Our Service

Info for the duration of the Corona Pandemic

Please refrain from visiting us personally at the moment. We are happy to be at your service by telephone on +49 7033 30945 0 and repairs can be sent to us by post. Again, please contact our service team in advance by telephone or e-mail: +49 7033 30945 250, service(at)

Also our field service does not make any visits at the moment. Projects with customers and suppliers are discussed on the phone.

Trade fairs, congresses and training courses are not taking place. If you are interested in our new products, you will still find current information in our newsletter and on the website.


Sohlengrund 16
75395 Ostelsheim

Phone +49 (0) 70 33 / 30 945-0
Fax: +49 (0) 70 33 / 30 945-20


Office hours

Monday to Thursday 07:30 am-12:15 pm and 12:45 pm - 04:30 pm
Friday: 07:30 am - 02:00 pm

Goods acceptance times

Monday to Thursday 08:30 am -12:00 pm and 01:00 pm - 04:00 pm
Friday: 08:30 am - 12:00 pm

Customer service

You can comfortably use our contact form. For technical queries and complaints, please fill out the product fields in the form. This means that we will already have all the relevant data should we need to contact you. Of course, you can also reach us by e-mail or telephone via our head office.

In certain regions, you can get in direct touch with our skilled local distributors.


You can order from our online shop, as well as by email, fax or post. Use the order templates on the right.

Customisation of products

To order ventilation units with special colours or special dimensions, please use the ventilation template. In this way, we can forward your wishes directly to production and simplify the process.