Cooling while the vehicle stops, extra power while in movement
When a vehicle stops, the main engine-powered air conditioning system is not always available. Lumikko parking and auxiliary air conditioning helps keep the crew compartment cooler in parked mode by using the vehicle battery system. While driving, the same unit can support the existing HVAC system and add cooling capacity in hot conditions.
Key benefits
- Cooling with the engine switched off: the unit uses the vehicle battery system, so the crew compartment is not fully dependent on the main HVAC system in parked mode.
- Additional capacity while driving: supports the existing air conditioning system when heat load, ambient conditions or mission profile demand more cooling.
- Operational readiness for crew and equipment: helps manage interior temperature and the operating conditions of heat-sensitive systems.
- Flexible installation: suitable for rear superstructure or other vehicle-specific integration locations when serviceability, protection and airflow are considered in design.
- Project-specific sizing: cooling capacity, controls, ducting and electrical interface can be adapted to the vehicle use case.
Suitable applications
Tactical 4x4 vehicles and other lighter defence platforms
Crew, command, communications and sensor-system vehicles
Vehicles that spend extended periods stationary in hot conditions
Platforms where the existing HVAC system needs parallel capacity during peak loads
Technical information
| Product type | Parking/auxiliary air conditioning unit for military and special vehicles |
| Operating voltage | 24/28 VDC |
| Power source | Vehicle battery system |
| Cooling capacity | up to 5 kW, sized according to the application |
| Operating modes | Parking cooling and auxiliary cooling while driving |
| Installation | Roof, rear or other vehicle-specific integration location |
| Controls and integration | Configured per delivery for the vehicle electrical and control architecture |
Sizing and test results
The operating point is selected based on whether the priority is battery runtime, crew comfort or maximum cooling. The table below is a page-ready technical summary of the measured test results.
| Operating point | Total current | Cooling capacity |
| Economy mode (30%) | 47…65 A | 1.3…1.9 kW |
| Normal mode (40%) | 54…77 A | 1.7…2.5 kW |
| Hot environment (60%) | 67…102 A | 2.6…3.8 kW |
| Maximum output (100%) | 126…153 A | 4.5…5 kW |
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 vehicle
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