Must-Know Stulz Systems
We've put together a practical guide with all the Stulz air conditioners you need to know about.
With over 70 years of innovation, STULZ offers customized solutions. Their equipment optimizes energy consumption and ensures critical operations.
From compact units to modular systems, STULZ covers all needs. This guide outlines their main models for data centers. Discover how STULZ is transforming technology cooling.
CyberAir 3PRO CW
Chilled water cooling for maximum efficiency.
- At a glance: Precise control for large data centers. Available in 11 sizes. Direct Free Cooling saves up to 90%.
- Technical Data:
- Capacity: 20 kW – 1,080 kW
- Airflow: Upward/downward
- Efficiency: Pressure-independent valve
- For more information, visit: STULZ CyberAir 3PRO CW

CyberAir 3PRO DX
Direct cooling for cost-effective data centers.
- At a glance: Maximum capacity with minimal footprint. Indirect dynamic Free Cooling. Non-toxic R513A refrigerant.
- Technical Data:
- Capacity: Up to 100 kW
- Airflow: Upward/downward
- Refrigerant: R513A/R454C
- For more information, visit: STULZ CyberAir 3PRO DX

CyberAir Mini
Compact solution for small technical spaces.
- At a glance: Ideal for small rooms. Easy installation and maintenance. Precise temperature control.
- Technical Data:
- Capacity: 5 kW – 20 kW
- Airflow: Downward
- Dimensions: Compact
- For more information, visit: STULZ CyberAir Mini

CyberRack Active Rear Door
Cooling door for racks with no residual heat.
- At a glance: Turns racks into cooled units. Adaptable to any rack. Maximum energy efficiency.
- Technical Data:
- Capacity: 19 kW – 33 kW
- Dimensions: 42U/48U, 600/800 mm
- Control: C2020 with ModBus
- For more information, visit: STULZ CyberRack

CyberRow
Horizontal cooling for high-density racks.
- At a glance: Cools directly between racks. High flexibility and efficiency. Ideal for hot/cold aisle configurations.
- Technical Data:
- Capacity: 22 kW – 58 kW
- Airflow: Horizontal
- Dimensions: Compact between racks
- For more information, visit: STULZ CyberRow

CyberSlim
Efficient cooling for compact technical spaces.
- At a glance: Compact 3-ton design. Ideal for technical offices. Easy installation.
- Technical Data:
- Capacity: 3 tons
- Airflow: Downward
- Dimensions: Compact
- For more information, visit: STULZ CyberSlim

CyberWall
Modular cooling for large data centers.
- At a glance: Scalable solution for high-density environments. Maximum space efficiency. Advanced control.
- Technical Data:
- Capacity: Up to 200 kW
- Airflow: Upward/downward
- Dimensions: Modular
- For more information, visit: STULZ CyberWall

Micro DC
Modular data center with integrated cooling.
- At a glance: All-in-one solution for small environments. Efficient cooling. Easy scalability.
- Technical Data:
- Capacity: 2 kW – 10 kW
- Airflow: Integrated
- Dimensions: Compact container
- For more information, visit: STULZ Micro DC

ShelterAir FC
Robust cooling for technology shelters.
- At a glance: Built to withstand extreme environments. Integrated Free Cooling. High reliability.
- Technical Data:
- Capacity: Up to 50 kW
- Airflow: Upward
- Protection: IP54
- For more information, visit: STULZ ShelterAir FC

SplitAir
Split cooling for technical spaces.
- At a glance: Flexible installation for small rooms. High energy efficiency. Easy maintenance.
- Technical Data:
- Capacity: 5 kW – 20 kW
- Airflow: Downward
- Refrigerant: R410A
- For more information, visit: STULZ SplitAir

TelAir
Cooling for telecommunications stations.
- At a glance: Designed for telecommunications environments. High durability. Optional Free Cooling.
- Technical Data:
- Capacity: 5 kW – 30 kW
- Airflow: Upward
- Protection: IP55
- For more information, visit: STULZ TelAir

WallAir.
Wall-mounted cooling for compact spaces.
- At a glance: Wall-mounted for technical rooms. Compact and efficient. Easy installation.
- Technical Data:
- Capacity: 5 kW – 15 kW
- Airflow: Downward
- Dimensions: Compact
- For more information, visit: STULZ WallAir

AirBooster 2
Localized cooling for high-density racks.
- At a glance: Targets hot spots in racks. Compact and efficient design. Easy integration into data centers.
- Technical Data:
- Capacity: Up to 20 kW
- Airflow: 3,000 m³/h
- Dimensions: Compact for racks
- For more information, visit: STULZ AirBooster 2

Comparison Charts: STULZ Solutions by Application
Large Data Centers
Model | Capacity | Application | Key Advantage |
---|---|---|---|
CyberAir 3PRO CW | 20-1,080 kW | Data Centers | Free Cooling with 90% savings |
CyberAir 3PRO DX | Up to 100 kW | Data Centers | Eco-friendly refrigerant |
CyberWall | Up to 200 kW | High Density | Modular scalability |
High-Density Racks
Model | Capacity | Application | Key Advantage |
---|---|---|---|
CyberRack | 19-33 kW | Rack-specific | Cooling without residual heat |
CyberRow | 22-58 kW | Hot/Cold Aisles | Localized cooling |
AirBooster 2 | Up to 20 kW | Hot spots | Precise control |
Small Spaces
Model | Capacity | Application | Key Advantage |
---|---|---|---|
CyberAir Mini | 5-20 kW | Technical rooms | Compact and efficient |
CyberSlim | 3 tons | Technical offices | Easy installation |
SplitAir | 5-20 kW | Small rooms | Installation flexibility |
WallAir | 5-15 kW | Compact rooms | Wall-mounted |
Specialized Environments
Model | Capacity | Application | Key Advantage |
---|---|---|---|
Micro DC | 2-10 kW | Modular data centers | All-in-one |
ShelterAir FC | Up to 50 kW | Shelters | Extreme durability |
TelAir | 5-30 kW | Telecommunications | IP55 durability |
Why Choose STULZ?
STULZ redefines data center cooling through innovation. Their solutions combine precision, efficiency, and customization. From large data centers to shelters, STULZ delivers reliability. Free Cooling technology reduces operational costs. Their philosophy, “Climate. Customized.”, ensures unique adaptability. With a global presence and rigorous testing, STULZ leads the market. Choose STULZ for sustainable and dependable cooling.
Choosing STULZ means ensuring:
- Compliance with ASHRAE and TIA-942.
- Technical support with global experience.
- Solutions tailored to the actual operating environment.
With this guide, you have a clear view of the STULZ portfolio. If your data center demands continuous performance, this brand should be among your top choices.