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Facility

Maintenance on ventilation in BE-wing – Wednesday 12 November

11 November 2025

On Wednesday 12 November, from 07:00 hrs, essential maintenance will be carried out on one of the air handling units in the Gorlaeus Building. During this work, the ventilation system in the BE-wing will be temporarily switched off.

Where will this be noticeable?

The ventilation will not be working in:

  • the offices in the BE-wing on the 1st to 4th floors
  • the lecture rooms on the ground floor of the BE-wing
  • the lecture halls BM.1.23, BM.1.26 and BM.1.33

What can you do?

As there will be no supply of fresh air, the CO₂ levels in the rooms may rise. Please open a door or window to improve ventilation.

Do you have a workspace in the BE-wing? Working from home that day is also a good option.

When will everything be back to normal?

The maintenance work is expected to be completed by 15:00 hrs, after which the ventilation system will be restarted.

Questions

If you have any questions, please contact the Service Desk at servicedesk@science.leidenuniv.nl.

We apologise for the inconvenience and thank you for your understanding.

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