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
Command and communication containers
Reliable cooling for communication systems, computers and other heat-generating electronics.
Equipment and electronics containers
Equipment and electronics containers
Stable operating temperatures for sensitive electrical, surveillance and control equipment.
Mobile workshops
Mobile workshops
Temperature control for containerised maintenance, repair and technical workspaces.
Special-purpose defence containers
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.
Offer request
Mika Sorri
Head of Electrification
+358 40 685 3657 mika.sorri@lumikko.fi Connect on LinkedIn Book a meeting