16.01.2026 - Ad hoc announcement pursuant to Art. 53 LR
Zehnder Group increases sales in a challenging market environment. Ventilation sales exceed EUR 500 million for the first time.
  • Zehnder Group sales rose by 8% to EUR 760.7 million in 2025. The sales growth was driven by further market development in the ventilation segment
  • Sales in the ventilation segment increased significantly by 18% to EUR 501.7 million, accounting for 66% of total sales. The Siber acquisition contributed to ventilation sales growth with 5%
  • Sales in the radiator segment decreased by 8% to EUR 259.0 million due to reduced renovation activity
12.11.2025
Zehnder Group Capital Markets Day Promising future prospects for Zehnder's ventilation business
  • Accelerated transformation of the Zehnder Group from a traditional radiator company to an innovative, globally active system provider for ventilation and indoor climate
  • The effects of climate change, increasing air pollution, rising energy costs, and legal requirements are driving demand for economically attractive, energy-efficient, and reliable system solutions
  • Focus on expanding market leadership in Europe and geographical expansion in North America through value-generating acquisitions, expanding the service business on the growing base of installed equipment, and intensifying cooperation with the installation industry in Europe and expanding sales in the USA
  • Expanding the range of innovative products for the renovation and multi-family housing market is intended to accelerate future growth and broaden its base, making it less dependent on the construction cycle, together with the growing service business
  • High-end radiators are part of the integrated indoor climate business, but the share of the above-average profitable ventilation business in total sales, currently at 66 percent, will continue to rise
25.07.2025 - Ad hoc announcement pursuant to Art. 53 LR
Significant increase in sales and higher operating result in the first half of the year due to the growing ventilation segment
  • Group sales rose by 11% to EUR 382.8 million in the first half of 2025
  • Strong sales increase in the ventilation segment of 24% (organically +15%1) to EUR 254.1 million; ventilation sales rose to 66% (previous year: 59%) of total sales
  • Operating result (EBIT) was EUR 32.7 million (+45%); EBIT margin of 8.5%; no one-off effects in the first half of 2025
  • Net profit increased by 229% to EUR 23.5 million
  • Cash flow from operating activities grew by 60% to EUR 22.9 million
  • Guidance for the 2025 financial year: sales of between EUR 740 and EUR 770 million and an adjusted EBIT margin approximately on the level of the first six months
25.07.2025
Six-month Report 2025

We are delighted to announce the publication of our Six-month Report 2025.

08.07.2025
Zehnder Group and Airthings end talks on potential transaction
16.06.2025
Zehnder Group intends to acquire Airthings' business segment for indoor air quality monitoring
  • Signing of a letter of intent to sell Airthings' business segment assets to Zehnder
  • Targeted strengthening of Zehnder's growing Clean Air Solutions service division with innovative solutions for indoor air quality monitoring
  • Asset Purchase Agreement planned, pending customary due diligence

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