy efficiency of semi-hermetic compressors, one focus of compressor manufacturers has always been on the valve plate system. It is necessary to release the energy, which is applied by an electric motor, efficiently to the refrigerating circuit while realizing minimal energy losses. GEA has also put its focus of continuous development of reciprocating compressors on the valve plate system – the mexxFlow® system now reflects the result of this development work.

GEA was successful in increasing the efficiency of its compressors by around 15 % thanks to a flow-optimized double ring fin construction of the valve plate in combination with a cylinder head, which is specially adapted to the valve plate. Thus, open type as well as semi-hermetic commercial GEA compressors achieve new records in terms of efficiency.


More information about the HG single-stage compressors (e.g. technical/performance data, drawings, spare part lists, operating limits) can be found in the compressor selection tool VAP via the following link: VAP compressor selection HG single-stage compressors

Video about mexxFlow® valve plate technology used in HG88e compressor