In-Use / BIU 2015 / BIU 2015 Part 1 /

02 - Energy

Information correct as of 26thMay 2022. Please see kb.breeam.com for the latest compliance information.

Determining boiler efficiency - KBCN1223

The boiler efficiency should be based on the Higher Heating Value (HHV) or the Gross Calorific Value (GCV). Where the information related to the efficiency of the boiler is only available in Lower Heating Value (LHV) or Net Calorific Value (NCV), it will need to converted using the following formula: HHV = LHV x 0.9 GCV = NCV x 0.9
Information correct as of 26thMay 2022. Please see kb.breeam.com for the latest compliance information.