How are the classes established?
For establishing an energy class various criteria are taken into account: wall thickness, type of masonry, roof type, subsoil condition, condition of the heating system columns, performance of the heating or ventilation system. All this information is obtained through on-site investigation by the approved auditor, from the specific documents or, in their absence, from the information from the owner or through specific measures.
Class energy A requires a consumption of less than 125 kWh / m2 / year, energy consumed to ensure optimal conditions – temperature, lighting, hot water. In contrast, energy class G involves a consumption of over 820 kWh / m2 / year.
Most buildings in Romania fit at this moment in grades C or D. Not even most of the new buildings fall within class A, unless they have been specifically designed and constructed for that purpose. Ideally, at this point, is to bring a building in class B or C and urgent measures should be taken for buildings in classes E, F or G.
However, by means of specific measures, the energy performance of a building can be improved substantially. This fact reduces costs, especially in seasons with extreme temperatures and achieves a high comfort. Because, isn’t it true, we really don’t want to wear gloves and a scarf in front of the TV in the middle of winter or with an ice bag in our arms in the middle of summer!