Throughout recent times, there has been a considerable degree of criticism with regard to the Nationwide House Energy Ratings Scheme (NatHERS).

Speaking particularly of its use in the multi-residential sector, for example, intelligent passive design advocate Darren O’Dea said the system had come a long way but suffered from disjointed management, potential to be ‘gamed,’ oversimplified treatment of windows or glazing systems and a lack of communication with the market at…