Which companies can issue a specialist certificate?

A professional certificate can usually be issued by the company that carried out the energy efficiency measure. The prerequisite is that it operates in an approved trade according to the Energetic Renovation Measures Ordinance (ESanMV).

This includes companies from the following sectors:

• Roofing, carpentry, joinery,
• Painting, plastering, and thermal, cold, and sound insulation work,
• Window, glass, metal construction, and sun protection work,
• Heating, ventilation, sanitary, and electrical work,
• Masonry, concrete, and other work on the building envelope.

Alternatively, the certificate can also be issued by a person authorised under § 88 GEG, such as a duly authorised energy consultant or energy efficiency expert.