The aim of this guide is to offer the reader a guideline for the methodology to be followed in case of considering to address a retrofitting project of a commercial building. The main drivers for a retrofitting actuation are usually the cost saving and improvement of the building status, among the solutions, the energy efficiency improvement, reduction in energy demand and emission of the building are the main areas. However, the comfort level which is determined by an air quality and thermal comfort conditions is another key aspect to be considered in a holistic retrofitting solution. Therefore, a user considering a possible retrofitting of a commercial building must assess not only the potential energy savings, the corresponding costs savings and aesthetical aspects, but also the improvements in terms of air quality and thermal comfort, making it a holistic retrofitting action.
This guide is structured in consecutive steps for the retrofitting assessment, definition and deployment:
1. Project Setup and Pre-retrofit Survey
2. Energy Auditing and Performance Assessment
3. Identification of Retrofit Options
4. Site Implementation and Testing
5. Validation and Verification
This document will guide the user in the different processes and decisions as the assessment of the retrofitting needs, the evaluation of the different retrofitting actuation possibilities, the economic and energetic analysis of each actuation and the decision making of the suitable retrofitting level according to the economic conditions.