CyberAir 3 CW

Progress for energy efficient closed-circuit air conditioning

CyberAir 3 CW is the result of consistent further development of our thoroughly successful CyberAir 2 series. With our CyberAir 3 CW units, STULZ is introducing a new series of units offering maximum potential savings. The units control the climate in the data center with the precision, reliability and energy efficiency.

The CyberAir 3 CW units are optimized for energy efficiency, low fan power consumption and "modern" high air and water temperatures. The six sizes vary in width from 950 to 3,350 mm. 

Solutions for the CyberAir 3 CW

  • Room cooling

  • Medium-sized and large Data Centers

  • High-density

  • Direct Free Cooling

  • Indirect Free Cooling

  • Equipment rooms

  • For use in the IT sector, medicine/hospitals



  • Leads the field in efficient air conduction

  • Leads the field in cooling capacity with maximum efficiency

  • Increases cooling capacity per footprint

  • Optimized heat exchangers for high air and water temperatures to extend Free Cooling times. Can be quickly adapted to all required air and water temperatures

  • Designed for continuous, no-downtime operation over many years

  • Cools precisely, quietly and exceptionally economically

Indirect Dynamic Free Cooling 

STULZ Indirect Dynamic Free Cooling achieves up to 60 % more savings.

Direct Free Cooling

The CyberAir 3 CW precision air conditioning system with Direct Free Cooling air conditions Data Centers up to 90 % more economically than conventional compressor cooling systems.

Direct Free Cooling

  • Norbert Wenk, Product Manager

    "Energy efficiency and reliability are the chief requirements for all Data Center operators. The CyberAir 3 CW has been developed to satisfy both these requirements."

Optimized heat exchangers

  • Redesigned and improved cooling unit geometry
  • Reduction in water and air-side pressure drops
  • Introduction of a third heat exchanger for maximum flexibility

EC fan with 630 mm diameter

  • Reduced power consumption and noise
  • Nominal airflow rate at a fan speed optimized for partial load 
  • Increased airflow in each size

We offer individual system solutions that are specially tailored to your project requirements. Choose your system.


Flexibility thanks to variable air conduction 

The CyberAir 3 CW is available in upflow, downflow, raised floor and high versions.



  • Upflow

  • Downflow

  • Raised floor

  • High floor



  • EC fans: Quiet running, long life, maintenance-free

  • Filter control manager

  • All parts requiring maintenance can be accessed from the front

  • Compact dimensions

  • Optimized filter and heat exchanger surfaces

  • Optimized air and water-side pressure drops

  • CW standby manager including shutdown of units if a defined heat load is exceeded

  • Filter class G4

  • 2-way control valve as standard

  • Refrigeration systems for upflow, downflow, raised floor and high floor operation, six sizes, standard and low-energy versions


Control and monitoring

  • C7000 controller for controlling and monitoring the air conditioning system
  • High level of redundancy and availability thanks to autonomous controllers in every air conditioning module
  • Sequencing with standby functions
  • Control of up to 32 air conditioning modules per data bus system
  • UPS operation with configurable components for low unit power consumption
  • Recording of room climate
  • Service interface
  • Modbus protocol preinstalled
STULZ Services

For this product we recommend the following STULZ services

To top