Lochinvar, based in Lebanon, Tennessee, is an industry leader in the U.S. for condensing boilers and water heaters. The specialists were looking for a solution to increasing demand for progressively more powerful and yet compact condensing boilers. The problem: Since the boilers are also installed in retrofitting scenarios, they must fit through doors and narrow passages. The second problem: The solution needed to be found quickly, as a prototype was to be showcased at the ISH in Frankfurt which was three months later. This was just the right challenge for ebm-papst, who has been a close engineering partner to Lochinvar for years.