The Deutsche Energieberater-Netzwerk (DEN) e.V. has been in existence since 2002. Over 750 DEN energy consultants work and advise independently and economically neutrally. This means that their customers can be confident that they will receive the best possible renovation proposals for their project, regardless of the product. High quality (DEN QS) and the knowledge acquired through consistent further training create trust (DEN Academy). Good and collegial communication among themselves ensures that DEN energy consultants have a competent network.

Si is an independent trade media brand and has by far the highest circulation German-language trade magazine for decision-makers in SHK companies. Produced by our industry experts to a high journalistic standard, Si provides concise information on technology and corporate management as well as political and social conditions. We use all relevant media channels for this purpose.

In short: Si has a wide reach, is neutral and critical, creates market transparency and offers practical value for greater business success.

Installatie Totaal, a publication by Dero Uitgevers B.V., has been one of the most important sources of information for HVAC+E installers and consultants in the Netherlands for over 26 years. In a fresh and distinctive style, we present the latest trends and developments in the installation industry – clearly, practically and relevantly. Our topics range from plumbing and heating to refrigeration, air conditioning and ventilation to electrical and building technology.

Whether it's our magazine, website or newsletter, Installatie Totaal keeps you well informed.

NVKL is the Dutch association for companies in the refrigeration and air treatment sector. We are a representative trade and employers' organisation comprising more than 450 companies in the professional refrigeration and air conditioning sector. Companies from across the entire supply chain, including suppliers, installation companies, consultancy firms and educational institutions, are affiliated with NVKL.