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Reliable container cooling without compromising valuable interior space

Lumikko’s 5 kW Military Container Cooling Unit is designed for defence and special-purpose containers operating in demanding environmental conditions.

The outdoor unit can be installed in a recess in the container wall or integrated into a dedicated external equipment cabinet, depending on the container design and available installation space. Both installation options preserve valuable interior space. A separate ceiling-mounted evaporator distributes cooled air efficiently throughout the interior.

The system provides reliable temperature control for personnel, electronics and other mission-critical equipment in operating temperatures ranging from –40 °C to +49 °C.

Designed for protected container integration

Recess-mounted outdoor unit

The compact outdoor unit is designed to fit into a recess made in the front wall, with ballistic protection. This supports space-efficient installation and enables the cooling system to be incorporated into the container’s structural and ballistic protection concept.

Separate ceiling-mounted evaporator

The evaporator is installed inside the container, typically on the ceiling. This provides efficient air distribution without taking up valuable floor or working space.

Flexible system architecture

The outdoor unit and evaporator are connected with refrigerant piping, allowing the system layout to be adapted to the container structure, internal equipment and operational requirements.

Built for extreme operating conditions

Defence containers may be deployed in arctic cold, desert heat and rapidly changing environmental conditions. Stable internal temperatures are essential for protecting sensitive equipment and maintaining dependable operations.

The cooling unit is designed to operate in ambient temperatures from –40 °C to +49 °C, providing reliable cooling across a wide range of deployment environments.

Lumikko’s broader container HVAC offering is similarly positioned around dependable operation in demanding defence applications and global deployment conditions.


Tailored to mission-specific requirements

Every container application has different structural, electrical and operational requirements.

The cooling system can be adapted according to factors such as:

  • Installation location and available space
  • Container structure and internal layout
  • Air distribution requirements
  • Electrical interfaces
  • Refrigerant piping arrangement
  • Controls and user interface
  • Environmental and project-specific requirements

Higher cooling capacities are available for applications with greater thermal loads. The unit size is adapted accordingly to provide the required performance and reliable operation.

Our engineering team works together with the customer to ensure that the cooling system integrates smoothly into the complete container solution.


Technical information

Cooling Capacity 5 kW
Refrigerant R513a
Operating Voltage 400 VAC, 50 Hz
Ambient temperature range –40 °C to +49 °C
Control Thermostat
Outdoor unit dimensions 590 × 920 × 300 mm
System configuration Separate outdoor unit and ceiling-mounted evaporator

The unit can be recessed into the container’s front wall to minimise its external projection. If the available installation depth within the front-wall structure is at least 300 mm, a separate recess is not required.


Typical applications


Command and communication containers

Reliable cooling for communication systems, computers and other heat-generating electronics.


Equipment and electronics containers

Stable operating temperatures for sensitive electrical, surveillance and control equipment.


Mobile workshops

Temperature control for containerised maintenance, repair and technical workspaces.


Special-purpose defence containers

A tailored cooling solution for customer-specific mobile and transportable container applications.


Mission-ready thermal management experience

Lumikko has supplied thermal management solutions for demanding defence applications since 1985. Our systems are designed and manufactured in Finland and tailored to meet the requirements of each platform and operating environment.

Let’s design the right cooling system for your container

Tell us about your container, operating environment, cooling requirements and available installation space. We will design a cooling solution that fits your application.

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