Company
Innovation, high-performance solutions and the highest quality are our strongest motivators. Because precision is our passion.
Your contact person
Get to know the team
Administration
Thomas Lichter
Administrative Manager
Operations Manager
Andreas Welther
Technical Operations Manager
Sales
Mona Douale
Sales assistance & French speaking customers
Ventilation ducts
David Rohleder
Ventilation duct construction Scheduling
Special part construction
David Rohleder
Special parts construction Scheduling
a career with us
Start with us in your dream job
Our motto: The perfect workflow from design to production in our high-tech machinery.
We combine not only the best quality and reliability, but also an innovative and dynamic corporate culture. You too can become part of our well-coordinated team.
our history
The company history
1999
Foundation by Hermann Hennen
Hermann Hennen, a graduate engineer, founds BLH GmbH with an initial staff of 23 to serve the local ventilation technology market.
2016
Change of management Oliver Hennen
Hermann Hennen retires and Oliver Hennen takes over the management. At the same time, the SIG Air Handling Group becomes a shareholder in the company.
2020
Extension of the new hall
In order to meet the strong demand for individual special constructions, a new production hall with 2000 m² is built. Here, well-trained employees can work on high-quality products on modern CNC machines and welding workstations.
2005
Expansion and move to the Pfalzel site
With almost 50 employees in the meantime, the space in the rented hall soon becomes too tight. With the new building on the greenfield site, the workflow can be improved and space created for future expansions.
2019
20th anniversary
With now more than 90 employees and Europe-wide activity, BLH has positioned itself as one of the leading suppliers of metal ventilation products on the market.
2020
Airvance Group
The Europe-wide Airvance Group with 1650 employees takes over the SIG Air Handling Group and thus also BLH GmbH. This allows BLH to benefit from group structures while continuing to respond to local customer needs.
1999
Foundation by Herrmann Hennen
Hermann Hennen, a graduate engineer, founds BLH GmbH with an initial staff of 23 to serve the local ventilation technology market.
2005
Expansion and move to Pfalzel site
With now more than 90 employees and Europe-wide activity, BLH has positioned itself as one of the leading suppliers of metal ventilation products on the market.
2016
Change of management Oliver Hennen
With almost 50 employees in the meantime, the space in the rented hall soon became too tight. The new building on the greenfield site improved the production flow and created space for future expansions.
2019
20th anniversary
In order to meet the strong demand for individual special constructions, a new production hall with 2000 m² is built. Here, well-trained employees can work on high-quality products on modern CNC machines and welding workstations.
2020
New hall extension
Hermann Hennen retires and Oliver Hennen takes over the management. At the same time, the SIG Air Handling Group becomes a shareholder in the company.
2020
Airvance Group
The Europe-wide Airvance Group with 1650 employees takes over the SIG Air Handling Group and thus also BLH GmbH. This allows BLH to benefit from group structures while continuing to respond to local customer needs.
1999
Foundation by Herrmann Hennen
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2016
Change of management Oliver Hennen
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2020
New hall extension
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2005
Expansion and move to Pfalzel site
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2019
20th anniversary
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2020
Airvance Group
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we are part of the
The Europe-wide Airvance Group with 1650 employees takes over the SIG Air Handling Group and thus also BLH GmbH. This allows BLH to benefit from group structures while continuing to respond to local customer needs.
corporate values
This is what we stand for as a company.
Reliability
You can rely on us - because we keep our promises. In doing so, we focus our actions on sustainable, cooperative partnerships.
Quality
We focus on unique quality in the production of our innovative solutions. Likewise, we invest in a qualitative future thanks to our instructive trainings.
Responsibility
We take responsibility for our employees and our environment. Therefore, we act sustainably in the sense of a resource-rich future.
