Be SMART – Do more with less: Information on saving energy

Be Smart - Do more with less Be Smart - Do more with less Be Smart - Do more with less

In view of the energy crisis and the associated cost increases, higher education institutions in Germany as well as businesses and private individuals have been asked to reduce energy consumption significantly. All LUH members – both staff and students – can contribute to achieve this goal. “Be SMART – Do more with less” applies to all of us. The acronym SMART stands for “Sparen, Mitmachen, Ausschalten, Reduzieren, Tauschen” (save, contribute, switch off, reduce, replace). The Presidential Board has already implemented measures and previously provided information on these measures. The following FAQ section provides an overview as well as further information on saving energy. Please send an email to in case of any further queries, ideas or suggestions.


1. Buildings and equipment

  • 1.1 What regulations apply with regard to heating at LUH?

    Heating and ventilation systems are centrally set to summer mode during the warmer months of the year. This means that regardless of the setting on site, static radiators will not emit heat. In addition – where possible – heat is not supplied via ventilation systems.

    During the colder months of the year, heating and ventilation systems are centrally set to winter mode. When heating your office or workspace, please close any doors and make sure that radiators are not blocked by furniture. During weekends or public holidays, the heating will be lowered centrally.

  • 1.1.1 How is the temperature lowered centrally during the colder months of the year and what do I need to consider?

    Currently, LUH is mainly supplied with heat via enercity's district heating network. The heating is controlled centrally via the building management system. Flow temperatures are controlled via optimised heating curves and depending on current outdoor temperatures. Scheduled night setbacks too are initiated centrally, via the building management system. During the warmer months of the year, static radiators are turned off centrally (summer mode).

    To maintain the specified maximum room temperature in winter mode, all radiator thermostats must be in position “3”. Otherwise, adjacent rooms may not be supplied with sufficient heat.

    If you prefer cooler temperatures, you are free to choose between positions 0-3 of the radiator thermostat while in the office.

    In unoccupied rooms (during weekends or vacations), radiator thermostats must be in position “2” in order to maintain the required minimum temperature within buildings.

    Information on radiator thermostat positions:
    Position “2” (position “3”): If the room temperature reaches approximately 16 °C (19 °C), the thermostat prevents the inflow of new heated water, therefore saving energy.

    Thermal loads in the room (people, machinery, etc.) as well as solar irradiation also contribute towards heating the room.

  • 1.2. What regulations and measures apply with regard to air-conditioning at LUH?

    Offices are not air-conditioned. The use of ventilators in offices is permitted.

    If necessary, laboratories and lecture halls are air-conditioned via central ventilation systems.

  • 1.3 How do I air rooms correctly in winter?

    Tilting windows over an extended period of time during the heating period considerably increases energy consumption. Instead, rooms should be aired thoroughly three or four times per day by opening windows completely for three to ten minutes. When airing rooms, please close the doors and turn off the heating.

  • 1.3.1 How are ventilation systems in lecture halls and seminar rooms operated correctly?

    In rooms equipped with ventilation systems, ventilation should be switched on before the start of the session.

  • 1.4 How can I determine the power consumption of appliances?

    The Green Office temporarily lends measuring devices to all LUH staff members in order to determine the power consumption of individual appliances. The devices can be plugged into sockets to measure the power consumption of electrical appliances connected to the measuring device. A set of five measuring devices can be borrowed over a period of two weeks. Contact information:

  • 1.5 What regulations apply with regard to exterior lighting?

    The Buildings Management Department assesses which exterior lights can be switched off without causing security issues. In case of any issues regarding exterior lighting, please send an email to

  • 1.5.1 Can the lighting in my office be adapted to LEDs?

    In offices and workspaces at LUH, expenses for replacing the lighting in relation to savings must be assessed individually. Please note that we are not in a position to accommodate requests regarding the replacement of lighting in individual offices since this involves a disproportionate effort and rarely results in reasonable amortisation. Instead, please consider replacing the lighting in larger areas, such as an entire corridor or the entire institute. Requests may be submitted by sending an email to Due to the large number of enquiries, delays may arise. Thank you for your patience.

  • 1.6 Where can I report malfunctioning equipment, such as radiators or devices?

    Malfunctioning radiators and other faulty devices at LUH can be reported by calling +49 511 762 - 4440. Due to the large number of enquiries, delays may arise. Thank you for your patience.

2. Working at LUH

3. Teaching and learning

4. Research

Contact details

Queries, ideas, suggestions
Queries, ideas, suggestions
Report malfunctions
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