Strategic control systems
Demand-oriented operation: modern ventilation control guarantees pleasant room conditions for customers and staff at low energy consumption...
Warmth where you need it: retail properties have different temperature zones with different requirements...
Cold and heat recovery

Saving resources: our solutions use the waste heat from commercial refrigeration plants and the air-side heat recovery of conditioned room air in order to cover the heat and air conditioning demand in a market.



Pleasant indoor climate with GTM: modern food stores are usually air conditioned today...


Weather data included: since 2011, we use the control strategy Meteolink to integrate weather data into applications for refrigeration and building technology...


Economic efficiency and well-being: we provide you with best light conditions for indoor, outdoor and advertising that is cost-saving as well...


Creating transparency and realising savings potentials: the basis of any energy management is informative, condensed and cross-project data...

System integration

Think in networks, control centrally: since 1995, the Wurm Group with its subsidiary GTM, belongs to the leading providers of comprehensive system solutions for commercial refrigeration and building technology for food retailing...



Dear user,

we have updated our privacy policy to help you understand which data we collect and why. There is no change of your current settings or how your data are processed.

We have only improved explanations and transparency of our procedures.

We are making these changes as the General Data Protection Regulation (GDPR) will come into force in the European Union. This regulation is meant to harmonise the data protection laws in Europe and to clarify the rules regarding the question how companies should describe their data processing processes in a comprehensible manner.