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

To ask the Secretary of State for Business, Energy and Industrial Strategy, for what reason passive flue gas heat recovery systems technology is listed by the Building Research Establishment as under investigation.

A label has been applied to entries for certain Flue Gas Heat Recovery Systems in the Product Characteristics Database where the entries for those products have not been calculated in full accordance with the standard Buildings Research Establishment methodology and there is a risk that such entries might materially overestimate the energy savings associated with the product. The Department is commissioning a review of the methodology for Flue Gas Heat Recovery Systems. Pending the outcome of the review, we intend to change the label to state “The SAP FGHRS methodology is currently being reviewed. This entry may change.” This label is necessary to keep all users of the database appropriately informed as they may base important decisions on the database.