VVKB Diesel Hot Water System 12V 5KWBenefits of Vvkb Diesel Hot Water System Efficient Heating Anywhere, Anytime: The Vvkb diesel hot water system is connected to your vehicles cooling system. When the engine is running, it harnesses the heat generated by the engine and stores it in a hot water tank through a heat exchanger. When you need hot water and the tanks supply isnt sufficient, simply turn on the heater for a continuous supply of domestic hot water. Multipurpose Heating