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--- planning:refurbishment_with_passive_house_components:practical_implementations_of_step_by_step_retrofit_to_enerphit_standard [2016/03/10 17:39] – kdreimane
+++ planning:refurbishment_with_passive_house_components:practical_implementations_of_step_by_step_retrofit_to_enerphit_standard [2016/03/10 17:43] – [Practical implementations of step by-step-retrofit to EnerPHit standard] kdreimane
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 **4. Management of a step-by-step retrofit**
 \\ Keys for success in a step-by-step approach consist of: organising an overall refurbishment plan with the owner, defining acceptable intermediate states, and proving cost-efficiency.
-Overall refurbishment plan.
-After an audit of the initial building status, the maintenance plan (if any) can be upgraded to an overall refurbishment plan that integrates EnerPHit quality measures when components end their service life. A visual summary of such a plan for the multifamily dwelling of Courcelles is presented in Figure 4. Infiltrations and drafts have been reported next to windows which were scheduled to be replaced in the maintenance plan for 2015. This would be a good opportunity to install passive house windows, in anticipation of the future external wall insulation. Extensive work is scheduled on the ventilation system, while replacing heaters is postponed to coincide with domestic hot water renewal in 2018.
-**4.1 Acceptable intermediate states.**
+**4.1 Overall refurbishment plan**
+\\ After an audit of the initial building status, the maintenance plan (if any) can be upgraded to an overall refurbishment plan that integrates EnerPHit quality measures when components end their service life. A visual summary of such a plan for the multifamily dwelling of Courcelles is presented in Figure 4. Infiltrations and drafts have been reported next to windows which were scheduled to be replaced in the maintenance plan for 2015. This would be a good opportunity to install passive house windows, in anticipation of the future external wall insulation. Extensive work is scheduled on the ventilation system, while replacing heaters is postponed to coincide with domestic hot water renewal in 2018.
+**4.2 Acceptable intermediate states.**
 \\ Designers and owners are not used to retrofitting a component and anticipating the future upgrade of their neighbour. Intermediate states have to be clearly described in tender documents and clearly identified on designer sketches (Figure 5, Right).[{{ :picopen:global_cost_enerphit.png?500|Figure 5: Left:  Global cost of EnerPHit step-by-step retrofit compared to standard efficiency maintenance (Auby, France). Right: Window installation and external insulation, showing both intermediate state and final state (Courcelles, France)}}]
-**4.2 Prove cost-efficiency.**
+**4.3 Prove cost-efficiency.**
 \\ The “Comparison” Worksheet of PHPP9 helps designers in assessing the cost-efficiency of each measure. A single measure may not appear to be cost-effective when compared with the initial measure in the maintenance plan. For example: window replacement with passive house windows instead of classic PVC double-glazed windows, as passive house windows are still expensive (350-600€/m² delivered in France). However, it can be seen from the EuroPHit case studies so far, that it is still worth going for the EnerPHit efficiency standard as the annual global cost of EnerPHit is not higher than a standard maintenance with minimal efficiency (Figure 5, Left).
 The EuroPHit project is co-funded by the European Commission under the grant agreement IEE/12/070/SI2.645928.
 \\
+\\
 **5. References**
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 | [Sevela, Pfluger 2014] | Energy refurbishment of heritage buildings with PHPP’s and real measurements’ feedback, 18th International Passive House Conference, Aachen, 2014 |
 | [Schulz 2008] |Verglaste Balkone – eine Option für die Altbaumodernisierung?, Protokollband Nr. 37. Passivhaus Institut, Darmstadt, 2008 |