8% for the 2011 Business Year


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.


Comfosystems Launch


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

  greenwood air management

Greenwood Air Management Acquired


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.

Zehnder Exhibition


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.


Dualis Radiator Launch


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.

  Villeroy & Boch

Villeroy & Bock Collaboration


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.


J.E. Stork Air Acquisition


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.

70 years of Zehnder


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


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