This project will replace the primary and secondary air handling units and will require navigating the complexity of a historic building with potential asbestos risks. This will include all associated plant and equipment within the confines of the air handling unit plant rooms such as, chilled water pipework, low temperature hot water pipework, building management main control panels and field devices, plant room ductwork distribution systems, ductwork ancillaries such as attenuators, fire dampers, volume control dampers, and all associated building work.

The existing ventilation system in our listed Threadneedle Street building comprises of two primary main supply air handling units and twelve secondary air handling units, which ventilate the occupied office areas via a series of services tunnels and shafts. This plant and equipment was installed in 1987 and has now reached the end of its economic lifecycle and requires replacement.

This project will replace the primary and secondary air handling units and will require navigating the complexity of a historic building with potential asbestos risks. This will include all associated plant and equipment within the confines of the air handling unit plant rooms such as, chilled water pipework, low temperature hot water pipework, building management main control panels and field devices, plant room ductwork distribution systems, ductwork ancillaries such as attenuators, fire dampers, volume control dampers, and all associated building work.