I have built a mobile heating box with an 8kW China Diesel parking heater that can reliably heat animal houses, garden sheds, campers and tents. The heater box had to be compact, weatherproof and mobile, but at the same time offer enough space for the diesel heater, fuel tank and accessories. In this article, I describe how I planned the heating box, installed the diesel heater and finally put the box into operation, and share my building instructions and my experiences as well as practical solutions.