A Brief History of Precision Air Conditioning


STULZ and the road from computer room cooling to modern Data Center air conditioning: The history of precision air conditioning technology begins in the early 1970s with the air conditioning of countless computer rooms that are springing up. With the transition to the modern Data Center, the exceptionally diverse landscape of precision air conditioning solutions that we know and trust today gradually came into being – a process in which STULZ repeatedly took a pioneering role. The most important milestone was the CyberAir 1, which was the world’s first precision air conditioning system to be fitted with EC fans as standard.

In The Beginning: Precision Air Conditioning For Computer Rooms

When we introduced our first air conditioning system onto the market in 1965, precision air conditioning technology as we know it today was as yet inconceivable. The first STULZ system was also a comfort air conditioning system, which cooled rooms while also providing (unwanted) dehumidification. However, this system was not designed to air condition IT rooms. And it must be said that basically, there was as yet no market for solutions of this kind in the mid-1960s. This only happened when IBM launched its System/370 mainframe computer in 1970. Despite its high purchase price of $ 4.6 million, it evolved to become the most successful mainframe of its day, and revolutionized the use of IT. For the first time, computer centers were created on a large scale, although they were not yet known as Data Centers. One exception was the Deutsche Rechenzentrum in Darmstadt, founded in 1961 and which, even then, employed the German word for “Data Center” in its title…