A container mobile housing system denominated ZETHa (zero energy temporary habitation) is acclimatized by water circulation inside the external walls of the building. A general design of the building has presented and constructive solutions are presented to minimize thermal bridges. Energy dispersions calculations have been performed both for the wall and the whole building. Energetic contribution by renewable energy plants has evaluated to get the condition of passive building. This evaluation will also consider appliances needs. Wellness conditions have evaluated with satisfactory results.