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The Clean Air Solutions Story

Unique technology, inspired engineering and Swedish roots

The start of our clean air jouney

Clean Air Solutions has been part of the Zehnder Group since 2007, but the story starts much earlier in Sweden with a man called Evert Krantz. This inspired engineer and businessman was so passionate about clean air that in his retirement, he invented an air filtering technology called the Flimmer filter.

Never one to stand still, Krantz, at the age of 83, decided to further pursue his passion by founding a company specialising in air cleaning technology, Freshman AB. This quickly grew into a thriving family business, laying the foundations for what is now known as Zehnder Clean Air Solutions.

Clean Air Solutions in numbers




Customers worldwide


Air cleaning units installed

1 billion+

Litres of air cleaned every hour


Dust measurements per year


Employees in the team

History of Clean Air Solutions

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