The MUDIRO 12V 5KW is a liquid heater rated at 5 kW and powered by a 12 V supply. It transfers heat from fuel combustion to coolant circulating in a closed circuit. Depending on how it is connected, it can help preheat the engine and heat the vehicle cabin.
The MUDIRO 12V 5KW is a liquid heater rated at 5 kW and powered by a 12 V supply. It transfers heat from fuel combustion to coolant circulating in a closed circuit. Depending on how it is connected, it can help preheat the engine and heat the vehicle cabin.
How it works and what fuel it uses
The heater warms coolant that a pump circulates through a heat exchanger and the connected vehicle circuit. Fuel is burned in the heater; it does not circulate in the coolant circuit. Engine preheating can make cold starts easier, while cabin heating depends on how the heater is integrated into the vehicle’s system.
The original description lists diesel or gasoline as fuel. Before installation or refuelling, check which fuel is specified for the particular unit supplied. Diesel and gasoline are not automatically interchangeable, and listing both fuels does not by itself confirm that the same heater can use either one.
Operating modes and controls
The heater offers P1 and P2 modes for one-time heating, as well as an energy-saving automatic mode that switches on repeatedly as needed. It is controlled through an LCD panel or an RF remote with a stated range of up to 500 metres. Actual range can vary with conditions and obstacles.
The timer allows up to three daily start and stop times. For example, drivers with a regular morning departure can schedule heating before a journey rather than switch it on manually at the last minute.
Pump and heat transfer
The system includes a brushless water pump to circulate the coolant. Its brushless design reduces mechanical wear on pump motor parts and can contribute to quieter, more efficient operation.
Heat transfer also depends on a correctly connected and filled cooling circuit. During installation, use coolant suitable for the vehicle and follow the instructions for bleeding air from the system.
Where it can be used
The MUDIRO is intended for various vehicle types, including passenger cars, SUVs, caravans and trucks. A 12 V supply alone does not confirm compatibility: installation space, the cooling and fuel systems, and the way the heater connects to the vehicle also matter.
A preheated engine may place less strain on the starter during a cold start. However, the heater also draws power from the battery, so using it does not guarantee a lower load on the battery. Cabin heating can also help defrost the windscreen if the heater is suitably connected and warm air is directed onto the glass.
Safety and installation
The heater has overheat protection and voltage monitoring. These features help protect the unit and electrical system, but they cannot rule out faults or replace correct installation and maintenance.
A combustion heater produces exhaust gases, including dangerous carbon monoxide. The exhaust must be routed safely outside the cabin, and the heater must not be operated in an enclosed or poorly ventilated space. Have a qualified professional install the fuel line, exhaust, electrical supply and cooling circuit in accordance with the manufacturer’s instructions and applicable local regulations.