CyberAir 3PRO CW

Progress for energy efficient closed-circuit air conditioning

CyberAir 3PRO CW is the result of consistent further development of our thoroughly successful CyberAir 3 series. With our CyberAir 3PRO 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 utmost precision, reliability and energy efficiency.

The CyberAir 3PRO 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 3PRO 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 3PRO 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 3PRO 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 3PRO 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 F5

  • 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 20 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

CyberAir "Best of 2015"

In 2015, the STULZ CyberAir received the IT INNOVATION AWARD. The panel of experts from the Medium-sized Enterprises Initiative named the CyberAir the BEST OF 2015 in the "Green IT" category. 



  • STULZ CyberAir 3PRO CW Flyer

    CyberAir 3PRO CW

    • File: STULZ_CyberAir_3PRO_CW_Flyer_0615_en_print.pdf

    • Type: Adobe PDF

    • Size: 2,65 MB

    • Language: English

    • Date: 2015-06-01

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