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Climate-controlled cabinets

Climate-controlled cabinets for IT environments

Product series

Precise Climate Control for Sensitive Equipment

Climate control cabinets are ideal for use in sensitive IT and technical areas. Unlike traditional comfort air conditioners, they ensure precise control of temperature and humidity, high air circulation, and reliable 24/7 continuous operation.

Whether in an IT or server room, a data center, or a UPS or battery room - specialized climate-controlled cabinet systems are used wherever thermal stability and operational reliability are critical.

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Requirements for Climate-Controlled Cabinets in IT Environments

Requirements

More Than Just Cooling Capacity

In IT environments, cooling capacity alone is not enough. Stable and precisely controlled operating conditions are crucial.

Modern climate-controlled cabinets must:

• Ensure constant temperature control
• Precisely control humidity
• Provide high-sensitivity cooling capacity
• Ensure even air distribution
• Be designed for 24/7 continuous operation
• Be able to be flexibly integrated into existing infrastructures

Redundancy strategies and monitoring functions are also essential, especially in business-critical applications.

Direct-evaporation climate cabinets with split-system outdoor units

Direct evaporation

An Efficient Solution for Small to Medium-Sized IT Rooms

These systems operate on the direct evaporation principle: The air-conditioning unit is located directly in the room to be cooled and transfers the generated heat via a refrigerant to an inverter-controlled outdoor unit. This allows for precise and energy-efficient control of temperature and humidity.

In addition to cooling, these systems offer a wide range of control functions, such as the ability to cascade multiple units, various control algorithms for temperature or fan control, and flexible adaptation to the specific IT load. Conventional comfort split systems reach their limits here, while specialized direct-evaporation server cabinets provide the necessary precision.

A modern office and research building with a multi-story facade of glass and light-colored panels against a blue sky; in the foreground, a large white company sign displaying the logos of DFKI and the Rhineland-Palatinate Energy Agency, as well as the address “Trippstadter Straße 122.”Reference: German Research Center for Artificial Intelligence (DFKI)

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Photo of several s-MEXT direct-evaporation climate cabinets at DFKI

Direct-evaporation climate cabinets with split-system outdoor units

Typical applications:

• Small to medium-sized server rooms
• UPS and battery rooms
• Utility rooms without a central cooling system
• IT rooms with limited space

Benefits at a Glance:

• High energy efficiency thanks to inverter technology
• Precise temperature and dehumidification control
• SHR values up to 92%
• Flexible airflow
• Customizable
• Reliable 24/7 continuous operation, even under high heat loads

s-MEXT-G00 DX S 006 - D 044

s-MEXT-G00 DX S 006 - D 044

6,8 - 42,3 kW

Direct-evaporation air-conditioning cabinets with integrated compressor

Integrated Systems

Scalable solution for larger IT installations

In this system category, the speed-controlled compressor is integrated directly into the air-handling unit. This enables a wider performance range, high modulation capability, and enhanced operational reliability. At the same time, the integrated design simplifies installation and scaling.

These systems can be combined with external condensers or dry coolers. In addition, variants are available with an integrated water-cooled condenser, a free-cooling heat exchanger, or as a dual-fluid system, in which a chilled water circuit can be integrated in addition to direct evaporation.

The flexible airflow configuration (upflow, downflow, front discharge) and a wide range of options allow for project-specific customization—even for complex data center structures.

A data center with long rows of illuminated server racks and digital network visualization in blue light.

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Product image of the x-MEXT climate cabinet with an external condenser

Direct-evaporation air-conditioning cabinets with integrated compressor

Typical applications:

• Enterprise data centers
• Larger server and IT spaces
• Applications with increased availability requirements
• Scalable IT infrastructures

Benefits at a Glance:

• Variable compressor technology with high energy efficiency
• Flexible airflow
• Optional free cooling
• Wide range of configuration options
• Rapid deployment and high scalability

x-MEXT-f-G02-DX-DF 035 - 098

x-MEXT-f-G02-DX-DF 035 - 098

36,2 - 101 kW
x-MEXT-i-G02-DX 029 - 140

x-MEXT-i-G02-DX 029 - 140

29 - 140 kW
x-MEXT-i-G02-DW-FC 029 - 108

x-MEXT-i-G02-DW-FC 029 - 108

30,5 - 113 kW
x-MEXT-i-G02-DW 029 - 140

x-MEXT-i-G02-DW 029 - 140

30,5 - 146 kW
x-MEXT-i-G02-DX-DF 029 - 108

x-MEXT-i-G02-DX-DF 029 - 108

36,2 - 109 kW
x-MEXT-f-G02-DW-FC 035 - 098

x-MEXT-f-G02-DW-FC 035 - 098

37,6 - 105 kW
x-MEXT-i-G02-DW-DF 029 - 108

x-MEXT-i-G02-DW-DF 029 - 108

36,2 - 109 kW
x-MEXT-f-G02-DW 035 - 136

x-MEXT-f-G02-DW 035 - 136

36,6 - 145 kW
x-MEXT-f-G02-DW-DF 035 - 098

x-MEXT-f-G02-DW-DF 035 - 098

36,2 - 101 kW
x-MEXT-f-G02-DX 035 - 136

x-MEXT-f-G02-DX 035 - 136

34,6 - 137 kW
MEGR-TF 014 - 176

MEGR-TF 014 - 176

10,8 - 176 kW
MEGR-MC 013 - 164

MEGR-MC 013 - 164

8,3 - 155 kW
MEDR-TF 014 - 165

MEDR-TF 014 - 165

0 - 108 kW

Cold-Water Climate Cabinets

Cold water

The ideal complement to a centralized cooling system

Chilled-water air-handling units serve as the interface between central refrigeration systems and precise room air conditioning. They use chilled water as a heat transfer medium, thereby enabling high cooling capacity with optimal load distribution and energy efficiency.

Cold-water solutions offer advantages in terms of scalability, efficiency, and system integration, particularly in medium- to large-scale data centers. The modular design allows for different airflow configurations (upflow/downflow) and flexible adaptation to existing or new data center layouts.

Modern EC fans, precision control valves, and intelligent control systems ensure stable temperature and humidity conditions. Advanced monitoring functions enable integration into higher-level building management or DCIM systems. Operating data, alarm notifications, and trend analyses support transparent and reliable continuous operation.

Photo of the Saint-Denis Pleyel train stationReference: Saint-Denis Pleyel Train Station

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Photo of a w-MEXT climate cabinet against a white background

Cold-Water Climate Cabinets

Typical applications:

• Enterprise, colocation, and hyperscale data centers
• Server, UPS, and battery rooms
• IT facilities with a centralized chilled-water infrastructure
• Applications with high performance requirements

Benefits at a Glance:

• High energy efficiency thanks to centralized cooling
• modular design
• flexible airflow
• Precise control of temperature and humidity
• High operational reliability and ease of maintenance

w-MEXT DL 006 - 026

w-MEXT DL 006 - 026

4,7 - 10,8 kW
w-MEXT DF 009 - 016

w-MEXT DF 009 - 016

7,9 - 15,4 kW
w-MEXT 006 - 026

w-MEXT 006 - 026

5,9 - 34,2 kW
w-MEXT-XL 150 - 300

w-MEXT-XL 150 - 300

193 - 336 kW

Precision Climate Chambers

Cold water

Constant environmental conditions for sensitive applications

Precision climate chambers ensure stable temperature and humidity conditions in sensitive laboratory, measurement, and testing environments. They are used wherever constant environmental conditions are essential for reproducible results, reliable processes, and the protection of sensitive materials or equipment.

Precise control of cooling, heating, and humidification capacity allows temperature and relative humidity to be maintained within tight tolerances of defined setpoints. The room climate remains stable even under low or fluctuating loads—an important factor for quality assurance, calibration, and long-term testing.

Flexible airflow options and efficient components—such as speed-controlled compressors and EC fans—enable these units to be integrated into various room designs as needed. As a result, precision climate cabinets are well-suited for demanding applications in laboratories, archives, museums, weather stations, and sensitive industrial environments.

A modern laboratory equipped with several analytical instruments on stainless steel workbenches, connected by exhaust pipes and computers running along a white wall.Reference: Analytica Alimentaria Laboratory

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Product photo: i-MTR G02

Precision Climate Chambers

Typical applications:

• Laboratory spaces with high requirements for temperature and humidity stability
• Testing and calibration rooms
• Stability testing for sensitive products, such as pharmaceuticals and cosmetics
or food
• Archives and museums with sensitive exhibits or materials
• Weather stations and precisely monitored environments
• Applications with low or highly fluctuating heat loads

Benefits at a glance:

• Constant room temperature with an accuracy of ± 0.3 °C
• Constant relative humidity with an accuracy of ± 2% RH
• Stepless power control from 0 to 100%
• Stable control even with low or no load draw
• Precise humidity control through steam humidification
• Ensures reproducible test conditions and reliable measurement results

i-MTR2-G02-M0 012 - 018

i-MTR2-G02-M0 012 - 018

Planning & Integration

Planning
Two people are standing in a brightly lit room in front of a plain, light-colored wall, looking together at a large, narrow document or panel that one of them is holding. Both are facing each other and wearing casual clothing; the light is coming from the left, casting a distinct shadow on the wall in the background.

Technical design for maximum operational reliability

Proper planning is crucial for stable and energy-efficient operation.

The following factors are taken into account:

• Actual heat loads
• Sensible and latent cooling components
• Airflow and flow conditions
• Redundancy requirements
• Monitoring and Interface Concepts

Modern control technology, EC fans, and optimized airflow can help reduce operating costs in the long term.

Personalized consulting for your project

Our experts will guide you from the initial load assessment through to the project-specific configuration.

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FAQ on Climate-Controlled Cabinets for IT Environments

FAQ
When are direct-evaporation climate cabinets with split-system outdoor units used?

These systems are particularly well-suited for small to medium-sized IT rooms without a central cooling supply. The climate control cabinet is located inside the room, while an external unit dissipates the heat. They enable precise temperature control and dehumidification in 24/7 operation.

When is it a good idea to use a climate-controlled cabinet with a built-in compressor?

Systems with integrated, speed-controlled compressors are suitable for larger or particularly demanding applications. They offer an extended performance range, good scalability, and can be combined with external condensers or dry coolers.

When are cold-water climate cabinets used?

Cold-water climate-controlled cabinets are ideal when a central cooling system is available. They use chilled water as a heat transfer medium and are particularly well-suited for medium- to large-scale IT installations with high performance requirements.

What does an SHR value of up to 92% mean?

SHR (Sensible Heat Ratio) describes the proportion of sensible cooling capacity relative to total cooling capacity. A high SHR value is important in IT environments, since the majority of the heat that needs to be dissipated there is sensible heat.

How are temperature and humidity controlled?

Climate-controlled cabinets feature built-in sensors and control algorithms for precise regulation of temperature and humidity. Dehumidification is achieved via the cooling coil, while the control system continuously adjusts to the thermal load.

What is a dual-fluid system?

A dual-fluid system combines a direct evaporation circuit with an additional chilled water circuit. This allows the cooling system to be flexibly adapted to different infrastructure or redundancy requirements.

How does free cooling work?

When outdoor temperatures are suitable, an additional heat exchanger can be used to reduce the amount of mechanical cooling required. This helps lower energy consumption. Learn more about free cooling.

What airflow patterns are possible?

Depending on the model, various air distribution options are available, such as air intake and outlet at the top, bottom, or front. The selection is made on a project-by-project basis, for example, in combination with a raised floor.

How is integration with building management or DCIM systems carried out?

Climate control cabinets can be integrated into higher-level GLT, BMS, or DCIM systems. This allows for centralized monitoring of operating data, alarm messages, and trend analyses.

How is the required cooling capacity determined?

The design is based on the actual heat loads, IT power consumption, room geometry, and the desired redundancy requirements.

How is operational safety ensured?

A modular design, project-specific redundancy concepts, and monitoring and alarm functions support stable, continuous 24/7 operation.

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