In my search for an efficient and self-sufficient heating solution for my garden shed, I decided to build a mobile heating box with a diesel parking heater. My aim was to create a compact, weatherproof and flexible heating box that not only reliably heats my animal house, but can also be used in the camper, motorhome or for other projects. With the 8kW diesel parking heater, I was able to implement a powerful yet economical solution that provides constant heat even at temperatures of -10°C. In this article, I describe how I planned, built and installed the heating box and share my practical experience from the first tests