Updated: 08.11.2026
In brief: Waiting rooms, treatment rooms and labs should be ventilated regularly without anyone climbing a ladder. Electric actuators open fanlights via push button or timer and close when it rains. Where a ventilation system is required, window actuators only supplement it.
Typical uses
- Waiting room: Burst ventilation between consulting hours by timer.
- Treatment room: Fanlight via push button, windows within reach remain manual.
- Laboratory: Ventilation requirements are set by the specialist planner; window actuators provide additional ventilation.
- Corridor and stairwell: Open fanlights centrally.
Which actuators are suitable?
For fanlights, a Chain actuator again VS-KAis usually sufficient. Where the actuator should not be visible, the concealed VS-CKA 300fits. The VS-C24-7A ventilation control unit controls up to 7 actuators with push button and Rain sensor.
What to look for?
- Do not move windows within reach automatically, see crushing point.
- Quiet actuators and short running times in treatment rooms.
- Have power-operated windows inspected regularly, see Inspection of power-operated windows.
Similar solutions: Ventilating offices and Care home and hospital. For a quote, send photos via the Project enquiry.
Frequently asked questions
Does a window actuator replace the ventilation system?
No. Where a ventilation system is required, window actuators only supplement it. For normal practice rooms they are a simple solution for regular ventilation.
Can existing practice windows be retrofitted?
Usually yes, if there is space on the frame for actuator and bracket. Photos and dimensions are enough for an initial assessment.
Technically reviewed by Dietmar Heiken, Sales, Vent Systems HDI GmbH, Hamburg – around 20 years of industry experience. Questions? Phone +49 40 50694631 or info@ventsystems.de
Last updated: 08.11.2026
