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In addition to central air-conditioning plants with low-energy design, open and closed loop control systems play an important role in every air-conditioning and ventilation system to satisfy requirements pertaining to economic operation.


The constantly increasing demands made on a comfortable room climate, too, require controllable functional units.
System manufacturers can purchase two important components of their systems, i.e. central air-conditioning plants and control systems, from a single competent partner.

  We offer an integrated open and closed-loop control system. This control system is aligned to the requirements of each functional unit. This ensures optimum operation of every single module. Interface- or coordination-related problems are thus practically excluded.


An air-conditioning plant equipped with an AL-KO control system offers very specific benefits:
Simple purchasing process, since only one system supplier
Aligned technology

Modular system

Less on-site installation efforts due to pre-assembly.



The AL-KO program contains controls for exhausters with hot-water and electrical heating, cold-water and compressor refrigeration, heat-recovery systems and monitoring and control functions (filter monitoring, valve control). Thanks to the modular system with individual control modules, a large number of options are available. The system can thus be easily aligned to the respective terms of reference.



Control of supplied-air temperature

Control of room or exhaust-air temperature
Minimization of fresh-air intake

Maximization of fresh-air intake

Control of air-mixing valve
Control of air-
mixing valve/ winter-sequence control
Control of shutoff valve
Pressure control
Adjustment of volume flow
Cascade control




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Our General Terms of Supply contain important information for you.