Our specialties



Pool water systems




One step closer to the future

We are your partner who knows the requirements of complex building services engineering and implements modern ideas with performance, experience and know-how. Our actions are oriented towards a responsible future, which is characterised by a sustainable and respectful handling of existing resources. We guarantee our customers balanced cost efficiency and smooth operation. Our individual locations have many years of experience in their respective specialty. With the Kannewischer Group, we want to share, pass on and expand this knowledge. In this way, we not only give our employees new challenges, but are also available for our customers everywhere on site.

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Hasenkox Ingenieurgesellschaft mbH

Location Düsseldorf

Our work is based on a 50-year company history, which guarantees a successful future with the integration into the Kannewischer Group. Together we represent an important partner for complex building technology, realising demanding projects at home and abroad.

Core competences:

  • Technical building services with a focus on healthcare
  • Expert for sanitary and heating engineering

Kannewischer Schweiz

Locations Cham | Bern | Wattwil | Yverdon-les-Bains

Since 1972, we have equipped more than 400 pool projects, numerous school buildings, laboratory buildings and industrial buildings with the latest heating, ventilation, air conditioning, sanitary and/or pool water systems. Quality, resource efficiency, sustainability and cost-effectiveness are our top priorities.

Core competences

  • Technical building equipment with a focus on energy and pool water systems
  • Technical building equipment with focus on sanitary engineering

TBP Köln GmbH

Location Köln

In the past years, our office has accompanied numerous renovation measures of church heating systems. In most cases, we take over the complete planning, tendering and construction supervision. Our company wants to be a competent contact partner for all clients in all matters of technical building equipment.

Core competences

  • Technische Gebäudeausrüstung
  • Ausstellung von Energieausweisen für Nichtwohngebäuden


The Kannewischer Group, headquartered in Cham (Switzerland), has 9 locations in Europe. The group of companies represents a team of around 80 employees.



HK&T Kannewischer, Hasenkox Ingenieurgesellschaft mbH and TBP Köln GmbH – a team with many years of experience and an impressive portfolio of references.