IT specialist Holger Sedlak used to have good job at German semiconductor manufacturer Infineon where he developed over 80 patents. These days he would rather sell cooling systems, a change of tack which all began with an oil furnace.
Twelve years ago, Mr. Sedlak had a modern oil-fired heating system installed in his house in a Munich suburb. Much to his frustration, the new model was hardly any more efficient than his old furnace. There has to be a better way, thought Mr. Sedlak, and began to tinker around with ideas.