Zehnder Group acquired Hydro-Air Components and the brand conversion to Zehnder Rittling began, enhancing Zehnder’s range of radiators and ceiling-mounted heating and cooling systems.
Zehnder began exporting to Germany. In 1963 Zehnder opened a production facility near Freiburg, Germany and by 1970 it had overtaken the main plant in Gränichen in terms of both sales and workforce.
