200 Berkshire is a multi-let office building located in Reading. KJ Tait were instructed to complete an EPC Assessment of the building and establish a pathway to obtain an EPC ‘B’ before June 2022 when the new Part L 2021 came into force.

The building’s heating and cooling systems were recently replaced with new gas boilers and chiller, therefore replacing the HVAC system was considered impractical. Through our calculations using the new Part L 2021 carbon factors, we established that by not replacing the gas boiler, the EPC rating would drop from the current ‘C’ rated EPC to a ‘D’ rated EPC if assessed after June 2022.

We instigated a pathway to ‘B’ under Part L 2013 by recommending replacement of lighting on those floors served by fluorescent lights with new LEDs, and the installation of a 270m2 PV array over each wing of the building. This enabled the building to achieve a ‘B’ rated EPC immediately. The replacement of the gas boiler with a decarbonised system could then be considered over the intervening 10 years.