22·26 Operating System

Indoor comfort and efficiency thanks to intelligent software

In 22·26 buildings, individual room climates are regulated via the control of window ventilation flaps, which are adjusted based on continuous measurements of room temperature and air quality. Our intelligent software analyses and processes these measured values and triggers the automated opening or closing of the ventilation flaps as required. In this way, the 22·26 Operating System creates a perfect room climate with a constant, pleasant temperature between 22 and 26 °C.

Portrait Dominik Motzko

The 22·26 principle enables a holistic approach to the building, while our Operating System effectively orchestrates natural energy flows inside and outside the building.

Dominik Motzko, System Engineer

Measurement and data acquisition

Each room is equipped with triple sensors that monitor the temperature, CO2 concentration and relative humidity in real time. A weather station installed on the roof also records the current outdoor conditions (temperature, wind and ambient light). Based on this data, the 22·26 software ensures individualised, usage-oriented control – at all times.

Analysis and data processing

The data is processed via a facility server – a central computer – whereby the hardware requirements are limited to the sensors, weather station and central server. There is no need for expensive, complex and maintenance-prone building services, including multiple supply lines. This not only minimises the space required, but also the operating and maintenance costs throughout the entire life cycle.

The software’s control algorithm is constantly evolving through continuous monitoring, allowing the 22·26 Operating System to be directly customised in accordance with the occupants’ habits – manual ventilation and override are possible at any time. System monitoring and a return to automatic mode prevent operating errors.

Monitoring and control

The data analysis shows whether temperature-dependent or CO2-induced ventilation is necessary. If the limit values are reached, the software activates the motorised ventilation flaps. The ventilation blades then open and remain open until the room climate returns to the optimum values. This enables full monitoring and control of individual rooms as well as zone-based control.

The 22·26 app can be used to view room data, control lighting, window sashes and the backup system.

A comfortable climate all year round can only be achieved with an intelligent building control system

22·26 building – empty

The indoor temperature lags behind the outdoor temperature by several weeks and exhibits much smaller temperature fluctuations, even with extreme changes outside. The reason for this sluggish response is the high thermal storage capacity of a 22·26 building.


22·26 building – occupied, without intelligent control

Due to the heat input from people, appliances and lighting, the indoor temperatures are significantly higher. However, at times they fall below 22 ºC and rise above 26 ºC.



22·26 building – occupied, with intelligent control

Only when the smart 22·26 Operating System is used is a constant temperature of between 22 and 26 ºC maintained. Even extreme conditions are automatically equalised: during very cold weather or if the building is temporarily unoccupied, the back-up lighting is switched on. During periods of extreme heat, the night-time cooling system is activated. Rapid ventilation occurs when the CO2 levels are too high.

In use

The reliability and versatility of the 22·26 Operating System is demonstrated by the fact that the indoor temperatures and CO2 levels are always within the desired range, despite varying utilisation and room occupancy as well as fluctuating energy consumption.

Touchscreens allow room data to be viewed as well as manual control of lighting and ventilation flaps. The system also includes integrated entrance-monitoring and door-opening functions. User-friendly software was our priority to allow flexible, usage-specific settings to be configured.

Find out more about the second pillar of the method 22·26.
Do you have any questions? We look forward to answering them.
Gain insights into the various project phases – learn how 22·26 buildings are created.