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EFEN Services

Technical Support

Whether by phone, e-mail: or contact form: Don’t hesitate to contact our experts of the technical hotline if you have any technical questions about safe energy supply.

Good to know

Technical specifications, dimensional drawings and product data are available around the clock in our product catalogue and from our download centre.


T +49 6123 7045 123

Catalogues to download

Product information to download

EFEN technische Hotline / EFEN technical hotline

Große Hub 10c
65344 Eltville

Technical hotline:
T +49 6123 7045 123

Sales hotline:
T +49 6123 7045 0
F +49 6123 7045 122