PAS 2035 is a specification for what is called ‘whole-house’ or ‘whole building’ retrofit. This is an approach to the installation of energy efficiency measures (EEMs) which takes into account the requirement of the entire building, both from a technical standpoint and considering factors like occupancy comfort.
PAS 2035 is concerned with assessing domestic dwellings for energy retrofit. This involves identifying areas where improvements can be made and specifying and designing the relevant improvement measures. It is also concerned with the monitoring of domestic retrofit projects.
PAS 2035 is to be used in conjunction with PAS 2030: 2019, which sets out the standards required for installing EEMs.