Wirthensohn becomes WSP Suisse

The name changes, everything else remains.


Dear Sir and Madam

Wirthensohn AG has been part of one of the leading international engineering and consulting companies since 2017: We are part of the global WSP Group, which has 45,000 employees at 500 locations in 40 countries.

Now we are strengthening our market presence. Our Board of Directors has decided to acquire the joint WSP brand and change the company name as of November 15, 2020.

New is our name :

WSP Suisse AG Ingenieure und Berater

With our new name we express our affiliation to the WSP group. It continues to stand for what distinguishes us: our customer-oriented, innovative and excellent services in the planning and consulting of building services engineering systems.

The name changes, everything else remains the same. The former Wirthensohn AG continues to be completely independent and true to its identity. This means: business purpose, corporate culture, team, address and your contact persons with telephone numbers remain unchanged.  Please note that only our e-mail addresses will change with the new name:

[email protected]

The previous e-mail addresses are redirected to the new ones so that all contact persons can still be reached. Nevertheless, we ask you to update your address data accordingly. You can find our company on the Internet from now on via the WSP Group's homepage at www.wsp.com/de-ch.

We are looking forward to our future together and successful cooperation with you. Please do not hesitate to contact us if you have any questions.