What can we
do for you?

Are you a private customer, business customer, applicant, or supplier? Please let us know in which capacity you are contacting us so that we can provide you with personalized and tailored support.

Tell us whether you are new to us or have been placing your trust in us for some time. This will enable us to respond directly to your wishes—individually and without complications.

Whether it's modernization, repair, maintenance, or something else—select your request and we'll take care of your needs. Fast, reliable, personal.

New partnership or already familiar with HGZ? Select your status and we will ensure smooth processes—professionally and cooperatively.

Tell us whether you are a planner, administrator, or public client. This will enable us to respond specifically to your requirements—individually, solution-oriented, and innovatively.

Whether you are interested in a new collaboration, project, maintenance, or have any questions, please let us know your requirements and the relevant trade. We will take care of everything else quickly and individually. HGZ: Your partner for modern building technology.

Want to join us in shaping the future? Discover our current job vacancies and find your place at HGZ—whether it's a permanent position, internship, or apprenticeship. We look forward to hearing from you and receiving your application!

PS: If your desired position is not listed, you can also send us a speculative application via the link below.

As a tenant, please contact your property management company first. They usually have their own partner companies and will commission them accordingly.

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If we are a partner company of your property management company in the field of HVAC, we ask you to also report your request/damage to your property management company first. They will then send us an order. As soon as we receive this order, we will contact you.

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If you are a tenant and would like to cover the costs of our services yourself, please select “Private customer” in the previous step.

Enter your contact details so that we can get in touch with you quickly and personally. Your information is safe with us – and the next step is already taken!