Regulations (EU) No. 1253/2014 and (EU) No. 1254/2014 require some ventilation equipment to be classified in energy efficiency classes. They range from A+ (best rating) to G and can be easily read off an energy label.
LUNOS guarantees compliance with all product declaration regulations. All products with heat recovery as well as those with a maximum power consumption of more than 30 watts belong to the ventilation units that are subject to the label.
The Silvento ec from LUNOS is so efficient that its maximum power consumption is 14.5 watts. It therefore does not fall under this requirement and must therefore expressly not be labelled.