An overview of our services for business customers

Are you a business customer?
That's what we can do for you:

Plant
engineering
From complex heating stations in residential buildings to sanitary systems in commercial properties and HVAC systems in hospitals – HGZ is your reliable partner!

Pipeline
construction
Planning and construction of complex drinking water, wastewater, heating, fire suppression and gas pipelines – we know our way around.

Renewable energy
Let's build the future of building technology together. Whether new construction or modernization – we have the right sustainable solution.

Maintenance
& service
Efficient and trouble-free technical systems are especially important for the professional operation of buildings. With competent service and precise maintenance, everything runs as it should.

Planners &
developers
From tailored solution-finding to perfect execution – with over 25 years of experience and forward thinking, we are your top HVAC partner for your project.

Public
clients
Public construction projects have their own requirements. Our top references across Berlin show that we know exactly what matters.

Property
management
Maintenance, repair or modernization? As a long-standing HVAC expert, we reliably support property managers.
Especially on major projects, our experience pays off sustainably for our clients.
Any questions?
We have the answers.
If you want to learn more about our HVAC services for business customers in Berlin, you can find some frequently asked questions and answers here. Of course, you can also contact us personally at any time.
Do you have references or case studies from previous projects?
Yes, we have a wide range of successfully completed projects. We'd be happy to show you some of our references.
How do you differentiate yourselves from the competition?
Our focus is on individual solutions, appreciative treatment and needs-orientation. We also value clear communication and a positive mindset.
What type of projects do you specialise in?
We specialise in the new build & modernisation of HVAC systems in public & commercial buildings, as well as consultation through to commissioning of HVAC systems for single- and multi-family homes.







