Building automation is set to reach a turning point in 2026
Building automation is evolving rapidly. What was once primarily aimed at enhancing comfort will, by 2026, become a key driver of energy efficiency, operational reliability and regulatory compliance. Rising energy prices, ambitious climate targets and new digital technologies are fundamentally changing expectations of HVAC systems.
Three developments are having a particularly strong combined effect here: the use of artificial intelligence, the new EU Energy Performance of Buildings Directive (EPBD), and the growing focus on retrofit solutions for existing buildings. Together, they are shifting the focus from rigid control strategies towards intelligent, adaptive operating concepts.
AI makes HVAC systems adaptive
Artificial intelligence is transforming building automation not through individual spectacular features, but through a new form of decision-making. Modern systems continuously analyse operational data, usage patterns, outdoor temperatures and historical trends. Based on this, they dynamically adjust heating, cooling and ventilation strategies.
In building management, this means one thing above all: lower energy consumption whilst maintaining or even improving comfort levels. AI recognises patterns, identifies inefficient operating conditions and can respond to deviations at an early stage. This approach is particularly valuable in existing buildings, where systems are often oversized or operated inefficiently.
At the same time, experience shows that AI is no substitute for traditional control engineering. Successful projects combine tried-and-tested DDC structures with data-driven optimisation algorithms. This ensures that operations remain transparent, traceable and compliant with regulations.
EPBD: Building automation becomes mandatory
With the Energy Performance of Buildings Directive (EPBD), the EU is significantly tightening the regulatory framework. The current revision makes it clear that energy-efficient buildings are no longer conceivable without smart control and regulation technology.
A key point is the requirement to install building automation and control systems (BACS) in non-residential buildings from a relatively low system capacity. This is complemented by new requirements regarding indoor air quality, transparency of energy consumption and the ability of buildings to interact flexibly with the energy system.
For operators and planners, this represents a paradigm shift. In future, HVAC systems must not only function properly, but also be measurably efficient, controllable and documentable. Building automation is thus evolving from an optional extra to a regulatory requirement.
Retrofitting takes centre stage
The key to improving energy efficiency lies not in new builds, but in existing buildings. As the majority of tomorrow’s buildings already exist today, retrofit solutions are becoming increasingly important. Modern building automation makes it possible to gradually upgrade existing HVAC systems without replacing them entirely.
Typical examples include replacing outdated automation stations, retrofitting additional sensors or integrating energy monitoring functions. Such measures can often be implemented whilst operations continue and offer an excellent return on investment.
This is precisely where the value of open systems becomes apparent. Standardised communication protocols make it possible to continue using existing technology whilst integrating new functions.
Open systems ensure future-proofing
As connectivity increases, so too does the importance of interoperability and IT security. Open standards such as BACnet – increasingly supplemented by secure communication mechanisms – enable cross-vendor integration and facilitate both retrofitting and system expansions.
For operators, this means long-term investment security; for system integrators, greater flexibility; and for planners, a more future-proof overall solution.
Conclusion: Building automation is becoming a strategic success factor
Building automation in 2026 is much more than just technical infrastructure. It is becoming a strategic tool for balancing energy efficiency, comfort, operating costs and regulatory requirements. AI, the EPBD and retrofitting reinforce one another and are setting new standards for the operation of HVAC systems.
Those who actively shape this change not only ensure legal certainty but also create measurable added value in day-to-day building operations.
If you’re interested in retrofitting, we’ve got a more in-depth blog post on the subject here.
