This M&E project at the John Lewis branch in Edinburgh intended to mitigate the cold air infiltration that was being experienced locally around the Mall entrances at levels 1, 2 & 3 and Leith Street.

In the winter months when the external ambient temperatures were low, the internal conditions within the branch were below levels that were deemed acceptable for staff and customers. The branch was experiencing excessive cold air infiltration rates due to a wind tunnel effect through the mall. This coupled with the large mall openings into the branch all resulted in poor conditions on cold days. The existing heating systems serving these areas were not designed for these unusual loads and therefore mitigation measures were planned to resolve these issues at source.

The resolution measures were two-fold with iAirDoors being installed at all four entrances and Frenger electric radiant heating panels being installed at high level. The works interfaced with the existing heating and electrical systems, meaning that any downtime of these systems had to be kept to the absolute minimum to prevent any disruption to the operation of the branch.The iAirdoors have drastically reduced the cold air ingress and the radiant heaters have provided ‘spot’ heating for occupants.

Electrical Installation:
Small power
Telecom and data services
Fire alarm and fire suppression systems
Building Management Systems

Mechanical Installation:
Ventilation systems
LPHW Systems
Hot and Cold water services