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- Thermal protection and modernisation of existing buildings
- for the refurbishment so that the building owner can be sure that the stipulated optimal standard of t... trofits ==== At present, EnerPHit certification can be achieved if all energy related building compon... n of the investor. In general, stepwise retrofits can be sorted into two main categories such as \\ \\ ... and heating and RES concepts are implemented, as can be seen in Figure 2 below: [{{:picopen:stepwise