In Germany, installer companies take a special place in the value chain. They are a middleman between vendors and the end-customer. If someone wants to install a new heating system, he or she consults an installer company first before making the buying decision. Thus, for end-consumers, the installer companies must stay independent and uncompromised. Today, most installer companies have 3 to 10 employees and are family-owned. However, also installer companies face pressure to change. New players are entering the market, trying to build platforms pushing the small companies out of the market. Installers are forced to get more efficient to survive, and we want to enable them to do this by digitizing their processes.