Customer service

Grünwelt customer portal

Update data, retrieve documents, submit meter readings

We have collected and answered common questions from our customers for you.

Please write to us and we will get back to you promptly.

Customer service:

Orders & moves hotline

Our service hours: Monday-Friday 8 am-6 pm

Fax number:

0800 55 55 774

Send us your requested documents by fax.

Callback service:

We will call you back when it suits you best.

By post:

Heating electricity customer support

Grünwelt Wärmestrom GmbH, Customer Service, P.O. Box 900113, 39133 Magdeburg