Select brand

Select brand:

A brand of Bouygues Energies & Services
Kummler+Matter EVT

Heating, Ventilation, air conditioning and sanitation technology

Warmth and water are basic human needs, which, thanks to our competence, we deliver in high quality to wherever people live or work. We are not only strong in the areas of heating and sanitation.


Renewable energy, energy savings, CO2 reduction, heating system upgrades – these are just a few of the latest keywords when it comes to scarce resources, fluctuating raw material prices and uncertainty around the world. What will still be available tomorrow, which technologies can be used and what is the best solution for what I need?

Learn More
Ventilation systems

Balanced climatic conditions in the workplace ensure a good climate. And increase quality, performance and productivity. We plan and install practical ventilation technology solutions for service enterprises, institutions, laboratories and industry.

Learn More

We plan, design and implement practical air-conditioning systems for the well-being of people and the good of the environment.

Learn More
Ventilation cleaning & hygiene

Our services cover all areas of ventilation cleaning, hygiene inspections, maintenance and care.

Learn More

Our sanitation specialists and piping installers plan and install simple sanitation fittings and systems with the same care and professionalism as they do when working on the public infrastructures entrusted to them.

Learn More
Clean rooms

We specialise in clean-room systems for the pharmaceutical, electronics and food industries, hospitals, plastic manufacturers and research laboratories. Our experts have extensive know-how in a broad range of manufacturing and finishing processes.

Learn More