PTSB, St Stephen’s Green — Commercial Energy Retrofit
Pinebridge was engaged to modernise the heating, cooling and ventilation infrastructure at PTSB’s landmark St Stephen’s Green office in Dublin city centre. The project replaced ageing, energy-intensive building services across seven floors of the T-Block & Georgian Block with a high-efficiency, low-carbon system — a key step in the bank’s wider decarbonisation and building-performance strategy.
The Challenge
The existing chilled-water and low-pressure hot-water systems had reached the end of their serviceable life and were costly and inefficient to run. The works had to be delivered within a live, fully occupied corporate headquarters in a constrained city-centre location, with no disruption to day-to-day banking operations. Added complexity came from upgrading the building’s medium-voltage electrical supply, managing the risk of asbestos within legacy ventilation ductwork, and coordinating plant access and craneage on a tight urban site.
The Solution
Working closely with the design team, Pinebridge managed the full lifecycle from M&E survey and 3D modelling through to installation and commissioning. The legacy chilled-water and hot-water services were stripped out and replaced with a modern, energy-efficient refrigerant-based air-conditioning system serving all seven floors, supported by new ductwork, ventilation and toilet-extract systems.
The electrical infrastructure was upgraded with a new plant-room MCC panel, dedicated supply cabling and full containment, while a structured programme of ceiling and builders works allowed installation to progress floor-by-floor around occupied workspaces.
The Outcome
The result is a contemporary, energy-efficient climate-control system that significantly reduces the building’s reliance on legacy plant and supports PTSB’s pathway to a lower-carbon, higher-performing headquarters. Underpinned by detailed cost estimating, competitive tendering and value-engineering discipline, the project demonstrates Pinebridge’s capability to deliver complex M&E energy retrofits within live commercial environments — on a clear, controlled and transparent commercial footing.
SEAI Grant Management
End-to-end management of SEAI grant funding, from eligibility assessment and application through to claim, integrated with the project programme to maximise available support.
