Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Business, Energy and Industrial Strategy, pursuant to his Answer of 15 July 2019 to Question 274430 and with reference to paragraph two of the Building Research Establishment (BRE) document FGHRS Data Processing Changes Relating to Canetis GasSaver GS2 Data Record held in Products Characteristics Database, dated October 2018, if he will require the BRE to publish the method used to assess that technology.

This paragraph refers to a pre-processing (averaging) method that has been used by the Buildings Research Establishment (BRE) where raw test data cannot be entered directly into its methodology for assessing Flue Gas Heat Recovery Systems (FGHRS). BRE intends to publish a document that describes the averaging method shortly.

The methodology used by BRE for assessing FGHRS for the Product Characteristics Database is published already at the following URL: https://www.ncm-pcdb.org.uk/sap/filelibrary/pdf/calculation_methodology/SAP_2009/FGHRS_calculation_method_28_10_10.pdf.