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The g-box. Profitable natural gas CHP plant, 20 kW to 50 kW.

It is supplied as a compact, ready-for-connection module. The control cabinet is designed as a separate unit on the module. All control and regulation functions as well as operating elements are integrated into it. Modular assembly facilitates insertion and installation. The g-box not only works highly efficiently, but thanks to a completely enclosed sound cap, it is also very quiet and therefore also suitable for noise-sensitive areas. Thanks to calorific value utilisation, both the g-box 20 and the g-box 50 reach efficient levels of over 100 percent.

The g-box at a glance

  • Runs on natural gas or biomethane; g-box 20 also with liquid gas
  • Ready-for-connection, super-quiet compact module
  • Very economical with high thermal efficiency thanks to calorific value technology (as standard)
  • Long running times, reliable and low maintenance
  • Modular assembly allows insertion into narrow buildings
  • Completely water-cooled, no air inlet or outlet required, thus reducing installation costs
  • Energy efficiency class A++ (according to 2010/30/EU)

Typical Installations

  • Hotels
  • Senior citizen centres and hospitals
  • Schools and kindergartens
  • Shopping centres
  • Swimming pools
  • Administrative buildings
  • Housing complexes


Technical data

Type Output Efficiency level  
  electrical thermal electrical thermal overall
g-box 20 20 kW 44 kW 32,0 % 70,4 % 102,4 %
g-box 50 50 kW 100 kW 34,5 % 68,5 % 103,0 %
g-box 50 plus
50 kW 102 kW 34,5 % 70,1 % 104,6 %