The Department told us that it plans to identify faulty internal wall insulation through existing audit processes. First, TrustMark and the certification bodies continue to conduct business-as-usual audits. Second, households with concerns can contact their installer and certification body, or the ECO contact centre run by Ofgem, through which calls are triaged and audits arranged when necessary.35 We pressed the Department and Ofgem on how people will know if they have a problem with their insulation, as in some cases the defects may not yet have presented themselves as problems. Ofgem told us that concerns with internal insulation tend to manifest quickly.36 We also pressed all parties to confirm that they were encouraging people to be vigilant to defects and immediately report them. The Department confirmed that this was the case, and that both it and Ofgem had been working with their respective behavioural insights teams to ensure their communications were effective.37 The Department did not outline what would happen if this approach failed to find all homes with internal wall insulation defects, or how they could persuade more people to request audits. Protecting households from the cost of repairs