Otago House



The staff of Atmos Engineering Ltd have a long association with Otago House, the big glass building on the corner of Princes Street and Moray Place, having maintained the building's heating, ventilation and air conditioning systems for over 20 years.


When the owners decided to build three additional floors of offices on to the top of the 10 storey building, we were pleased to be involved from the initial concept design stage through to final construction.


Much of the building's primary cooling and ventilation equipment was located on the original roof, and this had to be kept running whilst the additional floors were constructed over the top of it. This was an exercise in logistics for Atmos and main contractor Amalgamated Builders Ltd.


An existing service shaft carried chilled and heating water pipework and ventilation ductwork to all the occupied floors. These services had to be extended to the new ventilation units, air cooled chillers and gas boilers, located on the new roof three storeys above, whilst still allowing occupants in offices on the lower floors to continue working without disruption.


Despite being located in the busy commercial heart of Dunedin, with practically no external storage space at ground level, and restricted vehicle access for offloading, the project was completed within the original 1 year timeframe, much to the credit of the builders.


Following handover of the three new floors, Atmos were pleased to be awarded the contracts for mechanical services for the internal tenancy fit outs which included additional ventilation systems and computer room air conditioning systems.


Totaling $1.6 million overall, this was an interesting and challenging project for Atmos, on a high profile, landmark building in Dunedin and one with which we were proud to be associated.