Question to the Department for Energy Security & Net Zero:

To ask His Majesty's Government whether the new energy performance certificates methodology will take into account higher-rated water heaters and infrared heating.

Technologies for which we have already obtained sufficient evidence – including heat batteries for water heating – will be supported at launch of HEM: EPC. Other technologies will be added over time via the new innovative product recognition process.

Government is working with manufacturers to ensure that infrared systems can be represented fully and accurately. To enable this, further work is required from industry to develop a robust, validated test method for measuring their operative temperature.