More than 100 years of Zehnder
Zehnder America Inc. provides high quality heating and ventilation solutions to promote comfortable, healthy, and energy-efficient indoor living. Zehnder America is a division of the Zehnder Group, headquartered in Switzerland. The Zehnder Group is represented worldwide and specializes in advanced heating, cooling, and ventilation technology.


Zehnder Group reported an increase in sales of 8% for the 2011 business year and ventilation accounted for 32% of sales. The group now has 3200 employees worldwide.


Zehnder America starts US Comfosystems division, bringing high-efficiency heat recovery to the US market.





Zehnder Group acquires Greenwood Air Management Ltd
Presence and knowledge of the ventilation market is further strengthened with Zehnder’s acquisition of leading UK ventilation company, Greenwood Air Management. Based on England’s south coast and dating back to 1879, Greenwood are known for their market leading and innovative products.


At the ISH trade fair in Frankfurt, Zehnder exhibited its range of products as a provider for heating, cooling and fresh air. The energy-efficient system innovations with design included the new air distribution system, Zehnder Onfloor, the towel radiator, Villeroy & Boch by Zehnder Planus, and the ceiling heating systems, ZBN.


With the product family Dualis, Zehnder is setting new standards in radiator design. The steel radiator with an aluminum front has a large proportion of pleasant radiant heat and is suitable for bathrooms and living areas. The innovation has been awarded the Design Plus.






Start of a collaboration with Villeroy & Boch: bathroom radiators matched by designers to the series from Villeroy & Boch will be marketed under the co-brand Villeroy & Boch by Zehnder.


Acquires J.E. Stork Air and enters the comfort ventilation market. Zehnder Comfosystems is developed out of this new channel. Comfosystems is one of the first integrated geothermal heating/cooling/heat recovery ventilation systems in the world. Zehnder America, Inc incorporated in the United States and starts US radiator division.




Zehnder celebrates 70 years of Zehnder Multicolumn. On this occasion, it gets the name of the times when it was created: Zehnder Charleston.


Hans-Peter Zehnder (4th generation) takes over the Chairmanship of the Group Management.


Going Public of Zehnder Holding AG. The new shares are listed on the market.







Zehnder develops a product design that also meets high aesthetic demands. The first design radiators are launched in the market – Zehnder Art Deco and Zehnder Sculptur.


Thanks to the merger of Zehnder and the radiator manufacturer Beutler in Lahr, the strong market position can be further consolidated.

The first towel radiator (Zehnder Universal) is launched in the market. For the first time, a dual-use radiator has been developed.


Owing to the high demand, a German subsidiary is formed in Riegel.



New markets are captured. Zehnder exports its tubular radiators to Germany.

Robert Zehnder invents the tubular radiator (Zehnder Charleston). In contrast to the cast radiators used in those times, the Zehnder tubular radiator was a lot lighter, had better heat conductivity, was much more cost-effective to manufacture and had a more attractive appearance.



The brothers Walter and Robert Zehnder developed and built a light motorcycle that was manufactured in large numbers for many years.

Jakob Zehnder sets up a workshop for bicycles, typewriters, sewing machines and washing machines in Gränichen in Switzerland.