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About us

Your HVAC experts for heating, ventilation and sanitation in Berlin

New thinking for Berlin, the future and the world

For us, craftsmanship means responsibility and creative power at the same time. With what we do every day as HVAC experts in and for Berlin, we can and want to shape the future thus making it more liveable for everyone. It is important to us not to look at the relevant topics separately, but to link them well together.

  • Sustainable and sensible use of resources
  • Openness to technology and digital expertise
  • Real participation and shared responsibility
  • Unparalleled customer relationship
  • Modern employer and management culture

This is how crafts really make sense

Our success is based on three clear, interlocking principles:

1. New thinking as a continuous requirement creates valuable new perspectives and solution ideas for every task.

2. In acting, we combine valuable skills: listening and advice. Reliability and flexibility. Innovative strength and experience. Efficient digitization and personal service...

3. We always keep an eye on people. And the question of how we can effectively improve their life, their work and also their future.

We combine craftsmanship, attitude and digitization for noticeably more customer enthusiasm!

Marcel Winkler,
Head of Digital & Strategy bei HGZ
Saving resources, rethought

Can we Reduce our
footprint, even
though we're growing?

Energy & resources are valuable. That is why we handle both with care. And do our part for a more livable future for future generations.

In the end, it's not about our work.Just about what it does to people!

Strong Service:
We think of everything
so you don’t have to!

As an HGZ customer, you will quickly notice that we are not only HVAC specialists, but also absolute service experts who make every project as easy and safe as possible for you.


Early, late or just about any time?
We'll come when it suits you.

Offer in 5
working days

So that you can make
quick and good decisions


Paperless access to all
information and documents


We listen and only
recommend what fits


By phone, email, website,
WhatsApp or social media


We think and
take care of everything

How do we work?

Erfahrungen Bewertungen zu HGZ Gebäudetechnik Berlin

In this case, we don't just mean our craftsmanship. Because HGZ is one of the best SHK craft businesses in all of Germany and has received multiple awards. When it comes to customer reviews, we are also proud to regularly receive top marks for our work. You can find out more about our work and our awards in our blog.

Let's talk:
Your contacts
at HGZ


Daniel Zeuschner

Head of Project
Deine Mail an Daniel

Dirk Zeuschner

Founder und CEO
Deine Mail an Dirk

Nele Zeuschner

Head of HR und Controlling
Deine Mail an Nele

Julian Steinberg

Head of Service
Deine Mail an Julian

Annelie Jenning

Operations und Customer Service
Deine Mail an Annelie

Ulrike Steinberg

Operations und Customer Service
Deine Mail an Ulrike

Marcel Winkler

Head of Digital und Strategy
Deine Mail an Marcel

Kerstin Reimann

Finance und Accounting
Deine Mail an Kerstin

Brand partners
you can rely on.

We set the highest standards of quality, sustainability and reliability not only for ourselves, but also for our partners and suppliers.


As a leading provider of heating, ventilation and air-conditioning technology, the German family-owned company stands for innovative and energy-efficient system solutions. With all products, Vaillant places great value on comfort, usability and sustainability in order to create a greener future.


As a top expert for faucets, showers and sanitary systems, Grohe has always shaped the industry with high design standards, top technology and innovative sustainability. The products combine functionality, durability and aesthetics perfectly and make using water a real experience.


Viessmann is one of the leading manufacturers of heating and cooling systems. With the aim of making living spaces sustainable for the future, the family-owned company focuses on innovative solutions and the highest quality standards and is thus actively driving the energy revolution forward.


Since 1874, the Swiss company has stood for innovative, aesthetic and high-quality sanitary products such as faucets, cisterns, installation systems and ceramics and has always been committed to intelligent bathroom solutions and efficient use of resources.


Bosch Thermotechnology stands for high-quality heating products and hot water solutions. With pioneering technology and a clear focus on sustainability, innovation and convenience, the company makes a significant contribution to environmentally friendly heating and water supply.

Villeroy & Boch

Since 1748, Villeroy & Boch has stood for fine porcelain and high-quality ceramic products in the sanitary sector. As a synonym for quality, the brand not only combines tradition with innovation, but also sets unique style accents worldwide with its passion for design and perfection.


Buderus (Bosch Group) for absolute quality and reliability in the area of heating and heating technology. With a wide range of products from efficient heating systems to intelligent control solutions, the company is clearly focused on sustainability, innovation and customer proximity.


The family-owned company specializes in drinking and heating water treatment and offers tailor-made solutions for private single-family homes as well as complex major projects. Magnetic products guarantee top quality standards and are 80% “made in Germany”.


As an expert in water treatment, Grünbeck stands for quality and innovation in the area of clean water. Whether for household, industrial or commercial use — the brand promises the highest standards and durability and is committed to ensuring that every drop of water is optimally treated and protected.


Hansgrohe stands for high-quality bathroom & kitchen fittings and sanitary systems, made in Germany. With innovative technologies and award-winning designs, Hansgrohe regularly sets new standards in terms of sustainable use of resources and user experiences.


Samsung is one of the top manufacturers in Europe when it comes to air-conditioning technology and produces first-class and energy-efficient air conditioning systems for private and business applications. Samsung combines environmental sustainability with ease of use to improve the quality of life.


AXOR produces iconic objects for luxurious bathrooms and kitchens. In collaboration with world-renowned designers (including Philippe Starck and Antonio Citterio) — AXOR offers products in a wide range of styles. All faucets, showers and accessories meet the highest quality standards without exception.


The Danish company VOLA is famous for its designer fittings and combines minimalism, functionality and traditional craftsmanship with modern technology. The products stand for sustainable quality and elegance and set standards in timeless, Scandinavian design.


BWT is a declared market leader in water treatment whose mission is to deliver the best water quality for everyone. BWT not only improves water through purification, but also through mineral enrichment, thus making a lasting contribution to health and well-being.

Ambition, rethought

Is courage to new
Perhaps the best future model?

Every person and every project deserves their own design for the future. That is why building technology is always for us bespoke — both large and small.

Lüftungstechnik, neu gedacht

Wer kümmert sich darum,
dass uns nicht die
Berliner Luft ausgeht?

Wir sind von Haus aus allergisch gegen unnötig schlechtes Wohn- oder Betriebsklima. Und beweisen mit moderner Gebäudetechnik gern, dass da noch reichlich gute Luft nach oben ist.

Got Any more questions?
We've got All the answers.

If you want to learn more about HGZ, here are some frequently asked questions and answers. Of course, you can also contact us personally at any time.

Unsere Preise für Serviceeinsätze findest du auf der Seite Preise. Die Kosten für eine Heizungswartung kannst du ganz einfach auf unserer Seite Heizungswartung berechnen lassen. Projektumfang und Anforderungen. Gerne erstel

Wir legen großen Wert auf ökologische Nachhaltigkeit und bieten innovative Lösungen im Bereich Erneuerbare Energien an.

Ja, wir bieten umfassende Wartungs- und Reparaturdienste an. Erfahre hier mehr zu unseren Services für Privatkunden sowie für regionale Hausverwaltungen.

Wir sind seit 1996 in Berlin tätig und bringen jahrelange Erfahrung im SHK-Handwerk mit.

Seit der Änderung des GEG ist diese Frage nicht mehr so einfach pauschal zu beantworten. In der Regel dürfen sie aber ab dem 31.12.2023 in Bestandsgebäuden nicht mehr ohne weitere Auflagen installiert werden. Es gibt jedoch Übergangs- und Ausnahmeregeln.

Ab dem 01.01.2024 gibt es zudem eine Aufklärungspflicht beispielsweise durch einen Energieberater oder Fachhandwerker.Generell sind jedoch folgende EE-Anteile durch grüne Brennstoffe zu berücksichtigen:

- 15 Prozent ab 2029
- 30 Prozent ab 2035
- 60 Prozent ab 2040

Ab dem 01.01.2045 fordert das Gesetz sogar komplette Klimaneutralität, also den Einsatz von 100 Prozent erneuerbarer Energien.Welche Lösung für dich in Frage kommt klären unsere Heizungs-Experten gerne in einem persönlichen Gespräch mit dir.

Read more about us in
OUR blog

Our new website is live

Our digital figurehead provides plenty of information and service functions for customers and applicants.

Wir wurden mit dem German Customer Award ausgezeichnet

Die German Customer Awards prämieren jährlich Deutschlands beste Unternehmen im Bereich der Kundenzufriedenheit. Preisträger setzen Qualitätsstandards und heben sich durch besondere Leistungen und Innovationen im Kundenservice hervor.