Object reports and specialist articles for architects, planners and window manufacturers

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  • © Tom Arban

    We make buildings breathe

State-of-the-art technology for smoke extraction and natural ventilation

Intelligent solutions for fresh air

As an independent family-owned company, we have been future-oriented in our work all along. D+H has developed continuously from an innovative smoke extraction product provider to a comprehensive system provider for smoke extraction solutions and a comfortable building atmosphere. This evolution is also taking place in the digital realm.


As a result, we remain amongst the world leaders in the areas of innovative ability and innovative speed. Our objective is to always be the first point of contact for our customers, helping them to meet the challenges they face with our unmatched expertise. We reach this goal through consistently market-oriented, customer-oriented and service-oriented action. 

  • SHEV Smoke and Heat Ventilation

    Saving lives and protecting property by reducing heat and smoke levels.

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  • MSE Mechanical Smoke and Heat Extraction

    Controlled smoke extraction supported by fans for larger spaces.

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  • CNV Controlled Natural Ventilation

    Bringing fresh air into buildings for health and comfort.

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  • Lift Shaft Smoke Extraction

    Saving energy costs and increasing safety in lift shafts.

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  • Avantra residence in Sydney, Australia | © Skymonkey

    Bus communication

    Intelligent communication network for complex ans small projects. 

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  • Skylight systems

    Skylight systems for smoke extraction and ventilation solutions. 

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  • © KKM Kozień Architekci

    NSHEV Natural Smoke and Heat Exhaust Ventilators

    Certified and quality tested smoke and heat exhaust ventilators. 

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Products for smoke extraction and natural ventilation

More than just components: D+H technology at its best 

  • A world map in different shades of blue

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    Together with our 10 subsidiaries and sales and service partners worldwide, we will continue to inspire confidence with innovative solutions that provide a safe, healthy and comfortable atmosphere in buildings. We call it: Building Atmosphere. We are well organized beyond Europe's borders and take our net-worked know-how precisely to your object.

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We make buildings breathe

For more than 50 years we bring fresh air into buildings, providing safety and comfort. Our product portfolio offers solutions for the most exceptional customers requirements.